Hi all

I have a 1999 S500 with locking problems neither of the locks works unless I used the key to open the car but only the driver door unlocks. the trunk also does not open from the inside. and if I used the remote the hazards light flashes but it doesn't lock or unlock the car. I have check al of the fuses and they are okay any toughts what should i be looking also the head rest button doesnt work..

thanks in advanced