2010 E500 CAB The drivers seat has stopped moving forward when the seat back is moved to access the rear seats. The seat memory is ok and the passenger seat is working ok. Will this fault show up on ICarsoft. It could be a micro switch on the seat back. Any idea where it is located?
Maybe swap out #4 plug with another and see if the fault follows. Sometimes a failed plug can short out a new relay so it could be the relay again. Maybe a check on a Star machine would be better to confirm.
Make up a solution of acetone and Auto gearbox fluid. Mix well and dribble in with a syringe. Run the engine for a week. Before trying to remove the plugs ensure the engine is hot. As previous very gently torque tighten and then loosen. If no sign of movement soak again. Take time I had to soak...
It could be the air con pressure sensor. It is located on the condenser and costs about £40. It will need the aircon degassed to change. Best thing is to have on a star machine to confirm. Cheaper that changing out parts.