Question about 2007 Mercedes-Benz ML320 CDI

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I do I reset the alarm/door locking system

When I attempt to unlock or lock the door using the remote key it does not work. I tried to syncronize the remote key but it only locked the doors but did not unlock. I have to use the key manually. I changed the batteries too.

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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.

Posted on Feb 17, 2009

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Not sure about yours, but many will reset by: turn key to "on" and wait 15 minutes or so; shut off, then try to start.

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I used csorb's instructions to reprogram a master key for my 2000 Lexus RX300. The ignition works perfectly, but the doors don't lock or unlock.


Hi!!
I believe your alarm is in the PASSIVE MODE, here is how it works.

PASSIVE MODE Setting (Arming) Anti-Theft System The system will automatically set 30 seconds after following methods are performed: Remove ignition key from ignition switch. Exit vehicle, and close all doors. After performing this, anti-theft indicator on left side of instrument panel will light continuously for about 30 seconds. After 30 seconds, anti-theft indicator will blink once per second. When system is set, doors cannot be locked or unlocked using door lock control switch.
CANCELING THE ALARM AND REPROGRAMING MAY SOLVE YOUR PROBLEM.
Canceling Anti-Theft System Setting (No Alarm) When system is set (armed), but alarm is not sounding, use one of following methods to cancel system setting:
  • Unlock left or right front door using key.
  • Unlock all doors using remote keyless entry system.
  • Insert key in ignition switch and turn to ON position (this is operative only when anti-theft system has not been triggered).
HERE IS HOW TO REPROGRAM THE ALARM IN CASE YOU NEED TO RESET IT.
PROGRAMMING
PASSIVE MODE NOTE:Initial mode is passive mode off. If there is a different signal in middle of programming, signal is invalid.
Programming Passive Mode Off
  • Remove ignition key from ignition key cylinder. Ensure all doors (including back door) and engine hood are closed and unlocked. Perform all of following methods within 30 seconds:
  • Lock or unlock any door with key or remote keyless entry system.
  • Open driver door.
  • Lock and unlock driver door lock knob 3 times.
  • After performing this, system should start force lock after 2 seconds. Perform all of following methods within 20 seconds:
  • Unlock driver door lock knob.
  • Close and open driver door 2 times.
  • Lock and unlock driver door lock knob.
  • After performing this, system should start force lock after 2 seconds. Passive mode should now be off.
Programming Passive Mode On
  • Remove ignition key from key cylinder. Ensure all doors, engine hood and luggage compartment door are closed and unlocked. Perform all of following methods within 30 seconds:
  • Lock or unlock any door with key or remote keyless entry system.
  • Open driver door.
  • Lock and unlock driver door lock knob 3 times.
  • After performing this, system should start force lock after 2 seconds. Perform all of following methods within 20 seconds:
  • Unlock driver door lock knob.
  • Close and open driver door 4 times.
  • Lock and unlock driver door lock knob.
  • After performing this, system should start force lock after 2 seconds. Passive mode should now be on.
If you need further assistance, please provide an email address to send more info on your security system
Good Luck!! A 4 THUMBS UP rating would be greatly appreciated for this solution. Thank you for using FixYa!!

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1 Answer

Used the key to unlock door and alarm started going off. put key in ignition to start, but wouldn't. removed battery cable, do to neighbors, and the alarm keeps sounding. how can I shut it off? just...


With the drivers window down, and the doors closed. and locked connect the battery and lock and unlock the tailgate with the key, you need to unlock it twice to unlock the doors and turn off the alarm. If the locks are working like thier supposed to the drivers door will be unlocked and opening it won't set off the alarm. the truck should be back to normal. If not disconnect the battery again. Drivers window down. Put the key in the switch and turn the key on to the run position. With all the doors closed connect the battery. connect it good and don't bounce it around. If the battery casbles aren't clean clean them good so it'll connect good. If it still is alarming then the doors switches are likly. Or the door locking motors. You should be able to lock all the doors ( including the hatch) by hand and get the system to reset. Try it all again using a different door to double unlock as a lock switch might be sticking. If the system can't verify that all the doors are closed and locked it won't reset. If you connect the battery wihg the key turned on the system thinks it's already running and appeares to be in the unset mode.

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1 Answer

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programing a Nissan remote , is hidden secret by Nissan Dealers. As a Nissan Technician i will share it.

Just get in your vech , close all doors. Using your power lock switch , lock all doors. After doors are locked take your Ignition Key and insert it and remove it from ignition switch in a slow fashion , but consitant pace. (97 and earlyer are fast) When you see the hazzard lights flash, put key in ignition switch and turn to the On postion .. Do NOT CRANK or you will have to Start over .. After in the On postion .. Hit the Lock button on remote... Hazzard lights should flash..( note..you have to reprogram all remotes when adding a new one , if you don't your old remotes will not work ) If your doing just the one , turn igntion switch off and unlock door and get out and try it. If you are doing more than one. While still in Vech with Key on . After you hit the Lock button on Remote and hazzard light flashed .. with key still on .. use master lock switch unlock doors and relock and then hit Second Remote, Lights should flash again , repeat if adding a 3rd remote.. after done just turn key off and unlock door and get out and try.

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1 Answer

Locking mechanism is broken on driver's door.


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1 Answer

Keyless remote


Disconnect the battery from your car (negative cable only) overnight. Make sure you have your radio reset code before doing so.

Then reconnect after 10 hours, and make sure you have remote handy as alarm may go off. Then if that doesnt fix it, go to driver door, then insert master key, pull up on handle first all the way and hold it. Then turn the key slowly all the way so the doors unlock and continue turning the key. This will reset the central locking system as yours may have gotton stuck. then remove key let go of handle, open door and try to lock and unlock doors from switch inside car.

Then try remote. It should work, this is what the dealer will do and charge you about $350...if it doesnt work order a new remote b/c yours may have become damaged by liquid or dropping?

Have a great day,

Thanks,

Mark

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There are switches on the door lock cylinders that are supposed to shut the alarm off when you use the key,but they go bad allot. you could try unlocking the passenger door first, since that one usually gets less use and is less likely to go bad. Otherwise you can disconnect the alarm module, it is located behind the glove box.

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