sunil517

Took my car in for leveling issues and mentioned in the morning when I shift to drive and step on the gas the rpm changes but the car is still. This is at very light throttle. Its not an issue but maybe they can look into it.
After getting the car back i noticed the exhaust sound was different when you let off the gas, I turn the radio off to be sure... When you hit the paddle to up/down shift it does respond. Where as before it did but very slow. It is a totally different car in terms of shifting and the sound.

The leveling sensors I think was my fault. I had a chassis wash and then parked the car for like 2 weeks during the holidays. I then took it out and go the level error and did not notice any issues.. but now i know the ride was much stiffer like it was in S1 mode.

compaddict

iTrader: (1)

Good to know. I need to have mine done one day.

PeterUbers

So how is the stop and go driving Sunil with the wet clutch ... is it improved?
- is the jerking still there in stop and go traffic in S or S+ mode?
- is the mct clutch enagagement lag still there?
- how bad was your jerking issue to begin with?

thanks for the info and posting your work order

sunil517

Stop and go is great. I do feel slight kickdown when it drop in to 1st on very slow roll with S+. Nothing like it was before. The paddles are more responsive. At HW speed 80+ pulled the DW and it will shift down.
I am not sure if they also added ATF or changed it. When you get off the gas the exhaust sound is different ( can't explain)for a second or two.
I was in Toronto and roads like glass...gears 1-5 shift shift on the redline no issues.... I am so happy they made the change and I did it.. Now for my BMC installation.

byroll01

I'm at the dealer now for an oil change. Brought up the jerkiness from a stop and a slipping clutch feeling. I'm hoping they do what you.had done. if not I'll show them the work you had done.

sunil517

Let us know your results and if you notice that exhaust note I am speaking of.

Amg63-

im also in toronto, which dealership did it for you?

also, from a complete stop when hitting the gas not using any kind of launch methods, does the car still have that little split second lag before going or does it launch instantly?

i think this is peters question about the lag from a stop

sunil517

I have only tried LC twice and think it is more of a SHOW than performance.
I rather foot brk the car and take the drive line slack up to not break anything. Plus to me foot breaking seem to be faster....
As soon as you take your foot off the break the car start to roll, before it would just sit like rock. The car actually roll at idle now.
I did about 1700 miles over Easter weekend with a trip to Toronto and no issues. 70-80 avg MPG was 23.7 When in TO I did a few merge into 407 401 hitting around 160 on those entrance ramp.
I am going to add my BMCs and sit back for now.. Even that EC sale on tuning have me thinking.. but I will remain stock for now...

PeterUbers

I never had a problem with the car not rolling on a flat plane at idle

occassionally on cold start the car would slowly retreat backwards while in comfort trans and in drive until I depressed the accelerator a bit but once the engine and mct a bit warm it was fine

sunil I really think you had an atypical problem with your mct and I'm glad you got it fixed, I'll check into the dealer adapting mine to get rid of the jerkiness I get occasionally if I jump on the gas too quickly while in S or S+ and slowly coming to a stop or a rolling stop

byroll01

No update from me because they had to order control arms. I had a bushing working it's way out on the front drivers side so they're replacing both. But they did tell me they will be performing the adaptation once they have it put back together.

sunil517

I am also on a flat surface when it is not moving and need a touch of gas to get her rolling.
Looking at the service sheet I notice 1 ATF. Maybe it was also low on fluid and after warming up it would response faster.

PeterUbers

interesting ....

PeterUbers

looking forward to your report once they do this

EddieK

My car is in the shop right now due to very similar issues that the OP mentioned. 'Jerky' transmission at parking lot speeds, lag from a stop, and just general clunkiness at speeds under 30mph. Service advisor called and said that they were doing a wet clutch/transmission adaptation and will road test it tomorrow and will report back. I'll update when I get it back.

sunil517

No more lag, stop and go traffic, once you let off the brake the car rolls (C Mode) 0-15 mph no issues gas it and she goes. slow down to 0 no issues. Shift like a normal car up to like 30 ish with nice smooth downshift. In S+ same thing but when it downshift to 1st gear you get slight jerk. I feel like the car is going into 1st gear early for better acceleration for performance reason where you would see the RPM bump up a some.
I did a few 0- very high 3 digits pulls when I was in Toronto and all gears were right on.. no delay..shifts were on point.
I am loving this car all over again.
I am 100% stock and now I am going to install my BMC filters and fingers crossed no CEL.

PeterUbers

when you get a chance ... try this...

when slowing down abruptly for a stop... before you come to 5 mph, jump back on the gas and accelerate ... does it jerk?

chiromikey

The lag isn't mechanical so I don't see any way this will solve that problem. It's in every MB including C, E, G class loaners I've had.

gaspam

^ its even worse in reverse.... so many times i have put it in R trying to get out/ or into a parking spot quickly on the street and trans is like "hold please"

PeterUbers

there is no way Sunil has NO lag; he is describing something different as lag than what we have come to know and discuss as lag in the mct

nikon

lol

nikon

2015-2016 cars have an updated clutch. It's slightly quicker. For example, if I reset transmission adaptations, there's absolutely no lag while taking off. If the car is driven grandma style for a while and adapts to that style, then a slight lag can be felt in comfort setting (my observations). My transmission shifts really well. A buddy of mine has a 2014 and yes it feels different all around. Even after it has been reset.

Amg63-

are you sure about this and is it also true for the 15-16 cls63 amgs?

Astolfo

This is funny! Sunil does not know how his car was before and after.. being sarcastic here!
Why is it so difficult to accept reality? If the gears and clutch are not properly aligned IT WILL take longer to find the correct position. I think the translation is hunting for alignment. 2015 and early 2016 have common components and software, mid and late 16 have a few unique parts and software.
Nothing like proving negative...
You don't believe me? ask your dealer to do a Bit compare between the files and get back to me.

chiromikey

It's not hardware, even lesser model tq converter trannys do it...

sunil517

Before all this I would put my car into drive/reverse and I can tell you I am sure I could step of of the car and it will be there when I get back. I thought that was because of the AWD system. It felt like the hand brk was on.
The car felt like a rock will not move unless you gave it some gas.
NOW I put it into drive she rolls reverse NO gas...
I am not speak of Turbo lag. I am talk about how long does it feel to have the gear engaged and not moving unless you gas it...

Anyone in NYC area we can meet up.
I know of a 15 63 in the area and I will reach out and swap cars and note difference. My paddle shift is way better that was the worst.