A class mercedes keyfob sync and no led light working?
 
                help ? having trouble getting the keyfob working, alarm keeps going off and have changed batteries, but led light on fob is not also working. (before i go to MB can anyone help ?) also followed instruction in manual i.e. key in ignition 2. 
back to 0.
hold lock button - 10 secs - still holding - press unlock 5 x
            
             Dony G
            
 January 2011