This is the second time I have had problems with the headlights on my 98 Corolla. The first time, they did exactly the opposite of what they were suppose to do, they would come on during the day and turn off when it got dark. I took it to the dealer and it ended up being a ground attached to the DRL. However the dealer did not completely fix the problem. After close to $400 the lights would work at night but if I did not manually turn them on before the sensor did they would flicker and make a clicking noise. I could live with this because all I had to do was turn them on and the flickering would stop. Now however the headlights don't turn off at all. Not even when the car is turned off and the key is out of the ignition. I don't understand, the lights no longer flicker but I can't figure out a way to get them to turn off. I have been unplugging the battery to keep my car from dying but I fear this will cause bigger problems. Please HELP!
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Re: Headlights won't turn off, ever.
Sounds like a bad headlight switch. Also was there an alarm system on it at anytime? Alot of people hack all kinds of wires installing them improperly. I'll bet that's the case but I could be wrong. Let me know.
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Headlight switch is probably bad if it`s working intermittently. You should have daytime running lights, headlights, and high beams. I`m sure they are all on the same handle. That handle has seen a lot of use. Good news is some of these are available in the aftermarket special order from a company called HELP.
Not sure about your question. It could be read two ways.
Way #1: (When I put my emergency lights on it effects my headlights.)
If there is an effect, you could have a shorted ground wire, allowing current to find another way into the circuit. Visual inspection might uncover the problem.
Way #2: (When I put my emergency lights on, should it affect my headlights.)
No, If you turn on your emergency flashers, there should be no effect on your headlights.
Electrical problems can be very difficult and costly to diagnose.
Try googling your exact problem and maybe others have had the same problem.
Your Corolla has daytime running lights (DRLs). A photocell determines whether it is day or night. Your DRLs turn on automatically in daytime without you operating the light control ("headlight") switch. Your DRLs are actually your headlights on low beam. At night, the photocell senses it is dark and disables the DRLs. When you set the light control ("headlight") switch to HEAD, the head relay closes and the headlights should turn on. Since they don't, I suggest opening the engine room junction block and checking the 40A MAIN fuse and the 10A LEFT HEAD (UPPER) and RIGHT HEAD (UPPER) fuses. In engine room relay block 5, check the 10A LH-LWR HEAD and RH-LWR HEAD fuses. Replace any blown fuses and the headlights should be working normally again
It sounds like an electrical problem. The dash lights and the headlights are on different circuits. If one crosses the other, it can cause problems. You might have a ground wire loose. All your ground wires are black. Can you test the wires? Something is causing a short. Break in wire?
I have an 03 corolla and in 04 we had this same problem. It was really bad when the temps would dip very low(appeaered to be cold sensitive). I would jump-start the car and let it warm up and the problem would go away. The dealership replaced the module that worked with the sensor(the sensor for the auto headlights) and since then we have not had this problem. Also from my understanding there was a manufacturers release on this, but not a recall. Hope this helps.