Question about Mercedes-Benz ML-Class

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2001 mercedes benz door lock problems; I just got this high mileage used car. My only key's electronic features do not work. I can unlock all doors with manual key from driver's side, but the car does not lock back up the same way. I push the lock botton from inside and lock the driver's door by the key, but the back (trunk) door does not lock. Can it just be the connectors or is it the lock solenoids, or anything else? How much will each problem cost. Where do I begin to test this out? Many thanks

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I have a 2001 ML 320. The issue I am having is once I am stop and accelearate the locks just click, click. Also, I am having issues with the heater/ac working. Please help.......thanks.

Posted on Dec 12, 2009

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Test the batteries in your remote transponder. They have to be 3 volts a piece. You can even go to auto zone and they will test them for free. Start there. You will have to resynch. the transponder after you replace the batteries. Your owners manual will tell you how to do this. The best way to diag.if problem still exists is to pull codes and then function test with a s.d.s. tool. Hopefully I have been helpful.

Posted on Oct 07, 2009

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My problem is that key remote control works only very close to the car i change the battery still the same problem i don't have a spare key to test also petrol door lock and unlock not working wit


Your keyless remote is equipped with 2 different systems. There is the RF system (long range, lock control only) and the IR system (short range, locks and convenience features such as remote window roll-up and roll-down). It sounds like your RF system isn't working. The only way to test the system, that I know of, is with a Mercedes scanner. It is likely a bad remote.

Feb 02, 2013 | 2001 Mercedes-Benz C-Class

1 Answer

Keyfop wont operate drivers door on 2001 c200


do you mean the drivers door won't unlock or lock ? does your spare key work ? does it work from the switch inside the vehicle ? does the little red light flash on the key ?

Dec 29, 2012 | 1998 Mercedes-Benz C-Class

2 Answers

2001 Mercedes 430 Doors won't lock-trunk won't unlock--OBDII reads 888 Sounds like fuse. Can you help?


Hi, if all of the locks on your Mercedes fail to open (or close) first check your key fob to make certain that its battery is working. Replace the worn out battery, if necessary. If key fob is working, you may have a faulty key fob, which can be repaired or replaced by taking it to your dealer.
If just one lock won't open on your Mercedes, then the problem may rest with broken wiring, a bad solenoid, or perhaps with a blown fuse. Check your fuse box first to determine if a blown fuse is keeping the lock from working. If so, replace the fuse.
You likely have a shorted door lock actuator, which you can replace with a new unit for the lock that is not working. If a door unlocks, but will not lock again, then replace the door switch.

Besides there is not OBD II 888 code, i have never heard or seen it before...

Feb 07, 2011 | 2003 Mercedes-Benz S-Class

1 Answer

My 1998 Mercedes Benz C 280 key wont turn. Was working perfect. The remote stop working so I manually open door, but electronic key wont turn.


sounds like the battery in the remote is old and dead and needs to be replaced. ( could also be the electric door lock fuse ).
if you are also experiencing trouble with your door locks themselves turning - then try and spray some teflon or silicone base lubrication in all the locks to wash out any dirt or debris.

c...

Jan 05, 2011 | 1998 Mercedes-Benz C-Class

1 Answer

I have a 1992 mercedes benz 300ce and i cant get the alarm to shut off. ive tried unlocking and locking it again with all keys but i cant get it to shut off


You must turn the car on after alarm goes off. Door locking and unlocking dont work after the alarm goes off. Its like you break a window to get in anyone can lock or unlock a door thats why its tied to the ignition.

Jul 21, 2010 | 1992 Mercedes-Benz Mercedes Benz 300 Class

1 Answer

C240 mercedes key wont turn seems locked... I went to my car used fob doors unlocked when I tried starting i inserted the key in the ignition and the fob will not turn seems locked..now all of a sudden the...


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.

Jan 12, 2010 | 2001 Mercedes-Benz C-Class

1 Answer

Remote key not working to unlock doors and car won't start on my 2001 ml320


try changing the battery but to be honest mercedes have a real problem with there kyes if they loss the alarm code the dan things wont open the doors,,try to reprogram your key to the car alarm,

Nov 15, 2009 | Mercedes-Benz ML320 Cars & Trucks

1 Answer

My 2001 ML320 Rear Door does not lock or unlock


probably a leak in the air line to that door, therefore not reaching pressure.
The central locking should work on compressed air
would need to strip door panel down and check lines and listen for air leaks when operated

Oct 21, 2009 | 2002 Mercedes-Benz C-Class

1 Answer

Locking problem mercedes e320 year 2003


Hi, You need to replace the door lock assembly. They go bad often on these vehicles. The door panel needs to come off to access the assembly. Not very easy to do unless you know what you are doing.

Apr 09, 2009 | 2005 Mercedes-Benz Mercedes Benz E320 Cdi

1 Answer

I do I reset the alarm/door locking system


there could be a problem with the actual remote, get it checked, if you do need a remote plz get it from a mercedes main dealer.

Feb 17, 2009 | 2007 Mercedes-Benz ML320 CDI

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