Left low beam light went out while driving

Tiny
SEBASTIANTUDON
  • MEMBER
  • 2007 JEEP GRAND CHEROKEE
  • 6.1L
  • V8
  • 4WD
  • AUTOMATIC
  • 117,600 MILES
So today as I was driving my left low beam bulb went out all the other lights were working. So I had to use my high beams but as I got home and checked the light was working again. Any ideas?
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Friday, February 14th, 2020 AT 5:59 PM

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Tiny
KASEKENNY1
  • EXPERT
The nice thing with this is it is one of three things because you have a single wire driver for each the high and low beam then a shared ground. Since you said the highbeam was working when the low did not work, we can assume the ground is good. However, it wouldn't hurt just making sure it is tight.

From there it can only be the bulb is failing but it is unlikely that it will fail then start working again. So that leaves a wiring/connection issue or the integrated power module. If it were me, I would just get a new bulb because they are pretty cheap and then when the connector is off you will want to check and make sure there is no water intrusion or any green growth on the terminals. If you are not sure what you are looking for then before you replace the bulb just gently wiggle the connector on the bulb and see if the headlight turns on and off. If it does then you have a connection issue.

If all else fails, then I suspect you have an issue with the integrated power module but I would think this is a connection issue. Let me know if you have questions. Thanks
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Friday, February 14th, 2020 AT 6:15 PM
Tiny
SEBASTIANTUDON
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Thanks for the help. I ll try and see if the connection is bad.
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Friday, February 14th, 2020 AT 6:38 PM
Tiny
KASEKENNY1
  • EXPERT
Sounds great. Just want to stress that you don't need to wiggle it aggressively. You are trying to replicate how much it would wiggle when hitting a bump on the road. It is not going to move much at all. If you grab it and move roughly then you may actually reseat the connector only to have it work loose again in the future.

Will wait to hear back. Thanks
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Friday, February 14th, 2020 AT 6:52 PM
Tiny
SEBASTIANTUDON
  • MEMBER
Makes sense now. I may have hit a bump when one of the lights went out so more then likely it s a bad connection.
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Friday, February 14th, 2020 AT 6:55 PM

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