Originally Posted by BCMPOWER
I believe only service information and check control functions are stored on the key, and the key has to be in the ignition. For many with comfort access that rarely happens. I found this out taking my car for service my Service advisor read the key and nothing was on it. After a quick insertion into the ignition it was spewing out fault codes!
Okay, I wasn't sure if info was sent to the key wirelessly. The manual is not very clear.