[Confirmed] 2021 Mercedes Benz S Class stuck in anti-theft mode - code lost

4669 views - Last reply: February 24, 2025
This topic is closed for new replies.
Netsurfer
Member since October 2022 • 118 posts

Where's the key code hidden on a 2021 Mercedes Benz S Class for key programming?

Posted on February 24, 2025
Adminbot
Staff Member • 1251 posts

Hello! We've developed a VIN-based tool to help you get your key code for the 2021 Mercedes Benz S Class. Check it out here: VIN Key Code Generator.

Posted on February 25, 2025

Replies (4)

Yellowsub
Member • 67 posts

Following closely—this could be the fix I need for my 2021 Mercedes Benz S Class.

February 25, 2025 Reply
Blackbelt
Member • 123 posts

Got a dead key fob for my 2021 Mercedes Benz S Class. Need the code badly.

February 26, 2025 Reply
Rocketman
Member • 116 posts

I can’t believe I found this. Been stuck with my 2021 Mercedes Benz S Class too.

February 27, 2025 Reply
Outlawstar
Member • 74 posts

Using this on my 2021 Mercedes Benz S Class now. Hope it works.

February 28, 2025 Reply

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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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