I hav e av 01 ML 270 and problem with the central locking system.
Suddenly it stoppet working og the key.
I can neither lock it or unlock the car with the key. Manually with the key insert in the door i can lock the front drivers door offcours.
Evrything else seems to work ok -thinking about the central locking knob with in the center between the seats, it also lock all doors when i start do drive.
it is only the key witch is not working.
I have tryed to change batteris and re program the key but that did not help

Anybody ho can help me???

 

Are you using this sync process?

 

Not exactly -> i will try this one

 

OK - This was working -> my central lock system is now ok
Thank you wery much for this help.