C63 AMG (W204) 2008 - 2015
Sponsored by:
Sponsored by:

Transmission issues on Facelift C63

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 06-15-2017, 05:56 PM
  #1  
Member
Thread Starter
 
cornerjunkie's Avatar
 
Join Date: Apr 2012
Posts: 249
Received 26 Likes on 21 Posts
none
Transmission issues on Facelift C63

I've had ongoing issues where right after initial start up, the 2nd-3rd gear change would 'jump' or 'slip'. It would only happen during that first gear change, then would shift normally through the rest of the drive. Only seemed to do it when engine was cold. Took it in to the dealer, and they couldn't find anything wrong. Reset codes, adaptations, etc. Problem never really went away.

I had the transmission service completed a couple weeks ago, which also didn't solve the issue... Until today, this was the only issue I was having, but this afternoon I got in my car after it sat for an hour or so and in Comfort mode, the shifting was incredibly lagged and erratic. It was rough and felt like it couldn't decide which gear it needed to be in. Eventually, it got better. Happened again an hour ago after the car sat. This time, I put it in M mode to see if the problem still happened, it didn't. Only seems to happen in C,S,S+...

I have a trip to the dealer scheduled for tomorrow to see what they can find. Of course, my warranty ran out 3 weeks ago. There doesn't seem to be a whole lot of threads that show issues to this transmission, but from what I can find, it looks like the valve body is the bigger ticket item that can go, and is an issue for the 722.9 model. I've read that some of the issues are bad solenoids, which can be replaced independently in some cases, but others call for a complete new valve body that can run $2,500+... I'd obviously like to avoid something like that, but does anyone have any experience with the issues I have and what repairs have been done to alleviate them? I would imagine that replacing the individual solenoids would be a lot cheaper than that. I'm hoping it is a software issue, and not a hardware issue.

I will see if I can snap a short video of it happening this evening.

TIA
Old 06-15-2017, 06:11 PM
  #2  
MBWorld Fanatic!
 
BLKROKT's Avatar
 
Join Date: Jun 2008
Location: Los Angeles
Posts: 8,063
Received 2,845 Likes on 1,678 Posts
2012 P31 C63 Coupe Trackrat, 2019 GLE63S Coupe Beast
Originally Posted by cornerjunkie
I put it in M mode to see if the problem still happened, it didn't.
Fixed it. Saved you $2500 too.
Old 06-15-2017, 06:20 PM
  #3  
MBWorld Fanatic!
 
Adi-Benz's Avatar
 
Join Date: Apr 2016
Location: Milwaukee, WI
Posts: 4,695
Received 547 Likes on 483 Posts
2010 C300 4MATIC........ 2011 C63 AMG.............. 2015 CLS400 4MATIC.....
facelift shouldn't have valve body issue?
Old 06-15-2017, 06:51 PM
  #4  
MBWorld Fanatic!
 
BLKROKT's Avatar
 
Join Date: Jun 2008
Location: Los Angeles
Posts: 8,063
Received 2,845 Likes on 1,678 Posts
2012 P31 C63 Coupe Trackrat, 2019 GLE63S Coupe Beast
Originally Posted by Adi-Benz
facelift shouldn't have valve body issue?
Why not?

Maybe it's his front U-joint. That must be it.
Old 06-15-2017, 07:04 PM
  #5  
Member
Thread Starter
 
cornerjunkie's Avatar
 
Join Date: Apr 2012
Posts: 249
Received 26 Likes on 21 Posts
none
Yeah, the transmission is basically identical to the PFL. The only real difference is the clutch system. It's still a 722.9 design, which is used in a lot of models so I don't think the valve body would be out of the question.

I just tried to take a video and of course I couldn't recreate the issue this time... I did that 'ECU reset' with the throttle before I got out last time (I still have yet to see real evidence that this actually works). I may try to take another vid first thing in the morning once the car is completely cooled down.
Old 06-15-2017, 07:30 PM
  #6  
MBWorld Fanatic!
 
Adi-Benz's Avatar
 
Join Date: Apr 2016
Location: Milwaukee, WI
Posts: 4,695
Received 547 Likes on 483 Posts
2010 C300 4MATIC........ 2011 C63 AMG.............. 2015 CLS400 4MATIC.....
Originally Posted by BLKROKT
Why not?

Maybe it's his front U-joint. That must be it.
722.9+ had some things fixed, was pretty sure that was one of them

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Transmission issues on Facelift C63



All times are GMT -4. The time now is 02:24 PM.