Headlights will not come on with main switch but flick on with high beam switch and go back off

Tiny
MARIO POSI
  • MEMBER
  • 2000 VOLVO S40
  • 1.9L
  • 4 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 129,000 MILES
When the key is switched on in number two position or the car is running, and I turn on headlight switch the parking lights only come on. The kicker of the situation is that all four lights will come on when I pull the turn signal (high beam switch) but will go back out after releasing, and just parking lights again. The home lights feature works as well when I turn off the key and headlight switch and pull turn signal switch one time they come on for their thirty seconds and go off. What the heck is the deal?
Saturday, October 21st, 2017 AT 4:08 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
There are a handful of fuses that run the system I would check first. Here are some guides and headlight wiring diagrams so we can see what's going on.

If everything checks out there is a central control module that I would check out next.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please run some tests and get back to us so we can keep helping you.

Cheers, Ken
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Monday, October 23rd, 2017 AT 12:55 PM

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