Blade key was working fine for several months, now would not totally release drivers door had to get roadside assistance to manually unlock. Take the blade key, and press it into the slot.
In this article, we consider the second-generation Mercedes-Benz CL-Class (C215) and the fourth-generation Mercedes-Benz S-Class (W220), produced from 1999 to 2006. With the door open, here is a view of what the door should look like with the metal panel removed and the a lock in place. Some can be fixed rather easily by replacing a rubber coating surrounding them. When the door lock system on a W123 develops leaks, it can cause it to work slowly or not at all. Locks will again cycle to indicate end of programming mode. Remove the key from the ignition and attempt to remote start your vehicle. It just seems to be the lock cylinder that is the problem. Pick up your remote door lock transmitter and hit the 'Lock' button within 30 seconds of entering the programming mode. Benz EIS Trouble is a common trouble in below Benz vehicle models: Before 2004: W220:S280,S320,S350,S500,S600.