Programing ML Key
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
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