HOW CAN I FIX HEADLIGHTS THAT GO OUT AFTER THE CAR IS RUNNING FOR 10 SECONDS

  • Tiny
  • mikegvw
  • 1999 Toyota Corolla
  • 270,000 miles

I have a 99 Corrolla VE that has an electrical problem - the headlights, which normally are on all the time once the engine is going, turn on when I start the ignition, but go out after about 5-10 seconds. It's like a switch is being thrown. The lights don't turn on at all unless I get the engine running first - (I think they used to come on if I turned the electical stuff on with the ignition and then flipped the lights on). They always stay on about 5-10 seconds then switch off while the engine is running.

This problem was preceeded by the dash (odometer, etc) not completely lighting up. I've heard about a possible relay in the body control module (BCM), but don't know how to find the module or relay related to this problem. Any help is appreciated.

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Thursday, December 22nd, 2011 AT 11:04 PM

2 Replies

  • Tiny
  • rasmataz
  • Member

Check and test the main daytime running relay and also the DRL relay in the engine room.

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Thursday, December 22nd, 2011 AT 11:19 PM
  • Tiny
  • mikegvw
  • Member

Thank you for the great info - from the schematic it looks like the Daytime Running Light Relay is accessed on the passenger side from underneath and behind the glove compartment? I did locate the DRL relay next to the radiator. Thanks again.

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Thursday, December 22nd, 2011 AT 11:40 PM

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