W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Transmission issue?

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Old Nov 15, 2022 | 03:48 PM
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Transmission issue?

I have a 2006 AMG with 75000 miles on it and at time I feel like the transmission is kind of the bleh part of this car. in Sport or comfort it doesn't seem to have the response I would expect. On a few occasions, most recently just now at cruising speed 30-35mph I gave it a fast stab of the accelerator pedal and the car revved, didn't really accelerate and then seemed to BANG into gear, was very weird. Was not a transmission slip otherwise it would have redlined, more like an extreme lag then downshift and noticable bang.
. It's not the transmission or motor mounts those were just done. What are some common things to look at on the drive line or actual transmission. The car has no codes at all, none..
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Old Nov 15, 2022 | 04:36 PM
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2005 E55 AMG **sold** 2005 E55 AMG Take 2
https://mkultraelectronics.com/produ...03-06-e55-amg/

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Old Nov 15, 2022 | 04:43 PM
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Originally Posted by E55KOMPRESSED
https://mkultraelectronics.com/produ...03-06-e55-amg/

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I don't understand what a TCU tune is going to do for me if I have a mechanical failure, which is kinda what it felt like.
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Old Nov 15, 2022 | 04:54 PM
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Originally Posted by Jerseyjules
I have a 2006 AMG with 75000 miles on it and at time I feel like the transmission is kind of the bleh part of this car. in Sport or comfort it doesn't seem to have the response I would expect. On a few occasions, most recently just now at cruising speed 30-35mph I gave it a fast stab of the accelerator pedal and the car revved, didn't really accelerate and then seemed to BANG into gear, was very weird. Was not a transmission slip otherwise it would have redlined, more like an extreme lag then downshift and noticable bang.
. It's not the transmission or motor mounts those were just done. What are some common things to look at on the drive line or actual transmission. The car has no codes at all, none..
You might want to check the fluid level (you will need to buy the tool for that). If the transmission has been leaking a low level might be causing your issue.
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Old Nov 15, 2022 | 04:57 PM
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Originally Posted by MJBelcher500
You might want to check the fluid level (you will need to buy the tool for that). If the transmission has been leaking a low level might be causing your issue.
Is that the same tool used for the oil level? Or do I got to buy another special Mercedes tool to check my fluids well?
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Old Nov 15, 2022 | 04:58 PM
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Originally Posted by Jerseyjules
Is that the same tool used for the oil level? Or do I got to buy another special Mercedes tool to check my fluids well?
No, the transmission tool is different.
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Old Nov 15, 2022 | 04:59 PM
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Originally Posted by MJBelcher500
No, the transmission tool is different.
great....😂😂
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Old Nov 15, 2022 | 05:02 PM
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Originally Posted by Jerseyjules
great....😂😂
They are cheap. Under $12
Amazon Amazon
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Old Nov 16, 2022 | 11:09 AM
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2005 e55
Originally Posted by Jerseyjules
I have a 2006 AMG with 75000 miles on it and at time I feel like the transmission is kind of the bleh part of this car. in Sport or comfort it doesn't seem to have the response I would expect. On a few occasions, most recently just now at cruising speed 30-35mph I gave it a fast stab of the accelerator pedal and the car revved, didn't really accelerate and then seemed to BANG into gear, was very weird. Was not a transmission slip otherwise it would have redlined, more like an extreme lag then downshift and noticable bang.
. It's not the transmission or motor mounts those were just done. What are some common things to look at on the drive line or actual transmission. The car has no codes at all, none..
what amg do you have, 55 or 63? If it’s a 55, that’s just kinda how they shift… The lag and “bang” you describe sound like supercharger engagement. At 30-35 your rpm’s won’t be high enough to get boost on initial pedal push! You won’t make boost until 2200-2500 rpm and up. At around that rpm the supercharger kicks in and may feel like the “bang” of a downshift.

The clutched sc pulley takes some getting used to. There is a slight amount of “lag” to it. I have a fixed pulley that gives almost instant boost. Boost comes on MUCH sooner than a clutched pulley. I’ll never do clutched again
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Old Nov 16, 2022 | 11:13 AM
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Originally Posted by C_Note
what amg do you have, 55 or 63? If it’s a 55, that’s just kinda how they shift… The lag and “bang” you describe sound like supercharger engagement. At 30-35 your rpm’s won’t be high enough to get boost on initial pedal push! You won’t make boost until 2200-2500 rpm and up. At around that rpm the supercharger kicks in and may feel like the “bang” of a downshift.

The clutched sc pulley takes some getting used to. There is a slight amount of “lag” to it. I have a fixed pulley that gives almost instant boost. Boost comes on MUCH sooner than a clutched pulley. I’ll never do clutched again
Well one thing I did notice is that my locking transmission filler cap is completely missing from the car. I guess I bought it this way and never really looked. So I'm assuming over the years of that missing there has to be some moisture and dirt in the fluid so I just ordered a fluid change kit and I'm going to do that this week. I'm pretty sure it's running on the original fluid for 75,000, miles. For not I added under a half of quart just to be safe till my dipstick arrives. I'm sure the fluid is dirty, burnt and low...lol
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Old Nov 16, 2022 | 12:35 PM
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Originally Posted by Jerseyjules
Well one thing I did notice is that my locking transmission filler cap is completely missing from the car. I guess I bought it this way and never really looked. So I'm assuming over the years of that missing there has to be some moisture and dirt in the fluid so I just ordered a fluid change kit and I'm going to do that this week. I'm pretty sure it's running on the original fluid for 75,000, miles. For not I added under a half of quart just to be safe till my dipstick arrives. I'm sure the fluid is dirty, burnt and low...lol
You may want to also replace the conducter plate and the bushing (electrical connection) as both at this point can be an issue. The bushing can allow trans fluid to migrate up to the TCU and ruin it. Service time for the trans is 40,000 miles. Early is never a problem.
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Old Nov 16, 2022 | 01:15 PM
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Originally Posted by machild
You may want to also replace the conducter plate and the bushing (electrical connection) as both at this point can be an issue. The bushing can allow trans fluid to migrate up to the TCU and ruin it. Service time for the trans is 40,000 miles. Early is never a problem.
What I did observe is that if I go into manual mode in 2nd or 3rd and stab the throttle, no bang or anything, the car just accelerats. In S or C mode of you stab the throttle fast it bangs pretty harsh. Like the transmission is very sluggish and then grabs and the acceleration feels kinda crappy. Of I got WOT it shifts fine then if I let off before redline it seems to hang up in that particular gear till I slow way down...
Is it just that they have crappy feeling transmissions??
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Old Nov 16, 2022 | 01:30 PM
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Things to consider:
-Fluid refresh
-Filter change
-Conductor plate change
-Transmission solenoid O-rings
-Adaptation reset

Adaptation reset is easy to try as a first step

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Old Nov 16, 2022 | 01:32 PM
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Originally Posted by nd-photo.nl
Things to consider:
-Fluid refresh
-Filter change
-Conductor plate change
-Transmission solenoid O-rings
-Adaptation reset

Adaptation reset is easy to try as a first step

https://www.youtube.com/watch?v=_FjX2Yl42t4
Did the reset, still bangs.
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Old Nov 16, 2022 | 01:44 PM
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Originally Posted by Jerseyjules
What I did observe is that if I go into manual mode in 2nd or 3rd and stab the throttle, no bang or anything, the car just accelerats. In S or C mode of you stab the throttle fast it bangs pretty harsh. Like the transmission is very sluggish and then grabs and the acceleration feels kinda crappy. Of I got WOT it shifts fine then if I let off before redline it seems to hang up in that particular gear till I slow way down...
Is it just that they have crappy feeling transmissions??
Certainly the late shift issue as you describe when you let off the throttle is a typical issue with this trans. Also, unpredictalbe upshfts at or near full throttle whether in auto mode or manual. The trans control module mentioned in post #2 in this thread has resolved all of those issues. But, as you have noted, the trans has to be free of issues. A full trans service can make a big difference.
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Old Nov 16, 2022 | 01:47 PM
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Originally Posted by Jerseyjules
Did the reset, still bangs.
Ah ok, too bad. Also see this thread btw:

https://mbworld.org/forums/c32-amg-c...em-solved.html
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Old Nov 16, 2022 | 03:23 PM
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Is this the 5G or 7G?
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Old Nov 16, 2022 | 03:41 PM
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Originally Posted by UncleBenz55
Is this the 5G or 7G?
He has a CLS55, so 5G.
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Old Nov 16, 2022 | 06:08 PM
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I had an issue similar to what you're describing in my 2004 E55. I, meaning the mechanic, replaced the valve body and some other associated component. $2K later, problem solved.
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Old Nov 16, 2022 | 07:41 PM
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Originally Posted by nd-photo.nl
Ah ok, too bad. Also see this thread btw:

https://mbworld.org/forums/c32-amg-c...em-solved.html
I read most of this thread and it sounds like the issue I'm having. I might replace all the solenoids. Might even look for an entire built valve body..I do all my own work and this looks pretty easy, hardest part is getting the car on Jack stands.
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Old Nov 16, 2022 | 07:42 PM
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Originally Posted by JT1982
I had an issue similar to what you're describing in my 2004 E55. I, meaning the mechanic, replaced the valve body and some other associated component. $2K later, problem solved.
Read that thread he linked above. I'm pretty sure some of the solenoids can be problematic and easily swapped out.
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Old Nov 17, 2022 | 10:04 AM
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I will also probably do that the next time I will service my transmission. Also have some jerkiness here and there, but I know from last time the O-rings could be in better shape and then it might be even better to renew the solenoids as they are 17 years old
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Old Nov 17, 2022 | 03:01 PM
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Does anyone know if going from a 30 sidewall rear tire to a 35 effects the shifting that much??
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Old Nov 19, 2022 | 03:01 PM
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So just to update, I got my dipstick tool and was about a quart low. I added a quart and the transmission seems to be shifting much better. I do get that harsh engagement of the Supercharger in 1st gear under certain throttle percentages. If I drive the car normal it feels fine, if I beat the **** out of it it also feels fine. It's when I drove the car anywhere in-between old man going to bingo and meth head police chase, is where it feels kinda wonky. also probably gonna need to do either rear differential mounts or flex discs soon. I feel a little bit of a bang from the rear/underneath when I stab the throttle to a downshift. 🤷🏻‍♂️🤷🏻‍♂️🤷🏻‍♂️
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Old Nov 19, 2022 | 10:08 PM
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Originally Posted by Jerseyjules
So just to update, I got my dipstick tool and was about a quart low. I added a quart and the transmission seems to be shifting much better. I do get that harsh engagement of the Supercharger in 1st gear under certain throttle percentages. If I drive the car normal it feels fine, if I beat the **** out of it it also feels fine. It's when I drove the car anywhere in-between old man going to bingo and meth head police chase, is where it feels kinda wonky. also probably gonna need to do either rear differential mounts or flex discs soon. I feel a little bit of a bang from the rear/underneath when I stab the throttle to a downshift. 🤷🏻‍♂️🤷🏻‍♂️🤷🏻‍♂️
If it was a quart low you should be checking for the leak. It is probably leaking out of the electrical plug. Check to make sure the TCU is not soaked in fluid.

My car has the occasional rough engagement of the SC in first gear at "just the right throttle". It does take a little getting used to.
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