Cannot lock unlock doors

AWALLACE121

MEMBER
2010 LEXUS SC 430
6 CYL
2WD
AUTOMATIC
40,000 MILES

I was thinking I had transmission issues so I took it to a shop to have it checked out. When I picked the vehicle up the key-fob would not open the doors or the trunk and the top no longer works. They say they did not do anything to it but it worked fine when I dropped it off. I checked all of the fuses and they were all fine. What could be wrong?

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,643 POSTS

Hello,

There are 11 fuses that run the system. Here is a guide to help you test for power and to make sure the fuses are good along with the fuse location and the alarm wiring diagrams so you can see how the system works and which fuses to check (top of diagrams). Also try a different fob the battery could be dead. (Diagrams below)

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

Check out the diagrams (below). Please let us know what you find.

Cheers, Ken

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Friday, October 19th, 2018 AT 12:21 PM

AWALLACE121

MEMBER
2 POSTS

Thanks Ken. Yes the first thing I did was put new batteries in both fobs even though the chance of both of them going at the same time is pretty slim. Both I will work through the system diagrams.
Thanks,
Anthony

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Friday, October 19th, 2018 AT 12:38 PM

KEN L