Hi Guys, As above, a C class 204 that locks/unlocks the door's, but when you put the key in the ignition there is no sound of electronic ulnocking of the steering column and you cant turn the key? any ideas? Have not tried the spare key as it isn't available to hand. could it be a key fault, or somthing to do with the electronic barrel not recognising the key i.e. lost its programmed signal etc?