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Where is the taillight relay located?

Tiny
POHEARN
  • MEMBER
  • 2010 TOYOTA MATRIX
  • 2.4L
  • 4 CYL
  • 2WD
  • MANUAL
  • 120,000 MILES
Taillights, running lights, license plate lights not working. Bulbs good, fuses good. No clicking relay sound anywhere when I turn lights on. I don't know where that relay is.
Thursday, March 31st, 2022 AT 11:38 AM

2 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Sounds like you are on the right path. The relay for this is in the driver side junction block. They also run off the tail fuse also so this should be checked as well.

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

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

I am attaching the wiring diagram below for this. I would suggest starting with the license plate bulbs as this is a simple circuit and would be the best to start with because if you figure this one out then the others will most likely be fixed as well.

Please run through this info and let me know what questions you have on this one.

Thanks
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Friday, April 1st, 2022 AT 12:01 PM
Tiny
POHEARN
  • MEMBER
  • 1 POST
Thanks very much Kenney, that really helps a lot! In the end it was a fuse problem. The fuse schematics in the owner's manual didn't match the box. I reworked many combinations methodically and got lucky. Thanks so much. You're wiring diagram really helped my thinking!
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Sunday, April 3rd, 2022 AT 11:06 AM

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