"hard coded" key
Thread Starter
Newbie
Joined: Dec 2024
Posts: 1
Likes: 0
From: Pacific NW
2018 E400 Sedan, 2019 Hellcat Redeye
"hard coded" key
Hello,
I just bought a 2018 E400 that unfortunately came with only one key.
I have been told that my year has a "hard coded" key to my vehicle's vin. (which I believe)
Dealerships use this explanation for not programing a used key.
There are many aftermarket companies selling USED keys (for my year car) claiming that a locksmith with
advanced equipment can erase and reprogram a key for me
What is the truth?
I don't trust the dealership.
I just bought a 2018 E400 that unfortunately came with only one key.
I have been told that my year has a "hard coded" key to my vehicle's vin. (which I believe)
Dealerships use this explanation for not programing a used key.
There are many aftermarket companies selling USED keys (for my year car) claiming that a locksmith with
advanced equipment can erase and reprogram a key for me
What is the truth?
I don't trust the dealership.
Super Member
Joined: Feb 2007
Posts: 613
Likes: 295
From: Republic of Texas
W203 W212 W211 R53MCS
The only way you will get a key for this car is with the dealership or an independent shop that has official Xentry software and proper licensing. Otherwise, no aftermarket tool can program new or used keys.
MBWorld God!
Joined: Dec 2019
Posts: 32,505
Likes: 6,347
This is correct, hence why it is so expensive too. It is to help prevent theft although it doesn't do much, better than nothing I guess but at a cost of a much more expensive replacement key.
Newbie
Joined: Oct 2024
Posts: 1
Likes: 0
Key Codes
Hi, I recently bought an 09 CLK Convertible that came with only one key. The dealer wanted $1000 for a spare key. I managed to find a locksmith who was able to make a duplicate fob for me at a fraction of the price of a new one from the dealer but he wasn't able to do a proper trace on the hard key blade. The locksmith suggested I get the actual hard key blade code from the dealer and he will cut me a new blade. The dealer refuses to supply me with the code even if I showed proof of ownershipunless I pay the $1000 for a replacement. Is there any other way other than the dealer to get the hard key code so I can get a blade replacement for my spare key?
