[Confirmed Fix] How can I access my MercedesBenz CClass C 300 Mild's key code to program new keys?

4811 views - Last reply: January 17, 2025
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Where can I get the key code to make a new key for my MercedesBenz CClass C 300 Mild?

Hello! We've developed a VIN-based tool to help you get your key code for the MercedesBenz CClass C 300 Mild. Check it out here: VIN Key Code Generator.

Replies (6)

Waiting to see if this will work on my MercedesBenz CClass C 300 Mild as well.

Crossing my fingers—really need this for my MercedesBenz CClass C 300 Mild!

This trick worked for my buddy's MercedesBenz CClass C 300 Mild. Giving it a go myself.

I’m not alone! My MercedesBenz CClass C 300 Mild is doing the same thing.

Following this for my MercedesBenz CClass C 300 Mild. Please update if it works!

This forum is more helpful than my dealer. Thanks from a MercedesBenz CClass C 300 Mild owner.

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Many cars have a resync procedure: 1) Press lock/unlock buttons while near the car 2) Insert key and turn ignition on/off in a specific pattern 3) Use a sequence of button presses. Check your manual for exact steps - procedures vary widely by manufacturer.
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