Hi. My spare key is not working with the keyless system. The remote of doors works fine locking/unlocking the doors, but the proximity sensor does not work with the lock/unlock buttons on the doorhandles as well as it does not get recognized by the starting turning thingie on the car (where the key would be). Press down the break, red key light is showing.
What would be the problem. I have tried nothing. I doubt it is the battery because the remote is working. is it possible to pair it with the car in some way?