SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: PUZZLING TRASMISSION MODULE FAULT

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Old Nov 22, 2023 | 09:17 AM
  #1  
elMacko's Avatar
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PUZZLING TRASMISSION MODULE FAULT

GENTLEMEN,
I CONSISTENTLY GET THE FAULT SHOWN IN THE PICTURE BELOW, BUT THE TRANSMISSION IS WORKING FINE TO ME..!
DOES ANYONE HAVE HAD THIS KIND OF MESSAGE AND IF SO WHAT IS THE ISSUE?
ANY INFO WHERE IS LOCATED THE CAN BUS CONTROLLER?

THANKS ALL....!

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Old Nov 22, 2023 | 01:31 PM
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Not sure if all caps means you’re insanely desperate or your cap button is just stuck.

Anyway; The image of the problem in the post is also blurry. Do you know what the error code is or is that just a trouble alert?
There’s nothing to focus on without an error code but electrical connections starting to fail and oil in the TCU are definitely possible.
Post what codes are in the scans otherwise you will play best guess without knowing a single code
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Old Nov 22, 2023 | 01:53 PM
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Ohhh Harry...excuse me...the caps were on because I thought it is helpful when you are reading the post without reading glasses!

Going back to the code, yes you are right, it is kind of blurred, I would need to get back into the code reader screen to retrieve the code! Stay on medium level alert!
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Old Nov 22, 2023 | 06:39 PM
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P1912?
There is a possibility your personal situation may have influenced your problems but basics still apply.
To rule out specific Can connection issues or physical connection or degradation of the TCU start with erasing the error codes and then start with the Can connection
Good Luck
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Old Nov 22, 2023 | 08:23 PM
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Originally Posted by elMacko
Ohhh Harry...excuse me...the caps were on because I thought it is helpful when you are reading the post without reading glasses!
🤣 No, the letters need to be BIGGER, not just ALL CAPS.
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