Question about 2001 Mercedes-Benz ML 270

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Central locking not working

Passenger door wont lock

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: Central locking

you would have to take apart the door panel and check were the lock rod is their is a rubber copling which needs to be lubricated
with silicone grease,check the operation before you install door panel if is working ok,you dont have any other problem,but if it does'nt work you would need to replace complete latch.

Posted on Sep 04, 2008

  • 137 Answers

SOURCE: 1995 Mercedes Benz S320

sounds like you have a wiring problem in the main lock switch in the driver side door or wires that run from there to the other doors. one of the wires in this system does not have a good enough connection to allow enough current to operate the locks. put another way, the wire itself is introducing unwanted resistance which reduces the current flow. the resistance could be a result of a poor connection at a junction or a section of wire which has corrosion or some other problem which diminishes flow. to find exactly where the problem lies will involve removing door inner panels and making voltage drop tests across connections. works something like this: i started out with 12v dc, i know this component should use 3.4 v (or whatever it is) but now i only have 4 v coming to this next component. so the wire is using some of the voltage. some drop in the wire is normal, but not very much. that is how i would troubleshoot it. you can just check the connections to power and ground, just look at things and make sure you don't see corrosion, wiggle connections and see if it makes something different happen, but you will still have to take the doors apart to do it. hope that helps

Posted on Jun 04, 2009

  • 1 Answer

SOURCE: How do I remove drivers door handle that key will

Central lock dosen't respond ,put the lights are flashing!Where I need to look my problem?

Posted on Aug 22, 2009

  • 510 Answers

SOURCE: Central locking on key not working

Synchronization
Turn ignition switch to position II. Turn ignition switch to position 0 and remove key. Within 1 minute: Press and hold key lock button. Press unlock button 5 times. Remote control should now operate system. If not: Repeat procedure.
Programming
When
Key remote control added or replaced. System malfunction.
How
Keys can only be programmed using diagnostic equipment.
NOTE this only works on ml up to 05

Posted on Feb 28, 2010

merctechniqu
  • 229 Answers

SOURCE: front passenger's on mercedes ml 500 wont lock.

first check the wiring for door lock if all good faulty door lock must need to be replace.

Posted on Nov 17, 2010

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1 Answer

My right side passenger door does not lock automatically anymore. Is there a fuse that operates this.


no all is related to one fuse you can remove the door internal controls and decore and remove center lock motor plug and test two connectors with multimeter with set on 12v and then lock un lock door and check the reading of the multimeter if it read signal then all plugs and wires from central lock control unit to the door central lock unit is okay it this cae you have to replace the door central lock unit with the same if no signal is readed while you lock unlock the door then you have to check central control unit and all wire plus out of it to the door plug

2- you can remove central control unit from driver door and test it in passenger door (usually the same unit ) if it works with lock unlock its then the replaced unit is faulty and needs to be replaced if it not work then check plugs wires from central lock unit (usually found inside driver door ) to the central lock unit in passenger door

3- check signal for said door fro the output of central door unit if no signal then it mean that faulty central lock control unit

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Lock ALL DOORS, Disconnect the Battery... Wait 2-3 minutes and connect the battery and it should reset itself. Make sure all doors are LOCKED...

AND that you have a KEY to open the door in case it does not work.

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1 Answer

My passenger door central locking has stopped


Method 1: Press lock or unlock button 4 times in succession. Method 2: Switch ignition ON and OFF. Within 10 seconds press lock and unlock button in succession.
This is the only manual reset
If this does not work go to your local auto electrician
The probable fault could be central locking activator passenger door

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CHECK THE DOOR LOCKS MAIN FUSE.

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Remove the door pannel and spray releasing oil over the central locking solinoid.That should sort it for you good luck.

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The solenoid is probably finished, it's a 50$ part with 1 hour labour.

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Jeep grand cherokee central locking system


If all the doors do not lock or unlock when using the passenger side switch, then the switch itself is probably bad.   If the passenger side switch locks or unlocks all the other doors except for its own, then the power lock solenoid inside the door is bad or jammed.  If it is jammed, try locking and unlocking the door manually while activating the switch to work its way free.

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