R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

Keyless go module "dead"

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Old May 31, 2021 | 02:51 AM
  #1  
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2008 R500 5.5 l
Keyless go module "dead"

Hi,
The keyless go module in the back of the car kind of died after too much water reached the spare wheel compartiment. The spare part is A251 820 33 26. I'm thinking of different options:
-Could it be just a fuse? => Anyone can redirect me to the fuse number for this module please?
-Replacement: is it plug&play or does it need reprogramming?
-Any other idea..?

Thank you.
Pierre (from Switzerland)
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Old May 31, 2021 | 10:41 PM
  #2  
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W163 ML500 w/Kleeman headers (gone but not forgotten); R63
Originally Posted by Prerna
Hi,
The keyless go module in the back of the car kind of died after too much water reached the spare wheel compartiment. The spare part is A251 820 33 26. I'm thinking of different options:
-Could it be just a fuse? => Anyone can redirect me to the fuse number for this module please?
-Replacement: is it plug&play or does it need reprogramming?
-Any other idea..?

Thank you.
Pierre (from Switzerland)
Take a look at the latest R63 forum. Member there brought back a dead keyless go. I believe he got a unit out of an ML.

Regards,
Jerry
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Old Jun 1, 2021 | 12:23 AM
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2006 R500
https://mbworld.org/forums/r-class-w...placement.html
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Old Jun 3, 2021 | 01:04 PM
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2008 R500 5.5 l
Originally Posted by gsfent
Take a look at the latest R63 forum. Member there brought back a dead keyless go. I believe he got a unit out of an ML.

Regards,
Jerry
Thank you for that. I couldn't find this forum though, any chance you can redirect me please?
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Old Jun 5, 2021 | 09:09 PM
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W163 ML500 w/Kleeman headers (gone but not forgotten); R63
Originally Posted by Prerna
Thank you for that. I couldn't find this forum though, any chance you can redirect me please?
Start around #50:

Portland, OR R63 Restoration Thread - Page 3 - MBWorld.org Forums

Regards,
Jerry
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Old Jun 11, 2021 | 07:53 PM
  #6  
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I haz all the dad cars - R63 AMG, a 2018 E63 Wagon, 2022 GLB 250, and a 2017 GLA 250 for the kiddo
Originally Posted by gsfent
That's my car. Once you get it working again I highly recommend relocating the module and resealing the trim seal with 3M Black Super Weatherstrip and Gasket Adhesive.
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Old Jun 25, 2021 | 03:52 AM
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2008 R500 5.5 l
Thank you for that! I found many of these units on ebay, but all have a different reference number, although they seem identical. I'm hesitant to give it a try.
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Old Jul 31, 2021 | 02:49 AM
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S8, SL, and many many others
Does anybody know where is the keyless go module located after the facelift. It's not in the spare well.
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