Brake lights don't 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. The parking lights still don't work. Our brake lights dont work when head lights are on. I've changed the headlight switch circuit panels on my tail 2 Answers. 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. I was also thinking that it may be due to the humidity/wetness. The brake light assembly on the Jeep … Problem design is in the tail light assembly. I replaced the bulb and the other one while I was at it. The clearance lights and turn signals do 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 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. 2) Turn signals work. Why don't you disconnect the tail lights completely and see if the turn signals work again with the headlights on. When the lights are off they work fine. I am a female and am trying to learn auto mechanics. When the headlights are on, the brake lights, running lights, back-up lights all function as expected. Juice that should go through the brake lights is exiting the headlight circuit instead. When I turn on my headlights, my brake lights come on. The plunger does move out when the pedal is pushed. 06-01-2011, 03:39 PM #2. zatog. That would explain why they work with the headlights off and the battery voltage is closer to 12v. The headlights and tail lights are controlled by the same headlight switch, but the brake lights are on a totally different circuit. The first click of the headlight stem should activate the dash lights, tail lights and parking lights, it does not. If the turn signals or hazards are on and then the headlights are turned on, the lights stop blinking. I have cut off the headlights before braking in order to have trailer brake lights. i have a pdf of the yj 95 wiring diagram if you need one. No brake or turn signal lights. Use a circuit tester such as # 40376 to test the vehicle side trailer connector while someone steps on the brakes in the tow vehicle. Of course when we got it almost home it developed this strange problem with the lights. All the other lights work fine, instrument, interior, brake, flashers, turn signals. Discussion Starter • #1 • Jan 27, 2016. The headlights and tail lights are controlled by the same headlight switch, but the brake lights are on a totally different circuit. Now, brake light works while the lights are on and the fix took about 15 minutes to do and the cost $0. Asked by Wiki User. If the flashers work, check for blown fuses as a few vehicles use separate circuits for the lower and third brake lights. You may have to remove the cover of the tail light. if brakes dont work then the hazard switch is most proberly the problem. My tail lights and headlights were just replaced. What kind of wiring problem would cause something like this? When I press the brakes when the headlights are not on, I hear a click there. I didn't know how often a jeep brake light failed in these vehicles. The causes for dysfunctional rear lights are: Burnt bulbs; Blown out fuse I've read on forums before that the problem was likely the turn signal switch. or contact this number 09276429291 / (032) 5127262 When the pedal was pressed, it went up to 12.0 volts. Why Won’t My Tail Lights Work When My Headlights Are On Sometimes tail lights may not work properly while the brake lights are 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. Truck: 1987 2.5l, AX4 2WD. I've got an 05 tj and my turn signals, hazards and break lights are all not working. Thanks. Just no tail lights, parking lights or dash lights. Technician. the flashers also work. No headlights, no brake lights, no running lights-only 4ways and blinkers. Also, I forgot the $35 charge by the dealer. I was pulled over the other day by a Sheriff who informed me that my brake lights were not working properly. Jeep Grand Cherokee Laredo. Symptoms:1) Running lights work… my problem. 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. For a better experience, please enable JavaScript in your browser before proceeding. Typical situation: a car is cruising along, headlights are turned on, tail lights are accordingly on. The rear and headlights have separate connections. I’m inclined to think it’s the headlight stem but am hesitant to pull the steering column apart. The Cherokee had been to the dealers twice and their repairs would only last for a while. 2000 Jeep Grand Cherokee rear brake lights out because of defective design. So it is odd when the turn signals work but the brake lights don't. If the headlights are on, the tail lights work, directionals work, but the brake lights don’t work. 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). The Hazards and the turn signals do not work. The contact stated that when the headlights were turned on, the brake lights would not operate. Re: rear brake light doesn't work when headlights on If you take the tail light assembly off and take the bulb out, you'll see three metal contacts on the tail light assembly. Nothing seems to be working. the stop light bulb illuminates but doesn't light up when I apply brakes (both sides including upper third light). We just bought a 2000 Jeep grand cherokee. If the headlights are off, the brake lights and directionals work fine. This should be a recall issue, not "go to the dealer and pay the ridiculous rates for repair". Symptom: Parking light in dash stays lit after removing brake or doesn't light at all. Could the problems be related? I've had this vehicle for about a month, and the CarFAX showed no accident. Would that still be the case if they were installed wrong? Since all of the brake lights are not working, it's not likely to be bad contacts (and when I pulled the bulbs from one side, the contacts are very clean). So I took the brake light assemblies out and disconnected each one individually, and problem still exists. Sponsored links. Thanks so much. 1992 Chevrolet C/K 1500 Silverado RWD-Maintenance & Repair. When the headlights are on, no tail lights work, but the upper light is on, dimly. Drivers side rear brake light does not work when the headlights are on. Also check the turn signals. I appreciate any help. If the headlights are on, the tail lights work, directionals work, but the brake lights don’t work. When the headlights were turned off, the voltage went to zero. The fix: Replace the bulb, switch, or relay. Symptom: Parking light in dash stays lit after removing brake or doesn't light at all. I changed out the bulbs on both sides and it still exists. Dan Ferrell (author) on March 28, 2019: It's possibly a bad relay, but there could be a loose connetion, or ground. Join our community to discuss the Jeep Patriot & Jeep Compass. 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. Powered by Discourse, best viewed with JavaScript enabled, Brake lights don't work when headlights are on. Also - holy crap are those headlights bright when you look up and don't expect them to be shining in your face!! Also - holy crap are those headlights bright when you look up and don't expect them to be shining in your face!! Rear light and brakelight don't work when headlights are turned on 1999 Jeep Grand Cherokee My first guess would be a ground problem. Patriot Headlight Not Working / 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. Thanks! So, one set will still work while the other set might have some problems and don’t work. 1 ANSWER. Having similar issues I replaced the back up light and the turn signal bulb but they still dont work. However, my running lights work just fine. 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. 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. If headlights are off, brake lights work fine. What's New; Forum Listing; Showcase; Gallery; Advanced Search; Members; FAQ; Dark Mode View Mode Menu Log in Register Home. 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. Electrical and Audio. I have checked fuses (fine) bulbs are good. Lights. 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. If the headlights are off, the brake lights and directionals work fine. I disconnected both and put a volt meter to the wires. However the dash, tail and parking lights still do not come on. Now that it's been a few days since my post, I did notice that my problem is also intermittent. Anyone have any advice on how to fix this problem? These are conductive surfaces that help the passage of electricity. Most common problem sources include bulbs, wires, connectors, fuses, flasher units, and switches. High beam headlights don’t work or low beams don’t work. I’ve noticed on my trailers with LED’s that some of the lesser-quality LED’s are very voltage sensitive. 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? VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Hi guys I have a 2006 commander Hemi. There may be a few electrical problems, but the critical issue at hand is the brake lights. The contact stated that when the headlights were turned on, the brake lights would not operate. The second click should and does activate the headlights. JEFASOLD [OP] Member. The Hazards and the turn signals do not work. I went to the dealership multiple times and after paying far too much $ … Find answers to all your Jeep Patriot technical questions. All functions worked as expected before the LEDs were installed. 54cj3b. 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. Problem: Brake lights do not work.Need help diagnosing the problem so I can pass vehicle inspection. 2000. Yes, I typed 24 when I meant 23 on the original post regarding the fuse. 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