GLK Transmission control module Tcm problems
07-10-2018 | 08:59 PM
#1
Thread Starter
Junior Member
Joined: Sep 2016
Posts: 16
Likes: 7
2013 GLK 250
GLK Transmission control module Tcm problems
I was driving home from work and noticed my engine light on. Then I started to notice that I couldn’t accelerate as fast. Driving city wise, it was manageable , but super slow take offs. My code reader says transmission control module 3y/8n4. My most recent research shows that only the dealership can install one since it has to be programmed by them. And it’s a very common problem amongst newer. Mercedes .
any one have a solution to fix it ?
any one have a solution to fix it ?
07-10-2018 | 09:20 PM
#2
MBWorld Fanatic!
Joined: May 2015
Posts: 4,037
Likes: 994
From: Miami, FL
2003 CL 600
I was driving home from work and noticed my engine light on. Then I started to notice that I couldn’t accelerate as fast. Driving city wise, it was manageable , but super slow take offs. My code reader says transmission control module 3y/8n4. My most recent research shows that only the dealership can install one since it has to be programmed by them. And it’s a very common problem amongst newer. Mercedes .
any one have a solution to fix it ?
any one have a solution to fix it ?
07-10-2018 | 09:52 PM
#4
MBWorld Fanatic!
Joined: May 2015
Posts: 4,037
Likes: 994
From: Miami, FL
2003 CL 600
There are "rebuilders" on Ebay and places that will sell you a "virginized" TCM that can have the initial startup performed by a properly enabled SDS, but there's no way to DIY it.
It's not a terribly expensive part, replace it and carry on with life. This isn't something you want to be doing over and over again, and driving the car in limp mode for any length of time can cause severe mechanical damage in the transmission if it's already getting worn, best to fix it sooner than later.
