Mathew Giddey

I have a C63s 2016 amg and was wondering has anyone had a problem when they have their car in sports mode and when driving to say slow down to a set of lights from 2nd to first they get a shocking jolt when changing down gears? Has anyone had this and whats the procedure to reset the transmission module? I tried the accelerator procedure but did nothing. I also had the gear oil changed recently to see if it would help.

Ksun_w205

I experience the exact same thing in sport+, never drove in sport before lol. I think this is just the nature of these transmissions as others have experienced the same thing. I usually just drive in manual and down shift at higher rpm's so I can hear the pops and avoid this jerk

jherm

Jerky transmission at low speeds in sport+ mode is a common issue. The TCU update done in conjunction with the much discussed exhaust software update resolves the issue.

Ksun_w205

Is there a way to tell if TCU has been updated? I got the engine update for the pops/crackles but I still get jerky shifts at low speeds in sport+

jherm

Believe the only way to determine the TCU version is hooking it up to the MB computers.

If you got that engine update then the TCU should have been done at the same time. Perhaps that is not the issue here.

koifysh

Same problem here so i’m wondering if a tcu tune would fix this problem. Imm also getting weistec trans upgrade to hand all the torque from pure900 turbos

Ksun_w205

I think its just the nature of these transmissions. They where never known to be smooth

amg8

Mine is very smooth...I have all updates though...

Ksun_w205

You don't feel any shifting at all when slowing down? The dealer told me its just how the transmission is and some other owners said as well. I'm envious of your transmission lol

C3504matic

Mine jolts 3 to 2 downshift only when cold

C63Texas

My transmission is also jerky in Sport+ (which I think is expected because the transmission is wanting to be aggressive for spirited driving), but quite smooth for the most part in Sport. I might call a local shop that is AMG certified to verify the TCU upgrade, as Merc likes to avoid fixing stuff lol I've noticed. They tend to act dumb so they can focus on making $$$ on customers that are out of warranty.

Ksun_w205

Mine also only slightly jolts when cold and when warmed up it is a lot better but I just feel slight down shifting per say from 3 to 2

36EGMA

Mines jolts from 2nd to 1st pretty hard. So annoying

C63Texas

I really think it's how our transmission is built when in Sport +. I think Sport + is ready for track mode haha.

See63r

Any update on this? I noticed the harsh jerk from 2nd to 1st coming to a dead stop. Unless I shift manually down to 1st before the car stops.