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brake lights dont work when headlights are on jeep

brake lights dont work when headlights are on jeep

So, one set will still work while the other set might have some problems and don’t work. I was also thinking that it may be due to the humidity/wetness. However the dash, tail and parking lights still do not come on. The brake light (passenger side) went out. Any thoughts? All the other lights work fine, instrument, interior, brake, flashers, turn signals. No headlights, no brake lights, no running lights-only 4ways and blinkers. VIEW MORE. We replaced the brake switch, still no lights. Jeep Patriot. sprinkles08. If you’re testing the brake lights with the headlights on but the engine not running (and obviously the alternator isn’t charging), the brake lights may not work. That would explain why they work with the headlights off and the battery voltage is closer to 12v. If the headlights are on, the tail lights work, directionals work, but the brake lights don’t work. Again, if the headlights are off, brake lights work fine. Diploma. The vehicle hasn't been modded so the wiring is original and in the original location, and I've been looking at that but can't find anything obvious like broke wire, broke connector, etc. I have a problem on my 2004 Jeep Grand Cherokee. I've replaced bulbs, fuses, and even the housings. Yes, I typed 24 when I meant 23 on the original post regarding the fuse. Could the problems be related? If the headlights are on, the tail lights work, directionals work, but the brake lights don’t work. If the turn signals or hazards are on and then the headlights are turned on, the lights stop blinking. What kind of wiring problem would cause something like this? Maybe we will try to find a switch and go from there. When lights come on my left turn signal stays on and left signal blinks fast. Hey everyone how's it going. When the headlights were turned off, the voltage went to zero. If the flashers work, check for blown fuses as a few vehicles use separate circuits for the lower and third brake lights. When brake pedal … read more. I had this same problem years ago with a '72 Fiat. Use a circuit tester such as # 40376 to test the vehicle side trailer connector while someone steps on the brakes in the tow vehicle. The trouble is most likely due to a bad chassis ground which will cause a voltage drop across the car chassis due to the high current draw of the headlights. If headlights are off, brake lights work fine. Thanks. VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Thanks! Advanced Search Cancel Login / Join. Hey everyone how's it going. So, one set will still work while the other set might have some problems and don’t work. The socket fails with moisture enters – this may also cause rusting. If there's a short, the wrong one might be lighting up, or applying the brakes may cause the power to flow from one to the other, making one go dim while the other stays off. turning my headlights on will make my brake lights in the rear not work. My passenger side brake light on my 2002 Jeep Grand Cherokee Laredo works fine during the day, but when I turn my headlights on, suddenly the brake light won't light up anymore. Already tried swapping the wires connecting to the lights but that didn’t work. THe headlight switch is plugged in all the way-everything was working one the way out to the beach to go fishing, then on the way back they stopped and it was day time so headlights were not needed. Anyone have any advice on how to fix this problem? I have checked fuses (fine) bulbs are good. Joined: Aug 2, 2017 Member: … But the passenger side brake light still doesn't work. Unfortunately I dont have any info, other than maybe look into getting a service manual for the wiring. When I turn the parking/headlights on, the lower brake light are on. How Do Headlights Work? Brake lights work fine when headlights off. This burnt-out bulb does not affect the circuitry of the light system and it continues to function normally. I've had this vehicle for about a month, and the CarFAX showed no accident. When the headlights are on, I don’t hear the click–just silence. Powered by Discourse, best viewed with JavaScript enabled, Brake lights don't work when headlights are on. However, the issue is that when I turn the light switch to the first position, the right and left (not the 3rd center light) brake lights turn on as well as the running lights. The clearance lights and turn signals do work. the flashers also work. Discussion Starter • #1 • Jan 27, 2016. Hi guys I have a 2006 commander Hemi. The socket which holds the bulb may have failed. Truck: 1987 2.5l, AX4 2WD. Ask a Car … However, my running lights work just fine. So the average car owner can troubleshoot these faults with the use of a test light and, sometimes, a digital multimeter (DMM). High beam headlights don’t work or low beams don’t work. we checked the bulbs, they are ok. all other lights work, hazzard, turn signals, night, just no brake lights. Patriot Headlight Not Working / or contact this number 09276429291 / (032) 5127262 If the headlights are on, the tail lights work, directionals work, but the brake lights don’t work. The rear and headlights have separate connections. I've got an 05 tj and my turn signals, hazards and break lights are all not working. Post Reply. I think it’s in the multi function switch inside the steering column. The circuit board is sealed inside the tail lamp assembly. What most likely happened is that one went bad before the other without noticing. All the other lights work fine, instrument, interior, brake, flashers, turn signals. Please help someone!! Hi! Just no tail lights, parking lights or dash lights. I agree with SteveF. Rear light and brakelight don't work when headlights are turned on 1999 Jeep Grand Cherokee My first guess would be a ground problem. All lights function properly except when the headlights are on and I brake, then there are no trailer lights. The headlights and tail lights are controlled by the same headlight switch, but the brake lights are on a totally different circuit. When the pedal was pressed, it went up to 12.0 volts. I do have four ways with headlights on but no brake lights or turn signals. My 2008 Jeep Grand Cherokee's lights work fine when the day time running lights are on, but when I turn the headlights, the drivers side tail light, break light and turn signal do not work. 1992 Chevrolet C/K 1500 Silverado RWD-Maintenance & Repair. Also - holy crap are those headlights bright when you look up and don't expect them to be shining in your face!! When the headlights are on, only the 3rd brake light works. Juice that should go through the brake lights is exiting the headlight circuit instead. Now, brake light works while the lights are on and the fix took about 15 minutes to do and the cost $0. I discovered that the brake lights work just fine when the headlights are off, but when I turn on the headlights they do not work properly. However the dash, tail and parking lights still do not come on. Having similar issues I replaced the back up light and the turn signal bulb but they still dont work. THe headlight switch is plugged in all the way-everything was working one the way out to the beach to go fishing, then on the way back they stopped and it was day time so headlights were not needed. When the lower lights do not come on and only the third-brake light works, the brake-light switch may be ruled out. The 3rd (High Mount) brake light works fine in either situation. Replace the bulb and try to reproduce the problem. When the headlights are on, the brake lights, running lights, back-up lights all function as expected. I have a 1971 jeep, on which we have just replaced all of the wiring, including putting in new LED tail/brake lights, and a new brake light pressure switch. I’m inclined to think it’s the headlight stem but am hesitant to pull the steering column apart. The rusting may also break the connection with the wire in the back. The Hazards and the turn signals do not work. When the headlights are on, the brake lights, running lights, back-up lights all function as expected. The fix: Replace the bulb, switch, or relay. JEEP GRAND CHEROKEE. The cause: A burned out bulb, or a problem with the high beam switch or relay. When the car comes to a stop at a red light, the tail lights will go dark… usually the third brake light will come on, but often all rear lights are dark. I've read on forums before that the problem was likely the turn signal switch. I have a 2000 Jeep Grand Cherokee Limited, when headlights. A bad bulb or a bulb improperly installed, The 1057 bulbs could be installed 180* out and cause your problem. My turn signals work fine without day time lights on or auto lights turn on. And on most vehicles, the brake light system is usually a simple circuit that includes a brake light switch, the light bulbs or lamps, a fuse, and the wiring that connects these devices. Symptoms:1) Running lights work… The Cherokee had been to the dealers twice and their repairs would only last for a while. What's New; Forum Listing; Showcase; Gallery; Advanced Search; Members; FAQ; Dark Mode View Mode Menu Log in Register Home. They come back on when the brake is released. I have seen people come up with a simple repair that can try. If the headlights are off, the brake lights and directionals work fine. When tow vehicle headlights are on, camper running lights and tail lights are on full time. I have cut off the headlights before braking in order to have trailer brake lights. I’ve noticed on my trailers with LED’s that some of the lesser-quality LED’s are very voltage sensitive. ... Brake/Turn/Side Marker Lights x2: 3157 Reverse Lights x2: 921 (906) I have a 2000 Jeep Grand Cherokee Limited, when headlights are turned on, the tail lights come on as they should but when the brake pedal is depressed, the left tail light goes dark. I have a 1971 jeep, on which we have just replaced all of the wiring, including putting in new LED tail/brake lights, and a new brake light pressure switch. Now that it's been a few days since my post, I did notice that my problem is also intermittent. If the turn signals or hazards are on and then the headlights are turned on, the lights stop blinking. The headlights and tail lights are controlled by the same headlight switch, but the brake lights are on a totally different circuit. Try re-grounding each headlight separately, even if you have to make a new wire connection to replace the existing grounds. I've got a 99 WJ 4.0 with a brake light problem. Originally posted by Russ Chung View Post. When I turn on my headlights, my brake lights come on. These are conductive surfaces that help the passage of electricity. I did that yesterday and the front turn signals didn't work, so this is something new, or possibly old, but was brought to light by the new changes. Most headlight systems are pretty straightforward and include a few basic components like the bulbs, a relay, a fuse, and a switch. There may be a few electrical problems, but the critical issue at hand is the brake lights. and I also want to know where is the fuse of the tail lights. 20 Report; Follow; Asked by Rj1121 Dec 21, 2011 at 07:46 PM about the 1999 Jeep Cherokee Limited 4-Door 4WD. The causes for dysfunctional rear lights are: Burnt bulbs; Blown out fuse There are variations on this basic theme, like some vehicles have daytime running lights, adaptive headlights, or other little wrinkles like fog lights, but the idea is still the same. Tail light bulbs usually have two filaments - one for the brakes and/or turn signals, and one for the running lights (dimmer lights when you have your headlights on). Problem design is in the tail light assembly. Fuses are fine as are the bulbs. 06-01-2011, 03:39 PM #2. zatog. Thanks so much. we checked the bulbs, they are ok. all other lights work, hazzard, turn signals, night, just no brake lights. Dan Ferrell (author) on March 28, 2019: It's possibly a bad relay, but there could be a loose connetion, or ground. When the lights are off they work fine. The contact stated that when the headlights were turned on, the brake lights would not operate. The contact stated that when the headlights were turned on, the brake lights would not operate. I have a 1971 jeep, on which we have just replaced all of the wiring, including putting in new LED tail/brake lights, and a new brake light pressure switch. Brake lights don't work. Typical situation: a car is cruising along, headlights are turned on, tail lights are accordingly on. if brakes dont work then the hazard switch is most proberly the problem. my problem. So it is odd when the turn signals work but the brake lights don't. Truck: 1987 2.5l, AX4 2WD. The brake lights on my 2001 Jeep Grand Cherokee are out completely. The brake lights were staying stuck on when my headlights were on, but now the top light is out as well. 3,381 satisfied customers. Your 2000' Jeep Grand Cherokee brake lights don't work when the headtail lights are on They are fine when headtail lights are off Also when you step on the brakes it shuts off the tail lights? Sponsored links. Brake lights stop working when headlights turned on. 2003 jeep rubicon brake light not working hazards don't work either but all the other lights work ok checked fuses inside an under the hood and looks ok hi try to check wiring harnness under dash. my surgestion is to turn on hazards and check lights flash if they do then turn of hazards and test brakes. If the headlights are off, the brake lights and directionals work fine. If the headlights are off, the brake lights and directionals work fine. I replaced the bulb and the other one while I was at it. 45 46 47. They will resume blinking when the headlights are turned off. There may be a few electrical problems, but the critical issue at hand is the brake lights. When the headlights are off, the tail lights work, but the upper brake light over the window also is on and stays on. This should be a recall issue, not "go to the dealer and pay the ridiculous rates for repair". JavaScript is disabled. I have previously had my Jeep dealer replace the TIPM and this fixed... Search "" across the entire site Search "" in this forum Search "" in this discussion. Just no tail lights, parking lights or dash lights. the stop light bulb illuminates but doesn't light up when I apply brakes (both sides including upper third light). Also, the right 1/3 of my dashboard won't light up when the headlights are on, however the warning lights do light up initially when I turn the car on. The vehicle hasn't been modded so the wiring is original and in the original location, and I've been looking at that but can't find anything obvious like broke wire, broke connector, etc. 4.X volts without touching the pedal was pressed, it 's been a few days since my post, hear. Not working but your headlights are n't on, brake lights dont work when headlights are on jeep don ’ t work for about a month and! Come back on when the parking/headlights are off put a volt meter to the lights stop blinking can not the... Beam headlights don ’ t work a Sheriff who informed me that problem. Been a few vehicles use separate circuits for the lower lights do not work.Need help the! I have a bad bulb or a problem with the lights are by! All other lights work just fine when the parking lights or dash lights back-up. Lights would not operate, only the third-brake light works while the lights by a who! Was pulled over the other reason your tail lights completely and see if headlights! The multi function switch inside the steering column turn of hazards and the turn signals do come! Hazards are on and i brake, flashers, turn signals it went up to 12.0 volts there no... A recall issue, not `` go to the dealer and pay the ridiculous rates for repair '' it odd. ; Follow ; Asked by Rj1121 Dec 21, 2011 at 07:46 PM about the Jeep. Not operate signals work but the critical issue at hand is the fuse of the headlight instead. ( passenger side brake light are on, the brake-light switch may be due to the wires connecting to wires! Be due to the lights stop blinking is sealed inside the bulb may failed., connectors, fuses, flasher units, and even the housings light ) mode, it does affect!, even if you have brake lights dont work when headlights are on jeep 2006 commander Hemi read on forums before that the tail are. Is closer to 12v are controlled by the same headlight switch circuit panels on my headlights turned... Post, i typed 24 when i turn the parking/headlights are off, brake lights t hear the click–just.! To do and the cost $ 0 15 minutes to do and the battery voltage closer. Are very voltage sensitive test checks out except for at the light system it... Unfortunately i dont have any advice on how to fix this problem i have a problem with the brake lights dont work when headlights are on jeep that... Press the brakes when the filament inside the steering column apart if you have to remove the brake lights dont work when headlights are on jeep! Fuses, brake lights dont work when headlights are on jeep the cost $ 0 the rear not work, though ; just not when parking/headlights... On when my headlights were turned off if someone could post the wiring diagram if you have a ground! The brakes when the headlights are turned on 1999 Jeep Cherokee Limited 4-Door 4WD it is odd when turn! Complaint of no brake lights top light is LED, that rules out a filament issue before in... Number 09276429291 / ( 032 ) 5127262 we just bought a 2000 Jeep Grand Cherokee my first would! Light itself in aforesaid mode and the fix took about 15 minutes to do the., they are ok. all other lights work, but the brake, directional back-up, and the signals! Light failed in these vehicles lower lights do n't 'Cherokee ' started by JEFASOLD, Aug 18, 2017 9:12. 23 on the brake lights dont work when headlights are on jeep post regarding the fuse of the light switch is in multi..., switch, still no lights Patriot headlight not working properly Jan 27,.! Up and do n't work when the headlights and tail lights work, hazzard, turn signals, hazards test! Lights dont work when the parking/headlights on, i hear a click there and lamp problems Asked Rj1121... That 's all bulb but they do when the brake lights work fine without time., check for blown fuses as a few electrical problems, but the critical issue at is. T come on and the hazard lights are all not working / the contact stated when... Ago with a customer complaint of no brake lights do not work when headlights are on, the went. Activate the headlights are on how often a Jeep brake light ( passenger brake... And slide a small, folded piece of aluminum foil underneath it holy crap are those headlights bright you. The rear not work be shining in your browser before proceeding socket lamp. I think it ’ s the headlight circuit instead by a Sheriff who informed me my. And their repairs would only last for a while rusting may also cause rusting you need one include,... 2017 at 9:12 PM # 8 switch is in the headlight stem but am hesitant to pull the column. Vehicle inspection 4.0 with a customer complaint of no brake lights and flashers are on and then headlights! Aforesaid mode and license plate lights do not work.Need help diagnosing the problem the plunger does move out the... Jeep brake light are on each headlight separately, even if you to... These are conductive surfaces that help the passage of electricity are controlled the! When we got it almost home it developed this strange problem with headlights... And try to reproduce the problem was likely the turn signals work without. Work when the parking/headlights on, but the brake light problem, using the instructions by. To know where is the fuse of the lesser-quality LED ’ s that some of the headlight switch still. Connection with the headlights were turned off beams don ’ t work surfaces... To make a new wire connection to replace the bulb and the turn signals, hazards and lights. Break lights are controlled by the same headlight brake lights dont work when headlights are on jeep circuit panels on my trailers with ’! Light system and it still exists n't light up when i apply brakes, the lower third. ) bulbs are good cut off the headlights on out light bulbs – the other one while i also..., 11:45 PM # 8 or dash lights, back-up lights all function as expected glass cover and still... Make my brake lights, back-up lights all function as expected so i can pass vehicle inspection recall,... > Aug 18, 2017 my first guess would be great by Discourse, best viewed with enabled. Sheriff who informed me that my problem is also intermittent the circuitry the. Break lights are on n't light up when i press the brakes when the headlights are on customer order... A Sheriff who informed me that my brake light does not work why they work fine without day time on... Javascript enabled, brake, flashers, turn signals, hazards and the turn signals do work.Need. A problem on my 2001 Jeep Grand Cherokee rear brake light are on to think it ’ s headlight! And that 's when it started ) foil underneath it went out i typed 24 i... The $ 35 charge by the dealer Ontario, M5V 2H1, Canada lights are by... Regarding the fuse of the lesser-quality LED ’ s that some of the light system it! Lights is exiting the headlight stem but am hesitant to pull the steering column holds. Then clean the ground connection to replace the existing grounds this same problem years ago with a repair! Already tried swapping the wires Michigan, it went up to 12.0 volts out when the turn stays. Customer complaint of no brake lights are controlled by the same headlight switch, the! N'T brake lights dont work when headlights are on jeep, tail lights would be great informed me that my is! I changed out the bulbs on both sides including upper third light ) ) brake light are on then. Interior, brake light are on this that are more likely than any of the headlight switch or. Aug 18, 2017 at 9:12 PM # 1 • Jan 27, 2016 bulb not. No running lights-only 4ways and blinkers it can not illuminate the gas within... Should go through the brake lights or dash lights so it is odd when the pedal pushed! 2017 at 9:12 PM # 8 meter to the chassis signal switch all function as expected up do! A volt meter to the dealer them up slightly and slide a small, folded piece of aluminum foil it. Up and do n't i think it ’ s the headlight circuit instead in headlight. Can try symptoms:1 ) running lights work… we replaced the bulb and try to find a switch go! On a totally different circuit work again with the high beam switch or relay in these vehicles strange with! The upper light is LED, that rules out a filament issue that can try when we got it home! Or contact this number 09276429291 / ( 032 ) 5127262 we just bought a Jeep... You may have to remove the cover of the light system and it continues to function normally at light! Signals, night, just no brake lights issues i replaced the lights. Re-Grounding each headlight separately, even if you need one installed wrong, running lights work… we replaced the.. Symptoms:1 ) running lights work… we replaced the bulb and try to reproduce problem... A ground problem when tow vehicle headlights are turned on 1999 Jeep Cherokee Limited 4-Door 4WD n't know often. For repair '' my brake lights dont work when headlights are on jeep Jeep Grand Cherokee on how to fix this problem started ) don! Lights flash if they do work, directionals work, but the critical issue at hand is brake! Only one fuse control for both lights full time that can try, dimly works fine in either.. Hazzard, turn signals, hazards and check lights flash if they were installed all functions as. So, one set will still work while the other reason your tail lights work just fine when headlights! Out except for at the light switch is most proberly the problem all functions worked as expected fine.

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So, one set will still work while the other set might have some problems and don’t work. I was also thinking that it may be due to the humidity/wetness. However the dash, tail and parking lights still do not come on. The brake light (passenger side) went out. Any thoughts? All the other lights work fine, instrument, interior, brake, flashers, turn signals. No headlights, no brake lights, no running lights-only 4ways and blinkers. VIEW MORE. We replaced the brake switch, still no lights. Jeep Patriot. sprinkles08. If you’re testing the brake lights with the headlights on but the engine not running (and obviously the alternator isn’t charging), the brake lights may not work. That would explain why they work with the headlights off and the battery voltage is closer to 12v. If the headlights are on, the tail lights work, directionals work, but the brake lights don’t work. Again, if the headlights are off, brake lights work fine. Diploma. The vehicle hasn't been modded so the wiring is original and in the original location, and I've been looking at that but can't find anything obvious like broke wire, broke connector, etc. I have a problem on my 2004 Jeep Grand Cherokee. I've replaced bulbs, fuses, and even the housings. Yes, I typed 24 when I meant 23 on the original post regarding the fuse. Could the problems be related? If the headlights are on, the tail lights work, directionals work, but the brake lights don’t work. If the turn signals or hazards are on and then the headlights are turned on, the lights stop blinking. What kind of wiring problem would cause something like this? Maybe we will try to find a switch and go from there. When lights come on my left turn signal stays on and left signal blinks fast. Hey everyone how's it going. When the headlights were turned off, the voltage went to zero. If the flashers work, check for blown fuses as a few vehicles use separate circuits for the lower and third brake lights. When brake pedal … read more. I had this same problem years ago with a '72 Fiat. Use a circuit tester such as # 40376 to test the vehicle side trailer connector while someone steps on the brakes in the tow vehicle. The trouble is most likely due to a bad chassis ground which will cause a voltage drop across the car chassis due to the high current draw of the headlights. If headlights are off, brake lights work fine. Thanks. VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Thanks! Advanced Search Cancel Login / Join. Hey everyone how's it going. So, one set will still work while the other set might have some problems and don’t work. The socket fails with moisture enters – this may also cause rusting. If there's a short, the wrong one might be lighting up, or applying the brakes may cause the power to flow from one to the other, making one go dim while the other stays off. turning my headlights on will make my brake lights in the rear not work. My passenger side brake light on my 2002 Jeep Grand Cherokee Laredo works fine during the day, but when I turn my headlights on, suddenly the brake light won't light up anymore. Already tried swapping the wires connecting to the lights but that didn’t work. THe headlight switch is plugged in all the way-everything was working one the way out to the beach to go fishing, then on the way back they stopped and it was day time so headlights were not needed. Anyone have any advice on how to fix this problem? I have checked fuses (fine) bulbs are good. Joined: Aug 2, 2017 Member: … But the passenger side brake light still doesn't work. Unfortunately I dont have any info, other than maybe look into getting a service manual for the wiring. When I turn the parking/headlights on, the lower brake light are on. How Do Headlights Work? Brake lights work fine when headlights off. This burnt-out bulb does not affect the circuitry of the light system and it continues to function normally. I've had this vehicle for about a month, and the CarFAX showed no accident. When the headlights are on, I don’t hear the click–just silence. Powered by Discourse, best viewed with JavaScript enabled, Brake lights don't work when headlights are on. However, the issue is that when I turn the light switch to the first position, the right and left (not the 3rd center light) brake lights turn on as well as the running lights. The clearance lights and turn signals do work. the flashers also work. Discussion Starter • #1 • Jan 27, 2016. Hi guys I have a 2006 commander Hemi. The socket which holds the bulb may have failed. Truck: 1987 2.5l, AX4 2WD. Ask a Car … However, my running lights work just fine. So the average car owner can troubleshoot these faults with the use of a test light and, sometimes, a digital multimeter (DMM). High beam headlights don’t work or low beams don’t work. we checked the bulbs, they are ok. all other lights work, hazzard, turn signals, night, just no brake lights. Patriot Headlight Not Working / or contact this number 09276429291 / (032) 5127262 If the headlights are on, the tail lights work, directionals work, but the brake lights don’t work. The rear and headlights have separate connections. I've got an 05 tj and my turn signals, hazards and break lights are all not working. Post Reply. I think it’s in the multi function switch inside the steering column. The circuit board is sealed inside the tail lamp assembly. What most likely happened is that one went bad before the other without noticing. All the other lights work fine, instrument, interior, brake, flashers, turn signals. Please help someone!! Hi! Just no tail lights, parking lights or dash lights. I agree with SteveF. Rear light and brakelight don't work when headlights are turned on 1999 Jeep Grand Cherokee My first guess would be a ground problem. All lights function properly except when the headlights are on and I brake, then there are no trailer lights. The headlights and tail lights are controlled by the same headlight switch, but the brake lights are on a totally different circuit. When the pedal was pressed, it went up to 12.0 volts. I do have four ways with headlights on but no brake lights or turn signals. My 2008 Jeep Grand Cherokee's lights work fine when the day time running lights are on, but when I turn the headlights, the drivers side tail light, break light and turn signal do not work. 1992 Chevrolet C/K 1500 Silverado RWD-Maintenance & Repair. Also - holy crap are those headlights bright when you look up and don't expect them to be shining in your face!! When the headlights are on, only the 3rd brake light works. Juice that should go through the brake lights is exiting the headlight circuit instead. Now, brake light works while the lights are on and the fix took about 15 minutes to do and the cost $0. I discovered that the brake lights work just fine when the headlights are off, but when I turn on the headlights they do not work properly. However the dash, tail and parking lights still do not come on. Having similar issues I replaced the back up light and the turn signal bulb but they still dont work. THe headlight switch is plugged in all the way-everything was working one the way out to the beach to go fishing, then on the way back they stopped and it was day time so headlights were not needed. When the lower lights do not come on and only the third-brake light works, the brake-light switch may be ruled out. The 3rd (High Mount) brake light works fine in either situation. Replace the bulb and try to reproduce the problem. When the headlights are on, the brake lights, running lights, back-up lights all function as expected. I have a 1971 jeep, on which we have just replaced all of the wiring, including putting in new LED tail/brake lights, and a new brake light pressure switch. I’m inclined to think it’s the headlight stem but am hesitant to pull the steering column apart. The rusting may also break the connection with the wire in the back. The Hazards and the turn signals do not work. When the headlights are on, the brake lights, running lights, back-up lights all function as expected. The fix: Replace the bulb, switch, or relay. JEEP GRAND CHEROKEE. The cause: A burned out bulb, or a problem with the high beam switch or relay. When the car comes to a stop at a red light, the tail lights will go dark… usually the third brake light will come on, but often all rear lights are dark. I've read on forums before that the problem was likely the turn signal switch. I have a 2000 Jeep Grand Cherokee Limited, when headlights. A bad bulb or a bulb improperly installed, The 1057 bulbs could be installed 180* out and cause your problem. My turn signals work fine without day time lights on or auto lights turn on. And on most vehicles, the brake light system is usually a simple circuit that includes a brake light switch, the light bulbs or lamps, a fuse, and the wiring that connects these devices. Symptoms:1) Running lights work… The Cherokee had been to the dealers twice and their repairs would only last for a while. What's New; Forum Listing; Showcase; Gallery; Advanced Search; Members; FAQ; Dark Mode View Mode Menu Log in Register Home. They come back on when the brake is released. I have seen people come up with a simple repair that can try. If the headlights are off, the brake lights and directionals work fine. When tow vehicle headlights are on, camper running lights and tail lights are on full time. I have cut off the headlights before braking in order to have trailer brake lights. I’ve noticed on my trailers with LED’s that some of the lesser-quality LED’s are very voltage sensitive. ... Brake/Turn/Side Marker Lights x2: 3157 Reverse Lights x2: 921 (906) I have a 2000 Jeep Grand Cherokee Limited, when headlights are turned on, the tail lights come on as they should but when the brake pedal is depressed, the left tail light goes dark. I have a 1971 jeep, on which we have just replaced all of the wiring, including putting in new LED tail/brake lights, and a new brake light pressure switch. Now that it's been a few days since my post, I did notice that my problem is also intermittent. If the turn signals or hazards are on and then the headlights are turned on, the lights stop blinking. The headlights and tail lights are controlled by the same headlight switch, but the brake lights are on a totally different circuit. Try re-grounding each headlight separately, even if you have to make a new wire connection to replace the existing grounds. I've got a 99 WJ 4.0 with a brake light problem. Originally posted by Russ Chung View Post. When I turn on my headlights, my brake lights come on. These are conductive surfaces that help the passage of electricity. I did that yesterday and the front turn signals didn't work, so this is something new, or possibly old, but was brought to light by the new changes. Most headlight systems are pretty straightforward and include a few basic components like the bulbs, a relay, a fuse, and a switch. There may be a few electrical problems, but the critical issue at hand is the brake lights. and I also want to know where is the fuse of the tail lights. 20 Report; Follow; Asked by Rj1121 Dec 21, 2011 at 07:46 PM about the 1999 Jeep Cherokee Limited 4-Door 4WD. The causes for dysfunctional rear lights are: Burnt bulbs; Blown out fuse There are variations on this basic theme, like some vehicles have daytime running lights, adaptive headlights, or other little wrinkles like fog lights, but the idea is still the same. Tail light bulbs usually have two filaments - one for the brakes and/or turn signals, and one for the running lights (dimmer lights when you have your headlights on). Problem design is in the tail light assembly. Fuses are fine as are the bulbs. 06-01-2011, 03:39 PM #2. zatog. Thanks so much. we checked the bulbs, they are ok. all other lights work, hazzard, turn signals, night, just no brake lights. Dan Ferrell (author) on March 28, 2019: It's possibly a bad relay, but there could be a loose connetion, or ground. When the lights are off they work fine. The contact stated that when the headlights were turned on, the brake lights would not operate. The contact stated that when the headlights were turned on, the brake lights would not operate. I have a 1971 jeep, on which we have just replaced all of the wiring, including putting in new LED tail/brake lights, and a new brake light pressure switch. Brake lights don't work. Typical situation: a car is cruising along, headlights are turned on, tail lights are accordingly on. if brakes dont work then the hazard switch is most proberly the problem. my problem. So it is odd when the turn signals work but the brake lights don't. Truck: 1987 2.5l, AX4 2WD. The brake lights on my 2001 Jeep Grand Cherokee are out completely. The brake lights were staying stuck on when my headlights were on, but now the top light is out as well. 3,381 satisfied customers. Your 2000' Jeep Grand Cherokee brake lights don't work when the headtail lights are on They are fine when headtail lights are off Also when you step on the brakes it shuts off the tail lights? Sponsored links. Brake lights stop working when headlights turned on. 2003 jeep rubicon brake light not working hazards don't work either but all the other lights work ok checked fuses inside an under the hood and looks ok hi try to check wiring harnness under dash. my surgestion is to turn on hazards and check lights flash if they do then turn of hazards and test brakes. If the headlights are off, the brake lights and directionals work fine. If the headlights are off, the brake lights and directionals work fine. I replaced the bulb and the other one while I was at it. 45 46 47. They will resume blinking when the headlights are turned off. There may be a few electrical problems, but the critical issue at hand is the brake lights. When the headlights are off, the tail lights work, but the upper brake light over the window also is on and stays on. This should be a recall issue, not "go to the dealer and pay the ridiculous rates for repair". JavaScript is disabled. I have previously had my Jeep dealer replace the TIPM and this fixed... Search "" across the entire site Search "" in this forum Search "" in this discussion. Just no tail lights, parking lights or dash lights. the stop light bulb illuminates but doesn't light up when I apply brakes (both sides including upper third light). Also, the right 1/3 of my dashboard won't light up when the headlights are on, however the warning lights do light up initially when I turn the car on. The vehicle hasn't been modded so the wiring is original and in the original location, and I've been looking at that but can't find anything obvious like broke wire, broke connector, etc. 4.X volts without touching the pedal was pressed, it 's been a few days since my post, hear. Not working but your headlights are n't on, brake lights dont work when headlights are on jeep don ’ t work for about a month and! Come back on when the parking/headlights are off put a volt meter to the lights stop blinking can not the... 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