The car is full of digital electronics and switching duties carried out in many cases by black boxes via unconventional circuits; often an oscilloscope is more use than a voltmeter in fault finding and a deep understanding of the systems involved.
A deal of detective work is likely to be needed - observation. When the lights come on do they come on cleanly or is there some flickering?
When they come on must they be switched off or do they go off without interference?
Do the lights normally illuminate when the central locking/alarm/immobiliser is armed?
Studying the wiring diagram should reveal the pathways by which a fault could send current to the headlamps. Often, for instance, the headlamps can only be operated when the ignition is switched on but such things as the horn, hazard lights, interior lights, parking lights and headlamp flashers are typically on a battery circuit. If this is so it increases the chance of the problem being with the wiring of the multiway switch (indicator, flasher, dipswitch)...
Thanks for the response! They usually stay on but will sometimes randomly turn off on their own. They do come on cleanly. I just removed the fuses to the high beams and my regular lights are now coming on randomly. The lights must be manually engaged to turn on normally.
I can only repeat the need to study the wiring diagram to become familiar with the circuit and continued observation to discover any pattern. Disconnecting or isolating (removing fuse) various circuits might lead to further clues.
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SOURCE: 1999 Hyundai Elantra - Occasionally (always at the
that is correct, the multifunction switch on the steering column is the problem on this car.
SOURCE: Hi - Last night while driving at night I realized
it might be that one was out and not noticeable intel the other one went out you can check that by lookingin to the light bulb it self and check fuses and the relay
SOURCE: 2002 Buick Regal High Beams go out
light switch is probably defective - more power is being used on hi-beams causing breakdown in switch - get replaced
SOURCE: Low beams only quit high beams work, park lights
yes there is but it is probably da bulbs
If you need further help, I’m available over the phone at https://www.6ya.com/expert/michael_00678fd4800d19c5
SOURCE: RX330 high beams do not work
Check the fuse to the headlight relay circuit which is inside the engine room, Also it can be a failure of the cluster switch.
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