*** Restricting New Posts to SD Premium Members ONLY *** (09 May 2025)

Just made a new account? Can't post? Click above.

Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!

2023 MB C43 electrical

  • Joe Anderson
  • Joe Anderson's Avatar Topic Author
  • Offline
  • New Member
  • New Member
More
1 month 1 week ago #92089 by Joe Anderson
2023 MB C43 electrical was created by Joe Anderson
Hello all, it's been a while since I was here. I ended up working at an Audi dealership for the last 4 years, and I feel like I've forgotten all my diag training I did with you all, as well as with Brin. Anyway, I've taken over a shop in Vero Beach, FL. I just bought a new TopDon Phoenix scanner and scope. 

My car I'm working on is a 2023 Mercedes C43 AMG convertible. The issue is the passenger seat will not work. No movement at all, no seat warmer or vents. I have no communication with the seat module. I sent this car to a MB dealership and they found rodent damage to the wiring. I brought the car back to my shop, and I repaired the wires on the passenger side. I still had no communication with the seat. Sent the car to MB again, and they said it needed a seat module. Now I didn't tell them this, but I had already taken the seat module from the drivers seat, that works, and installed it on the passenger seat for testing. Still had no communications. I switched the modules back. So the dealer swore that was the problem. It was not. $1600 later and I'm still at the same problem, no communication with the passenger side only. I pulled the carpet on the drivers side, and found a bunch of wiring broken / eaten from rodents. I repaired those wires as well, but still no communications.

I believe it is just a CAN B network issue. I want to test communication from the door module (N69/2) to the seat module (N32/2) but I forget how to watch the network with a scope. I was hoping you could point me in the right direction with your training video's to help me remember?

I have access to Alldata and ProDemand. 

Thank you,

 

Please Log in or Create an account to join the conversation.

  • Noah
  • Noah's Avatar
  • Offline
  • Moderator
  • Moderator
  • Give code definitions with numbers!
More
1 month 1 week ago #92093 by Noah
Replied by Noah on topic 2023 MB C43 electrical
Wow! That poor thing has been through a lot in its short life! I don't really have any great Mercedes Benz specific information for you, especially not on something that new.
However, if you're looking for network troubleshooting tips, there's a great two part series by Tanner Brandt for Scanner Danner Premium
scannerdanner.com/scannerdanner-premium-...gnostics-part-1.html
Definitely keep us updated, I hope you can get this one sorted out

"Ground cannot be checked with a 10mm socket"

Please Log in or Create an account to join the conversation.

Time to create page: 0.299 seconds