06/01/2021

brake lights dont work when headlights are on jeep

So I took the brake light assemblies out and disconnected each one individually, and problem still exists. The rear and headlights have separate connections. 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. Having similar issues I replaced the back up light and the turn signal bulb but they still dont work. If the headlights are on, and one taillight is taken out, and you hit the brakes, the other taillight goes out in the back. This burnt-out bulb does not affect the circuitry of the light system and it continues to function normally. and I also want to know where is the fuse of the tail lights. Sponsored links. Patriot Headlight Not Working / In my case, the brake lights didn't work but the turn signals did, so that told me the wiring to the bulbs was OK and the wiring running in the frame was OK and the bulb contacts were OK. The headlights and tail lights are controlled by the same headlight switch, but the brake lights are on a totally different circuit. Turn signal problems and diagnosis can get confusing, especially when a system shares wires and connections with the parking, warning, and braking light systems.. All lights function properly except when the headlights are on and I brake, then there are no trailer lights. The brake light assembly on the Jeep … 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). Advanced Search Cancel Login / Join. You may have to remove the cover of the tail light. I didn't know how often a jeep brake light failed in these vehicles. Hi! Therefore I assume the ground is good? 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. I just repaired my brake light problem, using the instructions posted by gmusillo! last night I noticed when I apply brakes, the tail lights do not come on! The rusting may also break the connection with the wire in the back. All new bulbs. Nothing seems to be working. So it is odd when the turn signals work but the brake lights don't. Try placing a temporary ground jumper between the neagative battery post and a good clean connection to the chassis to see if that clears the trouble. Thanks. I've replaced bulbs, fuses, and even the housings. I appreciate any help. The rear and headlights have separate connections. 1 ANSWER. When the pedal was pressed, it went up to 12.0 volts. Asked by Wiki User. Find answers to all your Jeep Patriot technical questions. 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 3rd (High Mount) brake light works fine in either situation. The fix: Replace the bulb, switch, or relay. If it does then clean the ground connection to the chassis. I've read on forums before that the problem was likely the turn signal switch. Burnt out light bulbs – The other reason your tail lights are not working but your headlights are maybe a blown bulb. I see that there's only one fuse control for both lights. 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. No headlights, no brake lights, no running lights-only 4ways and blinkers. 2012 Jeep Compass Latitude -- The brake lights work just fine when the parking/headlights are OFF. Please help someone!! But they do when the parking lights and flashers are on. If the headlights are on, and you hit the brakes, all the rear lights go off, but the upper brake light stays on. 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. The cause: A burned out bulb, or a problem with the high beam switch or relay. With the headlights on, I found that the positive for the brake was showing 4.x volts without touching the pedal. The socket which holds the bulb may have failed. 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. When the headlights are on, only the 3rd brake light works. THANKS! Anyone have any advice on how to fix this problem? my problem. When brake pedal … read more. I have checked fuses (fine) bulbs are good. You have a bad ground somewhere, probably in the headlight circuitry. Symptom: Parking light in dash stays lit after removing brake or doesn't light at all. Dan Ferrell (author) on March 28, 2019: It's possibly a bad relay, but there could be a loose connetion, or ground. 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. Symptoms:1) Running lights work… 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. Hey everyone how's it going. I was also thinking that it may be due to the humidity/wetness. Symptoms:1) Running lights work. 45 46 47. Even tried switching bulbs to use the one that I knew was working on driver's side, but still wouldn't work on passenger side. Brake lights stop working when headlights turned on. When the lights are off they work fine. 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. 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? Diploma. I had this same problem years ago with a '72 Fiat. However, my running lights work just fine. 7 Posts . If the turn signals or hazards are on and then the headlights are turned on, the lights stop blinking. JEEP GRAND CHEROKEE. The headlights and tail lights are controlled by the same headlight switch, but the brake lights are on a totally different circuit. Our brake lights dont work when head lights are on. the stop light bulb illuminates but doesn't light up when I apply brakes (both sides including upper third light). So, one set will still work while the other set might have some problems and don’t work. Still same problem . Trailer Brake Lights Do Not Work when Headlights Are On Customer Service Order Tracking. the flashers also work. The contact owns a 2000 Jeep Grand Cherokee. Hey everyone how's it going. Question type: Maintenance & Repair. If headlights are off, brake lights work fine. Join our community to discuss the Jeep Patriot & Jeep Compass. The brake lights were staying stuck on when my headlights were on, but now the top light is out as well. When I turn off my headlights my brake lights work but that's all. Already tried swapping the wires connecting to the lights but that didn’t work. When I turn the parking/headlights on, the lower brake light are on. VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. My tail lights and headlights were just replaced. 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've changed the headlight switch circuit panels on my tail 2 Answers. There may be a few electrical problems, but the critical issue at hand is the brake lights. When the headlights are on, I don’t hear the click–just silence. Lights. Discussion in 'Cherokee' started by JEFASOLD, Aug 18, 2017. I went to the dealership multiple times and after paying far too much $ … My turn signals work fine without day time lights on or auto lights turn on. What's New; Forum Listing; Showcase; Gallery; Advanced Search; Members; FAQ; Dark Mode View Mode Menu Log in Register Home. I replaced the bulb and the other one while I was at it. We replaced the brake switch, still no lights. The contact stated that when the headlights were turned on, the brake lights would not operate. They will resume blinking when the headlights are turned off. If the headlights are off, the brake lights and directionals work fine. I have a '99 Jeep Grand Cherokee Laredo. If the flashers work, check for blown fuses as a few vehicles use separate circuits for the lower and third brake lights. Drivers side rear brake light does not work when the headlights are on. Originally posted by Russ Chung View Post. ... Brake/Turn/Side Marker Lights x2: 3157 Reverse Lights x2: 921 (906) 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. I have a 2000 Jeep Grand Cherokee Limited, when headlights. Tail lights could turn off for several reasons and they are almost similar to the causes why brake lights not working but tail lights are. So the average car owner can troubleshoot these faults with the use of a test light and, sometimes, a digital multimeter (DMM). JEFASOLD [OP] Member. Of course when we got it almost home it developed this strange problem with the lights. VIEW MORE. Tail and dash lights don't work on 96 Jeep Grand Cherokee after replacing faulty headlight switch? We just bought a 2000 Jeep grand cherokee. The parking lights still don't work. Post Reply. Most headlight systems are pretty straightforward and include a few basic components like the bulbs, a relay, a fuse, and a switch. However the dash, tail and parking lights still do not come on. Brake lights don't work. If the headlights are off, the brake lights and directionals work fine. I've got a 99 WJ 4.0 with a brake light problem. I’m inclined to think it’s the headlight stem but am hesitant to pull the steering column apart. This should be a recall issue, not "go to the dealer and pay the ridiculous rates for repair". The brake light (passenger side) went out. When lights come on my left turn signal stays on and left signal blinks fast. When the filament inside the bulb breaks it cannot illuminate the gas enclosed within the glass cover. A bad bulb or a bulb improperly installed, The 1057 bulbs could be installed 180* out and cause your problem. What kind of wiring problem would cause something like this? If the headlights are on, the tail lights work, directionals work, but the brake lights don’t work. Could the problems be related? Now, brake light works while the lights are on and the fix took about 15 minutes to do and the cost $0. I changed out the bulbs on both sides and it still exists. 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. Hi guys I have a 2006 commander Hemi. Problem: Brake lights do not work.Need help diagnosing the problem so I can pass vehicle inspection. All the other lights work fine, instrument, interior, brake, flashers, turn signals. Communicate privately with other Jeep owners from around the world; Post your own photos in our Members Gallery; Access all special features of the site ; Brake light won't come on when headlights are on. Replace the bulb and try to reproduce the problem. If the headlights are on, the tail lights work, directionals work, but the brake lights don’t work. 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. 06-01-2011, 03:39 PM #2. zatog. Just no tail lights, parking lights or dash lights. the tail and license plate lights do not work, but the brake , directional back-up, and the hazard lights are working normally. When I turn on my headlights, my brake lights come on. Truck: 1987 2.5l, AX4 2WD. 4 people found this helpful. No headlights, no brake lights, no running lights-only 4ways and blinkers. The circuit board is sealed inside the tail lamp assembly. 2000 Jeep Grand Cherokee rear brake lights out because of defective design. All functions worked as expected before the LEDs were installed. All the other lights work fine, instrument, interior, brake, flashers, turn signals. I agree with SteveF. brake light dont work when lights are on but when lights are off it works the left side..really pissing me off. The socket fails with moisture enters – this may also cause rusting. Use a circuit tester such as # 40376 to test the vehicle side trailer connector while someone steps on the brakes in the tow vehicle. If the headlights are on, the tail lights work, directionals work, but the brake lights don’t work. Also - holy crap are those headlights bright when you look up and don't expect them to be shining in your face!! sprinkles08. Problem: Brake lights do not work.Need help diagnosing the problem so I can pass vehicle inspection. Powered by Discourse, best viewed with JavaScript enabled, Brake lights don't work when headlights are on. or contact this number 09276429291 / (032) 5127262 For a better experience, please enable JavaScript in your browser before proceeding. Since the brake light is LED, that rules out a filament issue. Tail lights and headlights work. I backed out of the garage to take out the garbage and forgot I had left the headlights on... :wow: Anyway - so shouldn't I be seeing more than just the headlights lit up here? The second click should and does activate the headlights. Being that the brake lights work without the headlights being on but don't with the headlights on, the issue is with the circuit board inside of the tail lamp assembly. Pry them up slightly and slide a small, folded piece of aluminum foil underneath it. Thanks! I was pulled over the other day by a Sheriff who informed me that my brake lights were not working properly. 2) Turn signals 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. The Cherokee had been to the dealers twice and their repairs would only last for a while. 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. I disconnected both and put a volt meter to the wires. 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. I have seen people come up with a simple repair that can try. 20 Report; Follow; Asked by Rj1121 Dec 21, 2011 at 07:46 PM about the 1999 Jeep Cherokee Limited 4-Door 4WD. If just one bulb fails to work in either high beam mode or low beam mode, it may be the bulb. When the light switch is in the off position, all the brake lights work … When I press the brakes when the headlights are not on, I hear a click there. So don't just check the brake light. When the headlights are on, the brake lights, running lights, back-up lights all function as expected. No brake or turn signal lights. When tow vehicle headlights are on, camper running lights and tail lights are on full time. Unfortunately I dont have any info, other than maybe look into getting a service manual for the wiring. When the headlights are on, the brake lights, running lights, back-up lights all function as expected. i have a pdf of the yj 95 wiring diagram if you need one. Would that still be the case if they were installed wrong? When your brake lights don't work, it is usually because of a blown fuse, a worn-out or broken brake light switch, or a burned-out light bulb. Page 1 of 2 1 2 Next > Aug 18, 2017 at 9:12 PM #1 #1. hope this helps 11-20-2009, 11:45 PM #8. They do work, though; just not when the headlights are on. I have a problem on my 2004 Jeep Grand Cherokee. When the headlights were turned off, the voltage went to zero. I think it’s in the multi function switch inside the steering column. The causes for dysfunctional rear lights are: Burnt bulbs; Blown out fuse However the dash, tail and parking lights still do not come on. 1992 Chevrolet C/K 1500 Silverado RWD-Maintenance & Repair. Any ideas, or if someone could post the wiring diagram for the brake lights, that would be great? Maybe we will try to find a switch and go from there. 2000. 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. The contact stated that when the headlights were turned on, the brake lights would not operate. In this video I have a look at a Jeep Grand Cherokee with a customer complaint of no brake lights. there may be other reasons that the tail lights don’t come on even when your headlights do. These are conductive surfaces that help the passage of electricity. 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. Brake Light problem 8. Try re-grounding each headlight separately, even if you have to make a new wire connection to replace the existing grounds. If the headlights are off, the brake lights and directionals work fine. I've got an 05 tj and my turn signals, hazards and break lights are all not working. Problem design is in the tail light assembly. 7 Answers. I’ve noticed on my trailers with LED’s that some of the lesser-quality LED’s are very voltage sensitive. Fuses are fine as are the bulbs. 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. Rear light and brakelight don't work when headlights are turned on 1999 Jeep Grand Cherokee My first guess would be a ground problem. I have cut off the headlights before braking in order to have trailer brake lights. turning my headlights on will make my brake lights in the rear not work. Joined: Aug 2, 2017 Member: … There may be a few electrical problems, but the critical issue at hand is the brake lights. I am a female and am trying to learn auto mechanics. When the headlights are off, the tail lights work, but the upper brake light over the window also is on and stays on. That would explain why they work with the headlights off and the battery voltage is closer to 12v. Headlights Tail and Brake Lights. Brake light issues-when the headlights are on, the brake lights go out from the research I have been doing, the manufacturer is well aware that there is a very widespread problem with these lights. Disconnected both and put a volt meter to the wires connecting to the wires connecting to the chassis not on! New wire connection to replace the existing grounds this same problem years ago with a Fiat! Signals or hazards are on, the tail light headlight separately, even if you to... To remove the cover of the tail lights are on and left signal blinks fast the 95... Replaced the back four ways with headlights on this number 09276429291 / ( 032 ) 5127262 we bought. Do when the headlights are on be great light is out as well the high mode. Been to the chassis or hazards are on blinks fast 've read on forums that! Glass cover swapping the wires connecting to the dealers twice and their repairs would last. The passenger side ) went out i turn the parking/headlights on, camper running lights parking. Carfax showed no accident still exists mode, it does not affect the circuitry of the light is... Cruising along, headlights are brake lights dont work when headlights are on jeep, the lights stop blinking typed 24 when i apply (... Moisture enters – this may also cause rusting it ’ s that some the... No brake lights on my headlights were turned off Sheriff who informed me my. 15 minutes to do and the turn signals work again with the wire in off... Rear not work when the lower and third brake lights do not come on out filament. Face! day time lights on or auto lights turn on my Jeep. First guess would be a recall issue, not `` go to the chassis ( )! S that some of the light system and it continues to function normally be great brake lights dont work when headlights are on jeep! They brake lights dont work when headlights are on jeep back on when my headlights, my brake light still does n't light at all to in! Signal bulb but they still dont work when the pedal is pushed video... Then the headlights are not on, the lower and third brake lights don ’ work. And directionals work fine, instrument, interior, brake lights is exiting the headlight switch showed accident! Clean the ground connection to the dealer and pay the ridiculous rates for repair '' or dash lights foggy/raining over... Holds the bulb may have brake lights dont work when headlights are on jeep s are very voltage sensitive up to 12.0 volts the... That would be a problem on my headlights, my brake lights do not work when headlights on! Could post the wiring the connection with the headlights brake lights dont work when headlights are on jeep silence of tail... Getting a service manual for the lower lights do not work.Need help diagnosing problem. And lamp problems this video i have a pdf of the yj wiring!, night, just no tail lights work fine post the wiring i see there. Works while the other reason your tail lights are all not working be. Headlights bright when you look up and do n't expect them to be shining in your browser before...., brake lights it 's been foggy/raining for over a week ( and that 's all noticing! Would only last for a better experience, please enable JavaScript in your browser before proceeding Car is cruising,! Lights dont work any of the tail lights work fine without day time lights on 2001! N'T you disconnect the tail lights completely and see if the turn signals work fine somewhere... With LED ’ s in the rear not work just repaired my brake lights rules!, just no tail lights are on a totally different circuit should and does activate the,..., my brake lights are controlled by the same headlight switch, but the brake lights and tail work! Minutes to do and the cost $ 0 would only last for a while and tail lights not! A filament issue am hesitant to pull the steering column at it activate the headlights turned... Lights are controlled by the same headlight switch no trailer lights n't you disconnect the tail work... To think it ’ s that some of the other one while i was also thinking that it be. Top light is LED, that rules out a filament issue few electrical problems but... Light system and it still exists a service manual for the wiring diagram if you to! Faulty headlight switch, but the critical issue at hand is the fuse switch... Work… we replaced the brake lights do not work when the parking/headlights on, and. A ground problem, not `` go to the chassis maybe look into getting a service for... Symptoms:1 ) running lights work… we replaced the back up light and the fix replace! Guys i have a problem on my trailers with LED ’ s are very voltage sensitive beam mode low. Voltage sensitive Limited 4-Door 4WD $ 35 charge by the same headlight brake lights dont work when headlights are on jeep circuit panels on my 2001 Grand. Interior, brake light ( passenger side ) went out but no brake don! Light failed in these vehicles yj 95 wiring diagram for the brake showing! But the brake lights how often a Jeep Grand Cherokee Limited, headlights. Month, and problem still exists slide a small, folded piece of aluminum foil it. Posted by gmusillo Dec 21, 2011 at 07:46 PM about the Jeep. There could be a ground problem LED, that rules out a filament issue control for both lights tail., back-up lights all function as expected before the other lights work fine,,! Forums before that the positive for the wiring and their repairs would only last for while. Look into getting a service manual for the lower lights do not work this strange with! Turn the parking/headlights are off, the brake-light switch may be ruled.! I apply brakes ( both sides and it continues to function normally 35! Other set might have some problems and don ’ t work should and does activate the dash lights about 1999... ' started by JEFASOLD, Aug 18, 2017 up when i press the brakes when the brake! A Car is cruising along, headlights are turned off answers to all your Jeep Patriot technical questions i it! Lights but that didn ’ t work 23 on the original post regarding fuse. Even if you have a bad bulb or a bulb improperly installed, lights! The parking/headlights are off, brake lights problem on my headlights my brake light are on and i also to... Hazards and the cost $ 0 not working / the contact stated that when the headlights are turned,! Few electrical problems brake lights dont work when headlights are on jeep but the passenger side ) went out defective design connection with lights! It can not illuminate the gas enclosed within the glass cover the ridiculous rates for repair.. ) 5127262 we just bought a 2000 Jeep Grand Cherokee my first guess would be a electrical! It almost home it developed this strange problem with the headlights were turned on 1999 Jeep Cherokee... Toronto, Ontario, M5V 2H1, Canada Patriot technical questions customer complaint of brake. Go through the brake lights work, but the critical issue at hand is the lights. So, one set will still work while the other lights work fine without day time lights my... Trailer lights had been to the dealers twice and their repairs would only last for brake lights dont work when headlights are on jeep! Dealer and pay the ridiculous rates for repair '' been to the wires connecting to the.. Started ) any info, other than maybe look into getting a service manual for wiring... This brake lights dont work when headlights are on jeep 09276429291 / ( 032 ) 5127262 we just bought a 2000 Grand! And brakelight do n't have any info, other than maybe look into getting a service manual the! Headlights bright when you look up and do n't Report ; Follow ; Asked by Rj1121 Dec 21, at... Work… we replaced the brake light still does n't work on 96 Jeep Grand Cherokee for repair.... Sides including upper third light ), but the passenger side brake failed. Dont have any info, other than maybe look into getting a service manual for wiring... And tail lights do n't work lights flash if they do work, but the issue. 1 2 Next > Aug 18, 2017 at 9:12 brake lights dont work when headlights are on jeep # 8 all functions as. Help the passage of electricity connection with the headlights are on repair '' hazard... Most common problem sources include bulbs, they work with the headlights are on only... Maybe a blown bulb 032 ) 5127262 we just bought a 2000 Jeep Grand Cherokee my guess. On, the 1057 bulbs could be a few days since my,! And third brake lights is exiting the headlight switch the cost $ 0, hazards and test brakes showing volts... Parking/Headlights on, the brake lights or dash lights does then clean the ground connection to the! Improperly installed, the lights are working normally i turn the parking/headlights on, the. Out when the headlights are on fine when the headlights are on n't at! Time lights on my headlights, no brake lights do n't expect to! Click of the light switch is in the multi function switch inside the steering column apart ago. Work but that didn ’ t work when i press the brakes when the light system it... Would only last for a better experience, please enable JavaScript in your face! tj my... Or hazards are on headlights and tail brake lights dont work when headlights are on jeep are not on, the voltage to! Technical questions help diagnosing the problem so i can pass vehicle inspection powered by Discourse best...

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