7G Transmission Questions - 2006 E500
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Joined: Apr 2024
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2006 E500, 1985 280TE
7G Transmission Questions - 2006 E500
Just got a 2006 E500, 93K miles, no information on transmission service history.
I have a couple of transmission question, searched the forum, but wondering what the current views / options are …
The Good:
Thanks!
Herman The German
I have a couple of transmission question, searched the forum, but wondering what the current views / options are …
The Good:
- When the transition is warmed-up, it is buttery smooth in ‘C’ mode,
- The manual down-shifts / ‘manual kick-downs’ via the ‘-‘ direction on the drive selector lever work great for gears 6, 5, 4, and 3.
- When the transmission is cold, the first 2-3 minutes only, there are hard, jerky shifts into 2nd gear, including some ‘unnecessary’ down shifts in to 2nd gear and delayed up-shifts into 3rd gear.
- Any manual down-shift / 'manual kick-down' via the ‘-‘ direction on drive selector lever into 2nd gear are always hard and jerky, even when the transmission is warmed up. Can’t really ever use the transmission for that.
- Will a transmission fluid services help?
- What other transmission repair would help?
- Will it get worse over time?
- Just live with it?
Thanks!
Herman The German
Junior Member
Joined: Oct 2022
Posts: 17
Likes: 9
W211 E500
Herman,
Any shop with a half decent diagnostic tool will be able to read transmission codes - first prize for DAS of course. It may be one of the internal speed sensors that failed. Ask me how I know.
If you are lucky you may have a place that reconditions the board/module in your region else you'll have to replace as sensors are soldered/crimped in. I had mine done a few months ago after transmission started doing weird things. I thought it was fluid related (just didn't feel right) but my indy ran a quick scan 'just in case' and found intermittent sensor issues - can't remember the codes. All good after fix.
Any shop with a half decent diagnostic tool will be able to read transmission codes - first prize for DAS of course. It may be one of the internal speed sensors that failed. Ask me how I know.
If you are lucky you may have a place that reconditions the board/module in your region else you'll have to replace as sensors are soldered/crimped in. I had mine done a few months ago after transmission started doing weird things. I thought it was fluid related (just didn't feel right) but my indy ran a quick scan 'just in case' and found intermittent sensor issues - can't remember the codes. All good after fix.
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Joined: Apr 2021
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From: San Jose, CA
11 E550, 16 AMG GTS, 13 S550
Inspect transmission mount, it's made of simple rubber and degrades at around that time which introduces play/unfortunate driveshaft angle too. It's $20 and two hours labor.
Transmission service never hurts, cold flow usually isn't great but it worsens over time for sure. The OEM pour isn't synthetic so it doesn't age as well as it should for 60k mile interval in my experience. Combine that with a new filter, panbolts, and you're golden.
I have this available
https://www.amsoil.com/p/amsoil-oe-m...tf/?zo=7236674
Use the link in my sig for 25% off
Transmission service never hurts, cold flow usually isn't great but it worsens over time for sure. The OEM pour isn't synthetic so it doesn't age as well as it should for 60k mile interval in my experience. Combine that with a new filter, panbolts, and you're golden.
I have this available
https://www.amsoil.com/p/amsoil-oe-m...tf/?zo=7236674
Use the link in my sig for 25% off
__________________
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Chris Tran, Retired Alpha European Autotech Owner
Amsoil Independent Dealer #7236674
Alpha European Autotech
Purchase Amsoil at 25% off from me
Chris Tran, Retired Alpha European Autotech Owner
Amsoil Independent Dealer #7236674
Member
Joined: Oct 2017
Posts: 86
Likes: 11
From: Charlottesville, Virginia, USA.
2004 W211 E320 Sport
My 04 E320- Sport (not a 4-Matic) does same, and has been for about 10,000 miles (has 124,000). i had the 100,000 mile service, including gearbox flush, etc.
There's a more definitive thread on this problem somewhere in here that offers some solutions. Seems many folks just live with it, but it is profoundly annoying. Jerks for first 10 min or so.
I'm all ears to any solution that costs less than the car is worth (not much).
There's a more definitive thread on this problem somewhere in here that offers some solutions. Seems many folks just live with it, but it is profoundly annoying. Jerks for first 10 min or so.
I'm all ears to any solution that costs less than the car is worth (not much).
MBWorld Fanatic!
Joined: May 2022
Posts: 1,917
Likes: 499
From: The Netherlands
2005 CLS55 AMG W219 C219
It can help, but if it remains, then something else is going on. I dont know a lot about the 7G, but a bit more about the 5G 
I swapped the PWM solenoid with a OE new one. All O-rings from the other solenoids, the 2 filters and 2 strainers in the bottom part of the valve body.
PWM solenoid info: https://mbworld.org/forums/c32-amg-c...em-solved.html
More pics: https://mbworld.org/forums/c219/8443...ml#post8956930
I swapped the PWM solenoid with a OE new one. All O-rings from the other solenoids, the 2 filters and 2 strainers in the bottom part of the valve body.PWM solenoid info: https://mbworld.org/forums/c32-amg-c...em-solved.html
More pics: https://mbworld.org/forums/c219/8443...ml#post8956930
