[Working] Trying to flash ECU on 2012 Mercedes Benz R Class, code mismatch error

3639 views - Last reply: February 11, 2025
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Need my 2012 Mercedes Benz R Class's key code to program a new transponder key

Hello! We've developed a VIN-based tool to help you get your key code for the 2012 Mercedes Benz R Class. Check it out here: VIN Key Code Generator.

Replies (6)

Been searching everywhere for help with my 2012 Mercedes Benz R Class's key code.

Got a dead key fob for my 2012 Mercedes Benz R Class. Need the code badly.

I’ll try this and update how it goes with my 2012 Mercedes Benz R Class.

Waiting to see if this will work on my 2012 Mercedes Benz R Class as well.

Great info! Needed this for my old 2012 Mercedes Benz R Class.

Using this on my 2012 Mercedes Benz R Class now. Hope it works.

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