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Running Light Issue

Tiny
J2KIRKLAND
  • MEMBER
  • 2007 LINCOLN MARK LT
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 132,000 MILES
My daytime running lights work fine at night but not in the day. They come on in my dark garage, but turn off once I get outside. They automatically come on at night but not in the day. I suspect a photocell issue. Headlights otherwise work fine.
Wednesday, February 1st, 2017 AT 10:49 AM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It may be the photocell or the module is not doing its job. You can check the sunload sensor by holding your hand over it. It is on the left hand side of dash. If lights work then that may be the problem. Otherwise get it scanned by a mechanic.
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Wednesday, February 1st, 2017 AT 12:17 PM
Tiny
J2KIRKLAND
  • MEMBER
  • 2 POSTS
That is what I did and the lights came on. The sensor used to blink red but it does not do so now.
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Wednesday, February 1st, 2017 AT 4:48 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,536 POSTS
This could be a sensor or module problem. I would try the sensor first and then move onto the module.

Please let us know what happens so it will help others

Best, Ken
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Tuesday, February 7th, 2017 AT 1:33 AM

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