This turns out to be one of the most common reasons for a car lock to stop working. In this case, all you have to do is replace the key fob battery. However, if changing the battery doesn't help, the key fob may be faulty and you should contact the dealer for further key fob tests.
Reset The System. Simultaneously hold the open and the lock button down for 60 seconds. This should reset the system. If it worked, the interior car lights will go on and off. You may even hear the horn beep. If this did not work, then use the key to unlock the car. Get in it and drive it. Sometimes just having the key in it and driving it will
Step 3: Check the Central Locking Fuse. Remove the metal key from the keyfob and use it to unlock the doors manually. Next, you need to check the fuse for the central locking circuit. Not only that, but also look at the fuse for the Antenna Module and AAM.. Because your MB receives the lock / unlock signal via the antennas installed on your car, a bad antenna module fuse can also cause the
Managed to get the door open. The manual says turn the key anticlockwise which did not work. Turning key clockwise did open the door but central locking not working on drivers door!! The manual seems set up for left hand drive cars. Is this the same for the fuses. There is a fuse box in front of each door.
4. Now remove the window/lock control module, the back is free but the front has a plastic lip so lift the back up and pull towards the back of the van. 5. Remove the clips that attach to the lock and to the window controls (these can be a pain) 5. (Optional) Remove the bracket that held the window/lock control module. Solutions: The damaged circuit must be replaced to achieve the proper functioning of the central locking system. But before that, we need to find out the default sensor and look for the reason why the sensor defaults. This data will furnish the root cause to eliminate any short circuits in the future. 4. 4. Consider the solenoid. If the other doors work, the problem could possibly be the door lock solenoid. If this is the case, your regular mechanic can diagnose the problem. Then, if necessary he or she can remove the car door panel and replace the solenoid. 5. Defrost the lock. To check an individual lock mechanism, work the door lock manually Q2eI.