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The other day I found that the key fob would not unlatch the trunk lid. It would not do anything. I replaced the coin battery and it still would not work. I checked the new battery and it is good. I checked the other key fob and found that it too was inop. I installed the checked new battery in fob number 2 and it still would not work. None of the fob functions would work. I have done some searching and it is suggested that the Body Control Module may be the problem. After a number of online searches I have not been able to find the location of the BCM. Any information or suggestions will be appreciated. I find that there are many modules for sale on ebay. Once I find the location is there any test to be done? Are the used modules a good idea? Thanks for any help. Bill Klein
 

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The other day I found that the key fob would not unlatch the trunk lid. It would not do anything. I replaced the coin battery and it still would not work. I checked the new battery and it is good. I checked the other key fob and found that it too was inop. I installed the checked new battery in fob number 2 and it still would not work. None of the fob functions would work. I have done some searching and it is suggested that the Body Control Module may be the problem. After a number of online searches I have not been able to find the location of the BCM. Any information or suggestions will be appreciated. I find that there are many modules for sale on ebay. Once I find the location is there any test to be done? Are the used modules a good idea? Thanks for any help. Bill Klein


You could have the vehicle scanned for trouble codes.

You could also remove the negative battery cable for five minutes, then reconnect it - to see if the key fobs would then work (by resetting the system). Note, if you disconnect the battery - it will erase any stored codes.

The BCM, if replaced, must be reprogrammed with the car’s VIN to ensure it has the proper coding.
 

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Since it doesn't work with either remote, it's highly unlikely they're the issue, but just in case - find someone with an Autel (or similar) TPMS tool. They also double as a remote tester! You just go into the right mode, and start stabbing buttons on the remote. It just says 'signal received' kind of thing, not knowing what it got.
 

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Since it doesn't work with either remote, it's highly unlikely they're the issue, but just in case - find someone with an Autel (or similar) TPMS tool. They also double as a remote tester! You just go into the right mode, and start stabbing buttons on the remote. It just says 'signal received' kind of thing, not knowing what it got.
Thanks for the great info. I have an AUTEL and I'll give it a try to see if mine will do the check. I agree that its unlikely both remotes died at the same time. Billk
 
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