It has been quit a few years since I was on here. I have just bought a GLC 300 Coupe my tenth Merc. I Know how to do the key fob thing on my previous cars. I have asked at the dealership but no one seems to know the answer for this MERC :- The instruction manual says to switch the key fob off to the keyless start system is to Quote "press & hold the key button (merc star) with the key button immediately press the key button (unlock) twice in quick succession, the indicator light of the key lights up once briefly and once for a long time" The problem I have is this does not happen. I have put a new battery with 3.2 V into the fob to now avail. does anybody know how to achieve this ?
With thanks
With thanks