Control module losing coding?
Thread Starter
15 A8L TDI, 03 RS6, 01 S4
Joined: Jun 2020
Posts: 252
Likes: 68
From: Longview, WA
Control module losing coding?
What would cuase a control module to suddenly lose its coding?
My drivers seat memory, massager, heat/cooling all suddenly stopped working. I began troubleshooting and came to a conclusion that the drivers seat control module went bad.
Ok, no biggie, stuff happens. Found a good used one off fleabay and bought it. Few days later I have it in my hands.
Today, I go to make the swap. Decided Im gonna look and save the coding of my old module first. I also take a look at the passenger seat coding and see a big difference in the two. My driver's side was all 1s and 0s, not out of norm, while the passenger side had alpha numeric characters.
I copied the passenger side and pasted it in the drivers side. Coding accepted.
After I went through the basic settings for the seat, viola, everything works.
So, how could my module lose its code? I have a newish battery, replaced last year. Haven't had any other issues with the car. Any ideas?
My drivers seat memory, massager, heat/cooling all suddenly stopped working. I began troubleshooting and came to a conclusion that the drivers seat control module went bad.
Ok, no biggie, stuff happens. Found a good used one off fleabay and bought it. Few days later I have it in my hands.
Today, I go to make the swap. Decided Im gonna look and save the coding of my old module first. I also take a look at the passenger seat coding and see a big difference in the two. My driver's side was all 1s and 0s, not out of norm, while the passenger side had alpha numeric characters.
I copied the passenger side and pasted it in the drivers side. Coding accepted.
After I went through the basic settings for the seat, viola, everything works.
So, how could my module lose its code? I have a newish battery, replaced last year. Haven't had any other issues with the car. Any ideas?
AudiWorld Member
Joined: Dec 2017
Posts: 157
Likes: 20
Not the first time I've seen it happen.
My night vision control module decided one day that it's no longer going to communicate with anything, other than to tell you it's going to refuse to communicate with anything. Audi released a TSB about the possibility of it happening and the root cause of it being a software bug, with the solution being to replace the module entirely for older applications and reprogram for newer ones. And of course, it's not free.
My night vision control module decided one day that it's no longer going to communicate with anything, other than to tell you it's going to refuse to communicate with anything. Audi released a TSB about the possibility of it happening and the root cause of it being a software bug, with the solution being to replace the module entirely for older applications and reprogram for newer ones. And of course, it's not free.
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