C63 MCT not shifting automatically
Thread Starter
Newbie
Joined: Feb 2019
Posts: 2
Likes: 0
2013 C63 AMG
C63 MCT not shifting automatically
Hi everyone. I’m new to the site. Just bought a 2013 C63 with about 42k miles on it last week. Everything has been great until this morning when the transmission wouldn’t shift automatically in C or S mode. It would hold the gear until I shifted it myself around 4.5k rpm. It would then not downshift automatically even when I came to a stop. This happened for about 10 minutes of driving, and then seemed to resolve. Temperature outside this morning was in the mid 40’s so I don’t think it has anything to do with that. Has anyone experienced this before or have an idea what could be wrong? Thanks
Senior Member
Joined: Dec 2018
Posts: 472
Likes: 149
From: Germantown, Maryland
2012 P31 C63
Senior Member
Joined: Apr 2017
Posts: 367
Likes: 34
14 polar white E550
Man iv been having issues with my transmission since I got the car and ill tell you that the MCT is a really crappy transmission . Iv done the fluid swap at the correct service time also did multiple clutch adaptions resets and nothing was resolved . My car has stock airboxes since I thought that was the issues but nothing has been fixed. Im thinking now that is has to do something with the valve body or conductor plate , but wont know until I can get it to a dealer.
issue with mine is it flares between shifts in C mode and it feels like the start up clutch is grabbing a releasing before settling down to the gear . In M mode it does not do this at all which is a relief telling me it might just be a software and not an actual hardware problem. Your issue with the shifting def sounds like something to do the the conductor plate which has the TCU on it . It would need a fancy scanner to scan that module and see if anything is stored or in the freeze frame .
issue with mine is it flares between shifts in C mode and it feels like the start up clutch is grabbing a releasing before settling down to the gear . In M mode it does not do this at all which is a relief telling me it might just be a software and not an actual hardware problem. Your issue with the shifting def sounds like something to do the the conductor plate which has the TCU on it . It would need a fancy scanner to scan that module and see if anything is stored or in the freeze frame .
