Programming ML Ignition Key - PeachParts Mercedes-Benz Forum

cjgordon · #1 01-03-2003, 02:35 PM

I purchased a spare key (never used) ML320 key for my 99 ML320. How can I program it to function like my other ignition key? Do I absolutely have to bring it all the way back to the dealer? They were supposed to program it when I picked it up, but never did. It's a very long drive. Thanks in advance for any instructions.

#2 01-03-2003, 03:47 PM

I am sorry that you will have to take your spare key to a MB dealer.

The key code is VIN specific and whats more is matched to the all activity module, so you will have to have the car with you.

It is not a big job, and should only take 10 minutes.

However if you have had the key for some time, change the batteries too.

Regards

Col Tigwell
Dowununder

cjgordon · #3 01-03-2003, 04:11 PM

...for your timely response. I sincerely appreciate the info and will get it done next time I bring the ML in for warranty service.

ILUVMILS · #4 01-03-2003, 08:06 PM

Shame on that dealer for letting someone walk away with a new key without programming it for them.

Gilly · #5 01-03-2003, 10:08 PM

Well, first, I wish the ML questions would be posted at the ML/GWagen/UNIMOG board.
The key may be able to be programmed without the aid of the dealer, i have done it a few times without SDS, it would be worth trying anyways.
The description is given in the owners manual, what you want to try doing is the "remote control synchronization", find this in the index in back of the owners manual. Do what it tells you to do in that section, there are a couple different ways of doing this depending on the build date.
I believe your only problem is the remote control operation, it does start the vehicle, correct?
In most cases, the synchronization involves turning the ignition on, then off, removing the key, holding the lock button down and also pushing the unlock button 10 times, then release both buttons and then pushing either the lock or unlock button. I would try it, it has worked for me.
What the dealer needs to do is essentially the same thing, but with the SDS hooked up and putting the AAM in the "learn new remote key" function, but again, i have seen these keys synchronize just fine without the SDS.

Gilly