RepairPal is your advocate for car care advice and guidance

Q: shifting on 1997 Mercedes-Benz C230

my car is not shifting out of first i replace the transmission and the computer but i am still having the same problem and also replace the transmission module that connect to the transmission what else could be the problem and how can i check these problems i hgot the check light read and it said transmission electrical problem and gear shift incorrect what do i do to fix this
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
I had the same problem a few years ago with my 99 c230 kompressor. The problem turned out to be not in the transmission, but some sort of electrical device within the gearbox (i forget the name of it but it sends a signal to the transmission when needing to be shifted). My girlfriend had spilled some coffee months prior near the gearbox (some of which leaked inside the actual gearbox). Again, I can't remember the exact name of the part that was replaced but I ended up having to take it to the dealership in order for the problem to be solved. The part itself cost about $100 but there was about $800 of labor involved (but again, this was at the dealership), so if you can find a good mechanic you can probably fix it for a lot cheaper. I can try to go through my repair records later and find the name of the part but for now let me know if this helps.
Most likely the problem your having is these transmissions and transmission control modules are what they call adaptive transmissions. This means that the transmission is not married to the control module so it doesn't know when to shift. You need to take the car to the dealer tell them you had a new transmission and control module installed and need to have the adaptions done. You should be good to go. Also the check engine light will not go off until the adaption is done.
Wheel speed sensors need to be changed because they have detected metal particles on thier magnets. When this happens the car goes into limp home mode like you described. Dealer wanted 1500 I found a third party Mercedes mechanic that did all four wheel sensors for 200
good luck.
Didn't find what you were looking for?