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722.9, a bit hard/jerky shift between 2 and 3 gear.

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E-Class (W211) 2003-2009

722.9, a bit hard/jerky shift between 2 and 3 gear.

 
Old 03-15-2017, 03:55 AM
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W211 E500 -04
722.9, a bit hard/jerky shift between 2 and 3 gear.

I have a 2005 E500 with the 722.9 transmission and I have started to notice a bit hard or jerky shifts between the 2 and 3 gear. All other shifts are super smooth and "glides" unnoticed through the shifts. But between 2 and 3 i can feel that it shifts harder. It's like you when you release the clutch a bit early on a manual car and you feel that the car "breaks" a short bit and you are pushed a little bit forward. I hope you understand what I mean.

The car has been driven 94 000 km. I have had it since 84 000km and I changed the transmission fluid and filter at about 85 000 km. Genuine mercedes filter and the fuchs fluid. It had the updated pan so I guess it had been changed before also. I did not have the ability to change the fluid in the torque converter, so only dropped the pan and got about 6-7 liter out I think.

It isn't something that make the driving experience bad. The only thing that bothers me is if this indicates that something is wrong and have to be fixed.

Do you have any idea if I need to do something?
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Old 03-15-2017, 11:33 AM
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Try reset see here: http://www.mercedesmedic.com/reset-m...-instructions/ if this fails have someone pull codes with DAS (MB diagnostic system) could be valve body or worst case mechanical cause.

Last edited by konigstiger; 03-15-2017 at 11:43 AM.
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Old 03-16-2017, 03:41 AM
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W211 E500 -04
Originally Posted by konigstiger View Post
Try reset see here: http://www.mercedesmedic.com/reset-m...-instructions/ if this fails have someone pull codes with DAS (MB diagnostic system) could be valve body or worst case mechanical cause.
Thanks a lot!

I did the reset, both with key in and key out as per description on the mercedesmedic site. Did not fix it unfortunatly.

I have a MaxiECU diagnostic system and have some adaptation options as per image below. Can some of those be worth trying?

Also, it did discover some fault codes:
7G tronic:
DTC
2350 intermittent fault in CAN communication with central gateway.

EWM - gear selector fault codes:


7G tronic adaptations:


Also worth noticing is that I do not know when fault codes where read last time and if they ever in the lifetime of the car has been erased.
I have also activated the dyno testmode (deactivate EPS, ABS etc) a few times to be able to have some fun in the snow here, if that could throw of some codes maybe.

Do you still think I need to get a hold of a DAS system? Only available at the dealership here what I know of.

Last edited by Faniskogen; 03-16-2017 at 04:48 AM.
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Old 03-16-2017, 11:18 AM
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IMHO have independent, or dealer (if this is your only choice) pull fault codes using MB diagnostics.
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Old 03-18-2017, 11:21 AM
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My suggestion is to find a shop or someone with DAS/Xentry and look at adaptation values. IF you have no cel and you've done your trans services then it may be
something internal/mechanical inside transmission going bad. Adaptation values will tell you immediately if it's something mechanical. IF values are within spec may be a soon to be faulty conductor plate or valve body.
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Old 03-28-2017, 10:06 AM
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W211 E500 -04
Originally Posted by konigstiger View Post
IMHO have independent, or dealer (if this is your only choice) pull fault codes using MB diagnostics.
Thank you, I will try that.

Originally Posted by cmriv View Post
My suggestion is to find a shop or someone with DAS/Xentry and look at adaptation values. IF you have no cel and you've done your trans services then it may be
something internal/mechanical inside transmission going bad. Adaptation values will tell you immediately if it's something mechanical. IF values are within spec may be a soon to be faulty conductor plate or valve body.
No CEL, had a faulty CPS a couple of weeks ago but that is fixed and fault codes erased.
Will try and check the codes with DAS/xentry at dealer. Thank you! I hope it doesn't turn out to be anything serious.

Bought the car with low miles in hopes there would not be any major fault developed. Serviced the trans fluid just in case even though it was previously changed. And now it may be problems with the tranny anyway
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Old 05-14-2019, 05:06 PM
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CLS500 AMG package 2006, CL600 2002, SLK230 kompressor 2003 sold, E500 2004 sold, BMW 335xi M sport
Did you resolve this issue? my car has a rough shift between almost all gears I'm at 87k miles, and this started since 26k miles.
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