Taillight not working, brake lights and turn signal do work?

Tiny
GWLEWIS2124
  • MEMBER
  • 2008 MITSUBISHI ECLIPSE
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 113,000 MILES
I have had issues with my car for about three or months now. I tried to change the bulb and that didn't work. Then my car stopped staying charged. I took it to a mechanic who told me it was charging to 15v instead of 12. However, he didn't fix anything, and the car broke down on me again. I recently bought new taillights for both sides and my passenger side taillight doesn't work. However, the brake lights and turn signal work fine. Please help.
Saturday, July 16th, 2022 AT 10:26 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,348 POSTS
There is a front ECU that sounds like it is bad, but to be sure you can get a CAN scanner from Amazon for about $30.00. here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

Here is a scanner link:

https://amzn.to/3o41KcZ

I would check all fuses first though #20 #21 in the under-hood fuse panel here is a guide and the taillight wiring diagrams so you can see how the system works. Check out the diagrams (below). Please let us know what happens.

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Sunday, July 17th, 2022 AT 11:40 AM

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