Mercedes E250 W212 (OM651, 7G-Tronic+) – Jerks When Shifting from D or R to N/P
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Mercedes E250 W212 Diesel- OM651
Mercedes E250 W212 (OM651, 7G-Tronic+) – Jerks When Shifting from D or R to N/P
Hey everyone,
I’m having an issue with my 2014 Mercedes E250 CDI (W212, OM651 engine, 7G-Tronic+ transmission) and wanted to get some opinions or advice.
Symptoms:
Work done so far:
Details:
I’m wondering what could be causing these jerks when selecting N or P.
I’m having an issue with my 2014 Mercedes E250 CDI (W212, OM651 engine, 7G-Tronic+ transmission) and wanted to get some opinions or advice.
Symptoms:
- When shifting from R → N/P, there’s a slight jerk.
- When shifting from D → N/P, there’s also a different kind of jerk, feels a bit more noticeable.
- The car drives and shifts fine otherwise.
Work done so far:
- Transmission oil and filter changed (using proper MB spec fluid).
- Transmission mountings replaced.
Details:
- Mileage: 92,000 km
- Transmission: 7G-Tronic+ (722.9)
I’m wondering what could be causing these jerks when selecting N or P.
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Joined: Sep 2018
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From: unbegrenzt
2017 GLE350 4MATIC
You have an old MB transmission, that is the root cause. Normal behavior.
Fluid replacement is the only action that can be tried. Hopefully the conductor plate (mechatronic unit) is not too far gone with clutch plate wear particles.
Fluid replacement is the only action that can be tried. Hopefully the conductor plate (mechatronic unit) is not too far gone with clutch plate wear particles.
Out Of Control!!
Joined: Apr 2019
Posts: 11,957
Likes: 6,796
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Hey everyone,
I’m having an issue with my 2014 Mercedes E250 CDI (W212, OM651 engine, 7G-Tronic+ transmission) and wanted to get some opinions or advice.
Symptoms:
Work done so far:
Details:
I’m wondering what could be causing these jerks when selecting N or P.
I’m having an issue with my 2014 Mercedes E250 CDI (W212, OM651 engine, 7G-Tronic+ transmission) and wanted to get some opinions or advice.
Symptoms:
- When shifting from R → N/P, there’s a slight jerk.
- When shifting from D → N/P, there’s also a different kind of jerk, feels a bit more noticeable.
- The car drives and shifts fine otherwise.
Work done so far:
- Transmission oil and filter changed (using proper MB spec fluid).
- Transmission mountings replaced.
Details:
- Mileage: 92,000 km
- Transmission: 7G-Tronic+ (722.9)
I’m wondering what could be causing these jerks when selecting N or P.
Does this happen at normal running temperature or only while cold?
How is the engine idle Rpm control ??
Thread Starter
Member
Joined: Sep 2023
Posts: 130
Likes: 5
Mercedes E250 W212 Diesel- OM651
The temperature doesn’t seem to make any difference, the jerk happens both when the car is cold and when it’s fully warmed up. Basically, any time I stop at a light or park and shift into N or P, I feel that small jerk.
Also, could you please explain what you meant by “engine idle RPM control”? I didn’t quite understand that part. RPM is normal though.
Out Of Control!!
Joined: Apr 2019
Posts: 11,957
Likes: 6,796
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Thanks for the reply!
The temperature doesn’t seem to make any difference, the jerk happens both when the car is cold and when it’s fully warmed up. Basically, any time I stop at a light or park and shift into N or P, I feel that small jerk.
Also, could you please explain what you meant by “engine idle RPM control”? I didn’t quite understand that part. RPM is normal though.
The temperature doesn’t seem to make any difference, the jerk happens both when the car is cold and when it’s fully warmed up. Basically, any time I stop at a light or park and shift into N or P, I feel that small jerk.
Also, could you please explain what you meant by “engine idle RPM control”? I didn’t quite understand that part. RPM is normal though.
It should be low. Report actual value at operating temp.
Running A/C will raise engine Rpm and help create the mild jolt you report.
I doubt your engine mounts are bad already on 92k 4Cyl. Diesel
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Member
Joined: Sep 2023
Posts: 130
Likes: 5
Mercedes E250 W212 Diesel- OM651
Out Of Control!!
Joined: Apr 2019
Posts: 11,957
Likes: 6,796
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
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Out Of Control!!
Joined: Apr 2019
Posts: 11,957
Likes: 6,796
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
