Question about Cars & Trucks
The automatic door lock system activated by the key fob has stopped working, all the doors and boot no longer unlock/lock. we have to do each one manually. reluctant to take into Mercedes garage for diagnostic and expensive repair! any tips to fix?
Have you tried replacing the batteries in the key fobs? They are usually only good for a year or two, depending on usage.
Posted on Feb 13, 2014
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Posted on Jan 02, 2017
I have a 2001 C240 with the same issue. I removed the positive battery cable from the battery and kept it off for 30 seconds then replaced it. Everything was reset and the key worked.
Posted on Feb 10, 2010
unlock the door then press the lock button on remote and hold down for 20/30 secs.manual does say hold button.....
Posted on Mar 02, 2010
Insert key into door barrel or ignition lock and turn key, whilst doing this press the unlock/lock button, the led on the dash should flash to indicate this has initialised the key to the car, then remove key and test operation of remote. If this fails then a new remote plus coding to the car by your dealership is needed
Posted on Apr 29, 2010
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