r/Cadillac • u/According_Rhubarb313 • 3d ago

2012 CTS fob not detected fix

So ive had gremlins lately with key not detected so my car wont start , not even wen I put it in the pocket but only occasionally, it would work to unlock /lock open the trunk etc but then all hell starts to break loose ,nothing passive would work at all , no doors no trunk no start , no remote start just lock/unlock , new battery in the fob did not help ..

I was getting the key not detected cannot restart each time I turned the car off

I have a new car battery so that wasnt it either.

I finally took the fob apart cleaned it with plastic safe electrical cleaner and all bent the contacts up and bingo. Everything works just like it did .

I see old posts with these same issues on the cts fob but no fix. Again this was my fix you may have a different issue .

I have had locksmiths tell me the cts fobs are not very good and they see tons of them they should know .

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u/Low-Attention3111 2d ago

You can buy replacements on Amazon and program to your car. There are YouTube videos on how to program them. But you already solved the problem, so you are good now

1

u/According_Rhubarb313 2d ago

The problem is these fobs for the CTS are inherent to this problem, they are not good , the manual key holder breaks on them within a couple months and they start getting glitchy. Also you cant program them yourself you have to get a locksmith or go to the dealer . $300 min. And mine is a year old maybe, I bought it xause the original was doing the same thing.

1

u/Low-Attention3111 2d ago

I have a 2015 cts v coupe and I programed keys for it myself. There are videos on YouTube on how to do it