What's the mercedes sprinter rear door lock problem?

The most common reason for the Mercedes rear door lock problem is the door latch or the actuator motor. If the door latch is broken or loosened, then the door will not unlock. The door lock actuator is an electronically controlled motor that automatically locks, or unlocks a door, trunk, or rear hatch. This works when the driver or passenger pushes a lock/unlock button on any door panel or remote. It is provided on all the doors. With a faulty actuator motor, the door may be locked or unlocked sometimes, but will not work at all times. In this case, You should replace the affected actuator. The replacement will cost between $300 and $350.