NOT KNOWN FACTUAL STATEMENTS ABOUT MERCEDES KEYS

I would Examine battery voltage, if much too low the motor is not going to crank. You may have a parasitic attract draining the battery. - Nick at Pelican Components picadorhello there I am possessing the same trouble with my 2011 w204 [c300 Activity 4matic] I changed the battery yesterday and drove the vehicle fine following that but Once i receiv