E550 transmission issues
Thread Starter
Newbie
Joined: Oct 2021
Posts: 2
Likes: 0
e550 convertible
E550 transmission issues
Hello I recently bought an E550 and am having some issues with the way Mercedes has tuned the transmission. In eco mode it's way too soft in shifting with starting in 2nd, and how quickly it hunts upper gears.
But in sport mode I find the suspension to be needlessly busy for no reason. It seems there's no way to divorce the suspension from the transmission.
And I'm sure we all know how bad the manual shifting is on the car. Really rough downshifting with no rev matching and extremely delayed responses.
Is there any tcu tune out there that improves the behavior of the transmission? Anything that improves the behavior of the car?
Or will an engine tune simply overwhelm the slowness of the transmission with raw power? I just came from a tuned Golf R which has a good DSG stock, and when tuned was almost telepathic. Also just sold an M3 with DCT which again when tuned was great in auto mode, and of course in manual mode was lightning quick.
I know this isn't that, but I'm hoping it can be improved somehow.
Thoughts?
But in sport mode I find the suspension to be needlessly busy for no reason. It seems there's no way to divorce the suspension from the transmission.
And I'm sure we all know how bad the manual shifting is on the car. Really rough downshifting with no rev matching and extremely delayed responses.
Is there any tcu tune out there that improves the behavior of the transmission? Anything that improves the behavior of the car?
Or will an engine tune simply overwhelm the slowness of the transmission with raw power? I just came from a tuned Golf R which has a good DSG stock, and when tuned was almost telepathic. Also just sold an M3 with DCT which again when tuned was great in auto mode, and of course in manual mode was lightning quick.
I know this isn't that, but I'm hoping it can be improved somehow.
Thoughts?
MBWorld Fanatic!
Joined: Oct 2010
Posts: 5,141
Likes: 1,293
From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
Hello I recently bought an E550 and am having some issues with the way Mercedes has tuned the transmission. In eco mode it's way too soft in shifting with starting in 2nd, and how quickly it hunts upper gears.
But in sport mode I find the suspension to be needlessly busy for no reason. It seems there's no way to divorce the suspension from the transmission.
And I'm sure we all know how bad the manual shifting is on the car. Really rough downshifting with no rev matching and extremely delayed responses.
Is there any tcu tune out there that improves the behavior of the transmission? Anything that improves the behavior of the car?
Or will an engine tune simply overwhelm the slowness of the transmission with raw power? I just came from a tuned Golf R which has a good DSG stock, and when tuned was almost telepathic. Also just sold an M3 with DCT which again when tuned was great in auto mode, and of course in manual mode was lightning quick.
I know this isn't that, but I'm hoping it can be improved somehow.
Thoughts?
But in sport mode I find the suspension to be needlessly busy for no reason. It seems there's no way to divorce the suspension from the transmission.
And I'm sure we all know how bad the manual shifting is on the car. Really rough downshifting with no rev matching and extremely delayed responses.
Is there any tcu tune out there that improves the behavior of the transmission? Anything that improves the behavior of the car?
Or will an engine tune simply overwhelm the slowness of the transmission with raw power? I just came from a tuned Golf R which has a good DSG stock, and when tuned was almost telepathic. Also just sold an M3 with DCT which again when tuned was great in auto mode, and of course in manual mode was lightning quick.
I know this isn't that, but I'm hoping it can be improved somehow.
Thoughts?
You dint mention the year of your car. Mine is 2010 with the NA 5.5 L engine.
Last edited by Arrie; Nov 2, 2021 at 02:25 PM.
MBWorld Fanatic!
Joined: May 2021
Posts: 2,524
Likes: 2,041
From: US
2008 E350, 2012 ML350, 2014 E350, 2015 ML350
Now that Arrie, and Senecat joined ( missing Madman) with E550's, I wonder if you have all read the following thread https://mbworld.org/forums/s-class-w...ml#post7885610
That car is another M278+7Gtronic transmission, correct? Just on a different platform. Would some of the "issues" be common?
Just a wild thought.
That car is another M278+7Gtronic transmission, correct? Just on a different platform. Would some of the "issues" be common?
Just a wild thought.
MBWorld Fanatic!
Joined: Aug 2021
Posts: 1,536
Likes: 764
1983 Nissan Shltbox
722.9's were used in everything. You can find used 7G's online for $400 bucks all day long. There's absolutely nothing wrong with the engineering. It's always software. You don't like how it shifts, find a Xentry console and run adaptations until you're heart's content.
Banned
Joined: Oct 2005
Posts: 4,957
Likes: 1,640
This is a 2-door convertible? Basically a C class with the TTV8, so the driving dynamics are quite a bit different from the Sedan. I have no transmission or suspension issues as you described. Maybe try a transmission reset if you haven't already done that.
