Learning 7GTronic - horrific learning algorithm
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Joined: Aug 2016
Posts: 130
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'11 E350 4Matic Sport
Learning 7GTronic - horrific learning algorithm
So only reason I am posting is that I had an '09 C300 with the 7GTronic that behaved much better than the one in my '11 E350 4Matic.
I have performed the reset multiple times and the transmission works well and is responsive for about a week then just goes back into its lug around town mode at 1100-1500RPM. Leaves me dead in the water many times per day waiting for torque to build, if I garner a downshift I get far more acceleration than needed. There is ZERO in between - it's either lugging along trying to go or a downshift and huge squirt of forward momentum beyond what was requested.
I never had these issues with my C300 with basically the same transmission (albeit non-4Matic) under same driving style. Am I doing something wrong here?
I have performed the reset multiple times and the transmission works well and is responsive for about a week then just goes back into its lug around town mode at 1100-1500RPM. Leaves me dead in the water many times per day waiting for torque to build, if I garner a downshift I get far more acceleration than needed. There is ZERO in between - it's either lugging along trying to go or a downshift and huge squirt of forward momentum beyond what was requested.
I never had these issues with my C300 with basically the same transmission (albeit non-4Matic) under same driving style. Am I doing something wrong here?
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Joined: May 2006
Posts: 1,319
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From: Virginia
W212 M276 DELA 30 ; W211 M113k, W126 M117, W126 OM617, W211 OM642 ; R107 M117 X2, Sierra 1500 LZ0
So only reason I am posting is that I had an '09 C300 with the 7GTronic that behaved much better than the one in my '11 E350 4Matic.
I have performed the reset multiple times and the transmission works well and is responsive for about a week then just goes back into its lug around town mode at 1100-1500RPM. Leaves me dead in the water many times per day waiting for torque to build, if I garner a downshift I get far more acceleration than needed. There is ZERO in between - it's either lugging along trying to go or a downshift and huge squirt of forward momentum beyond what was requested.
I never had these issues with my C300 with basically the same transmission (albeit non-4Matic) under same driving style. Am I doing something wrong here?
I have performed the reset multiple times and the transmission works well and is responsive for about a week then just goes back into its lug around town mode at 1100-1500RPM. Leaves me dead in the water many times per day waiting for torque to build, if I garner a downshift I get far more acceleration than needed. There is ZERO in between - it's either lugging along trying to go or a downshift and huge squirt of forward momentum beyond what was requested.
I never had these issues with my C300 with basically the same transmission (albeit non-4Matic) under same driving style. Am I doing something wrong here?
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Joined: Jan 2009
Posts: 9,224
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From: V E G A S
1922 Ford Model T / no OBD
7G had update between the years and that is when from "once in lifetime" service they went to intervals. From what I noticed between my 2008 and 2014 models - filters are having different media, even the shape is the same.
Coming to learning process - I ditto scanning the car.
Computer adapts the shifting to your driving style and sounds like something is out of wack.
Coming to learning process - I ditto scanning the car.
Computer adapts the shifting to your driving style and sounds like something is out of wack.
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Joined: Oct 2014
Posts: 1,053
Likes: 347
2011 E-350 4Matic Sport
Just a thought.
Are you sure it's transmission? The gas pedal has a position sensor (drive by wire) that can sometimes get "lazy". This can cause a lag between the pedal position and what the PCM is commanding to the engine. If you have a scantool to access vehicle modules you should be able to see specific position readings. A generic obd2 may be able to at least give you throttle body opening position to try to gauge pedal vs throttle positions.
Are you sure it's transmission? The gas pedal has a position sensor (drive by wire) that can sometimes get "lazy". This can cause a lag between the pedal position and what the PCM is commanding to the engine. If you have a scantool to access vehicle modules you should be able to see specific position readings. A generic obd2 may be able to at least give you throttle body opening position to try to gauge pedal vs throttle positions.
MBWorld Fanatic!
Joined: May 2006
Posts: 1,319
Likes: 251
From: Virginia
W212 M276 DELA 30 ; W211 M113k, W126 M117, W126 OM617, W211 OM642 ; R107 M117 X2, Sierra 1500 LZ0
7G had update between the years and that is when from "once in lifetime" service they went to intervals. From what I noticed between my 2008 and 2014 models - filters are having different media, even the shape is the same.
Coming to learning process - I ditto scanning the car.
Computer adapts the shifting to your driving style and sounds like something is out of wack.
Coming to learning process - I ditto scanning the car.
Computer adapts the shifting to your driving style and sounds like something is out of wack.
MBWorld Fanatic!
Joined: Oct 2010
Posts: 5,141
Likes: 1,293
From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
So only reason I am posting is that I had an '09 C300 with the 7GTronic that behaved much better than the one in my '11 E350 4Matic.
I have performed the reset multiple times and the transmission works well and is responsive for about a week then just goes back into its lug around town mode at 1100-1500RPM. Leaves me dead in the water many times per day waiting for torque to build, if I garner a downshift I get far more acceleration than needed. There is ZERO in between - it's either lugging along trying to go or a downshift and huge squirt of forward momentum beyond what was requested.
I never had these issues with my C300 with basically the same transmission (albeit non-4Matic) under same driving style. Am I doing something wrong here?
I have performed the reset multiple times and the transmission works well and is responsive for about a week then just goes back into its lug around town mode at 1100-1500RPM. Leaves me dead in the water many times per day waiting for torque to build, if I garner a downshift I get far more acceleration than needed. There is ZERO in between - it's either lugging along trying to go or a downshift and huge squirt of forward momentum beyond what was requested.
I never had these issues with my C300 with basically the same transmission (albeit non-4Matic) under same driving style. Am I doing something wrong here?
My first MB was a brand new 2011 E350 and it had this problem. I now drive 2010 E550 and it has the same problem but I installed a Sprint Booster and it takes care of it all. $300 but you will NOT regret this investment, guarantee it.
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MBWorld Fanatic!
Joined: Oct 2010
Posts: 5,141
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From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
Best money I have ever spent on a car after purchase. SB really works well and installation is super easy. I drove the car without it until warranty ran out so MB cannot blame any issue on SB if any would arise. I have driven about 2 1/2 years with it now and there has been no issues at all. It has many settings allowing to set it for aggressiveness you like.
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Senior Member
Joined: Dec 2018
Posts: 284
Likes: 60
From: New York
2010 E350 4Matic sedan
I just got the sprint booster tonight. It took me not even 10 minutes to hook it up and put the pedal back together. I took it for a test drive and I like it. I think Race 1 is the setting I will use for daily driving. What settings do you like? I have the 2010 e350 sedan.
Last edited by pb39374; Mar 28, 2019 at 11:11 PM.
MBWorld Fanatic!
Joined: Oct 2010
Posts: 5,141
Likes: 1,293
From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
I just got the sprint booster tonight. It took me not even 10 minutes to hook it up and put the pedal back together. I took it for a test drive and I like it. I think Race 1 is the setting I will use for daily driving. What settings do you like? I have the 2010 e350 sedan.
I have mine on red 3.
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Joined: Jul 2003
Posts: 1,181
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From: Abbotsford, BC, Canada
1999 SL 500 & 2011 E 550 4Matic
Sounds like a fun toy ... where is it installed? Pics?
Do you get better than stock performance ... or just defeat the bad learning habits of the transmission?
Do you get better than stock performance ... or just defeat the bad learning habits of the transmission?
MBWorld Fanatic!
Joined: Oct 2010
Posts: 5,141
Likes: 1,293
From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
SB is a small plastic piece that mounts on the gas pedal where the wire harness connects to, i.e. you connect this SB module to the gas pedal and then the wire harness to the module. For installation you need to unscrew two nuts that hold the gas pedal on floor.
From the module you have a wire with a small control box with selector buttons in the end of it that you glue with 2-sided tape somewhere you want. You can select no effect or then several different modes that give you different behavior. You can use it to give very mild aggressiveness up to very strong.
Sorry I have no pics.
Super Member
Joined: Oct 2013
Posts: 584
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From: Bay Area, CA
2010 E550
If the transmission learns your driving habits, why doesn't it adapt to a sprint booster. Will the sprint booster become less effective over time because the transmission is adapting to what it thinks is an overly heavy foot?
MBWorld Fanatic!
Joined: Oct 2010
Posts: 5,141
Likes: 1,293
From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
Yes, the transmission still does the adaptation but SB can be set so aggressive it takes care of it. That is why I use my SB at the 7th highest level. That is high enough for me. But I have 6 more aggressive levels to go if I feel so.
