My 08' will give me rough upshift from time to time when I step on it (@ 50% throttle) and then lift off during overtaking, etc. It feels almost like you are driving a manual and you let out the clutch improperly and results in a jerky upshift. Is this normal?
Rough upshift from time to time
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Many 7g transmission owners have complained of jerky shifting. It varies in degree of
severity.
The largest complaint early on was the downshifting from 3-2-1. There was a massive
undertaking by MB to change the software and then valve bodies.
If possible I would see if it left a code as it sounds like something in the electronics
that control the shifting may be starting to act up.
The reason I say that is that there are a few possibilities that could have caused this.
The perplexing part is that it is not happening constantly.
How many miles are on the car?
severity.
The largest complaint early on was the downshifting from 3-2-1. There was a massive
undertaking by MB to change the software and then valve bodies.
If possible I would see if it left a code as it sounds like something in the electronics
that control the shifting may be starting to act up.
The reason I say that is that there are a few possibilities that could have caused this.
The perplexing part is that it is not happening constantly.
How many miles are on the car?
Mine is a E350 4M (5g?) at 21k. On one occasion, I could hear a loud bang in the gearbox and a massive jolt as if someone just hit me from behind.
My dealer found out that my gearbox was leaky during scheduled maintenance a couple of months ago and replaced the gearbox seal. Don't know if this rough upshift has anything to do with something that was damaged when the gearbox was running low on oil.
My dealer found out that my gearbox was leaky during scheduled maintenance a couple of months ago and replaced the gearbox seal. Don't know if this rough upshift has anything to do with something that was damaged when the gearbox was running low on oil.
I forgot you had the 4matic. I also have the 5 speed 722.6 transmission. 84k miles and
it has never done that to me. It has always been smooth. I am at a loss. Do you have a way
to get the codes checked without getting nailed by dealer pricing?
it has never done that to me. It has always been smooth. I am at a loss. Do you have a way
to get the codes checked without getting nailed by dealer pricing?
I just realized you are under warranty. Get this noted at the dealer and have the codes
read. Under warranty with a transmission complaint the dealer should not charge you
for the diagnosis. At least here they don't
read. Under warranty with a transmission complaint the dealer should not charge you
for the diagnosis. At least here they don't
I did post that just above after realizing how new your car is. That way a record of the
customer complaint of a possible malfunction is on record with a dealer. That is something
I would absolutely do.
customer complaint of a possible malfunction is on record with a dealer. That is something
I would absolutely do.
If the issue is on record, does it mean I'll still be covered when the warranty expires?
1988 Mercedes Benz 300E 144256 Miles. 2003 E500 105.XXX miles. 2005 ML55 AMG 72.XXX Miles
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204 Posts
Here is my experience I had a problem when you step on it and u rev it lets say up to 4000rpm and let go of the gas and up shift will be hard like you would dump a clutch in a manual transmission.my mounts ware gone one so i change them and it improved but still had the same problem.I had service D come up then i accessed the manual in the cluster reset all the service and the shifting has never been so smooth.No more clutch dumping up shifting don't know what happened but it fixed it self
Do you need a special tool to do the cluster reset?
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