Turbo Lag 2017 S63 AMG
It seems to be limited to comfort mode and there are no saved trouble codes. The spark plugs have been changed and the transmission service was performed 20,000 miles ago. Has anyone else experienced this issue with their S63? I have been driving it around in the Sport mode for the last 4 days to see if I can duplicate the symptoms and so far there are no issues. It's scheduled to go to the Dealership in another 2 weeks for the 80,000 mile service. Could it possibly be a transmission or software issue?
- how long have you owned the car?
- sport mode or s+ is totally fine?
- what are the rpm's doing during power drop?
- when it's cold - no power drop?
- is the trans slipping during shifts?
- what device are you using to pull codes? Icarsoft? Xentry? Obd dongle? Depending on device there may be codes you're not seeing
- they could look for software updates but I would figure there are none left for trans after 6 years and 80k miles
- hard to believe it's a trans issues if s and s+ are perfect
- mct may need readaptation (wet clutch)
post this in w212amg forum to get more traction
and use this sticky for future help
https://mbworld.org/forums/w212-amg/...-w212-amg.html
Last edited by PeterUbers; Feb 17, 2023 at 08:46 PM.




- how long have you owned the car?
- sport mode or s+ is totally fine?
- what are the rpm's doing during power drop?
- when it's cold - no power drop?
- is the trans slipping during shifts?
- what device are you using to pull codes? Icarsoft? Xentry? Obd dongle? Depending on device there may be codes you're not seeing
- they could look for software updates but I would figure there are none left for trans after 6 years and 80k miles
- hard to believe it's a trans issues if s and s+ are perfect
- mct may need readaptation (wet clutch)
post this in w212amg forum to get more traction
and use this sticky for future help
https://mbworld.org/forums/w212-amg/...-w212-amg.html
I've owned the car for about 6 months now and it had 72,000 miles on it when I bought it and now shows 85,000 miles. I reset the TCU about 4 days ago using the push button directions. It's the cheapest and quickest fix, if it works, so I figured I'd try it, though I thought the vehicle was constantly adapting and learning my driving habits which it should have learned by now, I would think. I've been driving it in the Comfort mode since then to see if it duplicates the issue and so far it hasn't though I haven't driven it much in town since then, but hope to do so this weekend. I noticed that the power dropped down from 2000 RPM's to almost 0 RPM's during the lag. It doesn't feel like the transmission is slipping during the shifts though I currently have soft winter tires on the vehicle and from time to time from take off it does feel as if the tires are "spinning" for lack of a better word.
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The car ran extremely rough (like a tank) when I first drove it but after adding 20 oz of Chevron Techron Concentrate Plus Fuel System Cleaner to a fresh full tank of gas and putting 300 highway miles on it since then, it's riding much better now. hopefully nothing else will go wrong any time soon. I'm keeping my fingers crossed. Now if I could just find a way to prevent the ridiculous amount of coolant smelling steam from coming from the right front bumper side of the car when I go through an automatic carwash I will be even happier.
Glad the transmission is solved.
An extended warranty that doesn’t cover leaks. That is a first for me. Considering a lot of what ends up getting repaired IS leak related this gives them a huge out.






