CL-Class (W216) 2007-Present: CL 500, CL 600

CL 550 left rear window problem

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Old Aug 13, 2024 | 04:58 AM
  #1  
Basso1001's Avatar
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From: Arnhem
CL500 C216
CL 550 left rear window problem

My driverside rear window stopped working and this is the code 9066 memory overrun while writing to eeprom. Tried a new module, software is updated.
Anyone an idea?




Last edited by Basso1001; Aug 13, 2024 at 05:34 AM. Reason: car type added
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Old Feb 16, 2026 | 11:21 PM
  #2  
Bobby Valchev's Avatar
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Sl55 amg
Originally Posted by Basso1001
My driverside rear window stopped working and this is the code 9066 memory overrun while writing to eeprom. Tried a new module, software is updated.
Anyone an idea?


Hi,
How did you update the software?
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Old Feb 17, 2026 | 01:40 AM
  #3  
Basso1001's Avatar
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CL500 C216
It is already solved, bought another doormodule and everything worked. I programmed it with my Xentry offline.
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Old Apr 14, 2026 | 09:32 AM
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W212 e250
I am a bit hesitant to ask it here, but I have a new door module and tried to program it with Xentry offline but did not manage to do this yet. It asks for the CD. How did you do it?
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Old Apr 14, 2026 | 09:49 AM
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From: Arnhem
CL500 C216
I have the firmware dvd's from 2008 till 2017. What year is your car? Then i can send you the firmware wit wetransfer.

Bas
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Old Apr 14, 2026 | 10:01 AM
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W212 e250
Hi, 2007, would it still work?
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Old Apr 14, 2026 | 10:16 AM
  #7  
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CL500 C216
What was the problem and what fault codes?
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Old Apr 14, 2026 | 01:01 PM
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W212 e250
Originally Posted by Basso1001
What was the problem and what fault codes?
The rear battery was draining continuously and I narrowed down the issue to the RH door module. I installed a second hand module from a car from the same year and it resolved my draining problem. All functions from the door module are working, except the mirror adjustment. No fault codes. The mirror adjustment buttons are fine, as well as the mirrors themselves. I just need to re-program the module I think.
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Old Apr 14, 2026 | 01:12 PM
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Basso1001's Avatar
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CL500 C216
I would try that. I you give me an email adress i will send you the firmware form the 2008 and 2009 models. That is the latest firmware you can use in the 2007.
You can send me a private message
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