ratbuntir

I just purchased a 2012 c250 with keyless go and the spare key was not working according to the prior owner due to a need to change the battery. I replaced the battery yesterday but it does not work at all, does any one know how to re-sync or re-program the key fob without going to the stealer?

Plutoe

You just got snookered(cheated) by the seller---need a new 3 dollar battery,wada joke----if your new battery does not work then you either have a bad key or an issue with the central locking system, both of which can be solved when you ask the seller to fix the problem!!