Comfort access trunk question

[tduhamel]

I have a 2007 M6 cab with comfort access (keyless entry/start). My problem is this...there are two keys, yet I can only open the trunk by hand (keyless) with one of them. They both have new batteries, both work to open doors and start vehicle keyless, but only one will allow me to get into trunk. They both also work with the remote buttons. I know that each key will remember certain settings such as seat position and radio channel favourites, so is there some setting to not allow trunk entry that one of the keys has memorized? Any ideas?

[snowball]

There is a replaceable battery in our comfort access keys that needs to be replaced once in a while. I would try that first. You have to remove the regular key to get to the clip to open the battery door.

I also had to do a car battery reset once to reset my comfort access keys. Open your trunk and disconnect the negative terminal from the battery. Leave this unhooked for at least 10 minute. be careful NOT TO CLOSE THE TRUNK! the release is electric so you will be stuck with a disconnected battery and no way to open the trunk. After the battery reset, the key should work. Don't know if this is your problem, but it worked for me.