2013 E350 722.9 2-3 Shift Jolt After Fluid Service + Adaptation Reset — Valve Body or
Thread Starter
Newbie
Joined: Apr 2026
Posts: 4
Likes: 0
w212 e350
2013 E350 722.9 2-3 Shift Jolt After Fluid Service + Adaptation Reset — Valve Body or
Hi everyone,
I have a 2013 Mercedes-Benz E350 RWD with the 722.9 7G-Tronic transmission, around 67k miles.
The issue is a noticeable shift jolt, mainly during the 2-3 shift around 2,000–3,000 rpm, often around 2,500 rpm. Before service, I also felt it during harder acceleration and around 40–50 mph. After the transmission service, the higher gears feel much smoother, and E mode is generally better, but the 2-3 shift jolt is still noticeable under moderate throttle.
Recent work done:
Does this sound like normal 722.9 behavior/adaptation relearning after service, or does this point more toward valve body / solenoid / conductor plate issues?
Since the pan was clean and there are no codes or slipping, I’m trying to decide whether to keep driving it and let it relearn, or whether I should have the valve body/solenoids checked.
Any advice from people familiar with the 722.9 would be appreciated.
If the repair fee is more than 1500 dollars, I perfer to buy another w211 or w212. Thx!
I have a 2013 Mercedes-Benz E350 RWD with the 722.9 7G-Tronic transmission, around 67k miles.
The issue is a noticeable shift jolt, mainly during the 2-3 shift around 2,000–3,000 rpm, often around 2,500 rpm. Before service, I also felt it during harder acceleration and around 40–50 mph. After the transmission service, the higher gears feel much smoother, and E mode is generally better, but the 2-3 shift jolt is still noticeable under moderate throttle.
Recent work done:
- Transmission fluid and filter/pan service
- Adaptation reset/relearn
- Shop said the transmission pan looked normal
- No excessive metal debris or clutch material found
- No fault codes
- No limp mode
- No slipping or delayed engagement
- Shift adaptations were far out of spec
- Dealer recommended transmission service first, then adaptation reset
- Overall shifting improved
- Higher gears are much smoother
- E mode is mostly okay
- S mode and moderate/deeper throttle still make the 2-3 shift more noticeable
Does this sound like normal 722.9 behavior/adaptation relearning after service, or does this point more toward valve body / solenoid / conductor plate issues?
Since the pan was clean and there are no codes or slipping, I’m trying to decide whether to keep driving it and let it relearn, or whether I should have the valve body/solenoids checked.
Any advice from people familiar with the 722.9 would be appreciated.
If the repair fee is more than 1500 dollars, I perfer to buy another w211 or w212. Thx!
Junior Member
Joined: Sep 2024
Posts: 17
Likes: 6
E350 W212
Relearning will take longer time, that’s ONLY if the adaptation was done correctly, which is not always the case. They had to go through all steps required, including torque converter settings.
Do you experience harsh shifting during turning at the traffic lights from let’s say first gear to the second?
The engine itself needs to effectively communicate with transmission and perform at its optimal level. If you happen to have, let’s say, underperforming fuel system, or dirty intake, or clogged PCV, or “lazy” sensor, you will be surprised how impactful it can be at miscommunication with the transmission.
Another solution that someone might suggest in the responses is to disintegrate the Mercedes smart yo-yo charging function so the voltage drop doesn’t occur. The idea is interesting and likely to give you some improvements to your issue, however, is strictly experimental and usually voids the warranty.
At the end of the day, transmission should be shifting smoothly without any mods, and transmission itself is not necessarily the reason for what you experience. The engine needs to be fully serviced, far beyond regular maintenance or dealer-recommended “oils”.
Do you experience harsh shifting during turning at the traffic lights from let’s say first gear to the second?
The engine itself needs to effectively communicate with transmission and perform at its optimal level. If you happen to have, let’s say, underperforming fuel system, or dirty intake, or clogged PCV, or “lazy” sensor, you will be surprised how impactful it can be at miscommunication with the transmission.
Another solution that someone might suggest in the responses is to disintegrate the Mercedes smart yo-yo charging function so the voltage drop doesn’t occur. The idea is interesting and likely to give you some improvements to your issue, however, is strictly experimental and usually voids the warranty.
At the end of the day, transmission should be shifting smoothly without any mods, and transmission itself is not necessarily the reason for what you experience. The engine needs to be fully serviced, far beyond regular maintenance or dealer-recommended “oils”.
Out Of Control!!
Joined: Apr 2019
Posts: 11,793
Likes: 6,693
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
engine + tranny response
OP you have done everything the tranny needed. The "722.9-7G+" is extraordinarily cleaver to match the engine throttle demands.
The engine throttle itself is more spongy than firm and sharp.
You can clean the intake oil out of the MAP sensor (M276 3.5 NA).
The unsettled engine driveability in lower gears (1;2;3;4) and low Rpms (< 2000R.) is 100% caused by the engine setup and 0% the transmission that as a result can hardly decide on what gear to best match the engine.
There is nothing more you can do to tranny that will help the engine stock response.
> 50% + 50% = throttle lag
The unstable chassis voltage feature is in this for 50%.
The remaining 50% is the engine high blow-by.
The stock combination is a lean-laggy throttle the TCU can hardly ever match.
Deal with the GDI engine not the great TCU.
(GDI Turbo ECU run of a MAF and feature an improved PCV System to work blow-by.)
Both detuning factors (voltage + blow-by) are set to become increasingly worse. This makes the chassis response feel super heavy instead of light, nimble and responsive like any good car.
> Snow-ball combination....
The ECU laggy throttle is the lean adaptation of air + gas mixture combustion. The ratio is hardly controlled on either side with drafty cylinders, jittery ignition and glitchy power supply. Fix that and tranny will shift 100% seemlessly better than stock.
> Chain of actions--reactions :
marginal combustions > lean mixtures > laggy throttle > poor gear adaptations > funny shifts.
The extreme version of detuned mixtures are the fish bites lean misfires near idle that drive great tranny stupid.
> Focus on target...
You can adapt everything available or stay focused to recognize what you're dealing with.
You shouldn't expect matching shifts with spongy throttle. Go up the ladder where combustions events are computed.
My 1-2nd gear shift now gets precise Rpm match instead slippery. Fan stays off: no extreme heat!
The engine throttle itself is more spongy than firm and sharp.
You can clean the intake oil out of the MAP sensor (M276 3.5 NA).
The unsettled engine driveability in lower gears (1;2;3;4) and low Rpms (< 2000R.) is 100% caused by the engine setup and 0% the transmission that as a result can hardly decide on what gear to best match the engine.
There is nothing more you can do to tranny that will help the engine stock response.
> 50% + 50% = throttle lag
The unstable chassis voltage feature is in this for 50%.
The remaining 50% is the engine high blow-by.
The stock combination is a lean-laggy throttle the TCU can hardly ever match.
Deal with the GDI engine not the great TCU.
(GDI Turbo ECU run of a MAF and feature an improved PCV System to work blow-by.)
Both detuning factors (voltage + blow-by) are set to become increasingly worse. This makes the chassis response feel super heavy instead of light, nimble and responsive like any good car.
> Snow-ball combination....
The ECU laggy throttle is the lean adaptation of air + gas mixture combustion. The ratio is hardly controlled on either side with drafty cylinders, jittery ignition and glitchy power supply. Fix that and tranny will shift 100% seemlessly better than stock.
> Chain of actions--reactions :
marginal combustions > lean mixtures > laggy throttle > poor gear adaptations > funny shifts.
The extreme version of detuned mixtures are the fish bites lean misfires near idle that drive great tranny stupid.
> Focus on target...
You can adapt everything available or stay focused to recognize what you're dealing with.
You shouldn't expect matching shifts with spongy throttle. Go up the ladder where combustions events are computed.
My 1-2nd gear shift now gets precise Rpm match instead slippery. Fan stays off: no extreme heat!
Last edited by CaliBenzDriver; Apr 26, 2026 at 01:49 PM.
Thread Starter
Newbie
Joined: Apr 2026
Posts: 4
Likes: 0
w212 e350
Thanks, I really appreciate the detailed explanation.
I agree that the relearning process depends a lot on whether the adaptation procedure was completed correctly. I’m not completely sure if all steps were done, including torque converter adaptation, so I will follow up with the shop.
To answer your question, I do notice the shift behavior more in low-speed situations, including light acceleration after turning or in stop-and-go traffic. The 1-2 shift has improved quite a bit after the service, and overall the higher gears feel smoother now.
However, I still notice some hesitation or jolt around 40–50 mph, especially when accelerating onto the highway. That part still feels somewhat similar to before.
Today I picked up OEM oil and filter and plan to do an engine oil change, and also check the spark plugs. I’m hoping improving the engine side (combustion and throttle response) might help overall drivability and how the transmission behaves.
At this point I plan to keep everything stock and continue observing how it adapts.
Thanks again — this gives me a clearer direction.
I agree that the relearning process depends a lot on whether the adaptation procedure was completed correctly. I’m not completely sure if all steps were done, including torque converter adaptation, so I will follow up with the shop.
To answer your question, I do notice the shift behavior more in low-speed situations, including light acceleration after turning or in stop-and-go traffic. The 1-2 shift has improved quite a bit after the service, and overall the higher gears feel smoother now.
However, I still notice some hesitation or jolt around 40–50 mph, especially when accelerating onto the highway. That part still feels somewhat similar to before.
Today I picked up OEM oil and filter and plan to do an engine oil change, and also check the spark plugs. I’m hoping improving the engine side (combustion and throttle response) might help overall drivability and how the transmission behaves.
At this point I plan to keep everything stock and continue observing how it adapts.
Thanks again — this gives me a clearer direction.
Thread Starter
Newbie
Joined: Apr 2026
Posts: 4
Likes: 0
w212 e350
Thank you for the detailed analysis; I fully understand your points.
I agree with your perspective: throttle response and the engine's overall operating characteristics indeed have a significant impact on the perceived feel of gear shifts—particularly in lower gears. I find the assertion that "unstable engine output makes it difficult for the transmission to precisely time its shifts" to be very logical.
As for my specific vehicle, following the transmission service and reset, the shifting performance between 1st and 2nd gear has improved significantly, and the overall shifting sensation in higher gears feels much smoother as well. However, I still notice a slight hesitation or jerkiness when the vehicle speed reaches approximately 40–50 mph—especially during moderate acceleration.
Based on your recommendations, I intend to proceed by conducting a more thorough investigation into potential engine-related issues. My plan is to perform an oil change using OEM parts, inspect the condition of the spark plugs, and then re-evaluate the situation.
At this time, I do not intend to make any modifications to the vehicle's charging system or other components; I prefer to keep the vehicle in its original, factory state, focusing instead on ensuring that all parts function normally and efficiently, exactly as they were designed to do.
Once I have completed the maintenance on the engine side, I will continue to monitor the vehicle's performance to see if driving smoothness improves even further. I hope to resolve this issue successfully so that I can fully enjoy driving the car.
Thank you again for your valuable insights.
I agree with your perspective: throttle response and the engine's overall operating characteristics indeed have a significant impact on the perceived feel of gear shifts—particularly in lower gears. I find the assertion that "unstable engine output makes it difficult for the transmission to precisely time its shifts" to be very logical.
As for my specific vehicle, following the transmission service and reset, the shifting performance between 1st and 2nd gear has improved significantly, and the overall shifting sensation in higher gears feels much smoother as well. However, I still notice a slight hesitation or jerkiness when the vehicle speed reaches approximately 40–50 mph—especially during moderate acceleration.
Based on your recommendations, I intend to proceed by conducting a more thorough investigation into potential engine-related issues. My plan is to perform an oil change using OEM parts, inspect the condition of the spark plugs, and then re-evaluate the situation.
At this time, I do not intend to make any modifications to the vehicle's charging system or other components; I prefer to keep the vehicle in its original, factory state, focusing instead on ensuring that all parts function normally and efficiently, exactly as they were designed to do.
Once I have completed the maintenance on the engine side, I will continue to monitor the vehicle's performance to see if driving smoothness improves even further. I hope to resolve this issue successfully so that I can fully enjoy driving the car.
Thank you again for your valuable insights.
Out Of Control!!
Joined: Apr 2019
Posts: 11,793
Likes: 6,693
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
best genuine ignition
When you're ready to inspect your sparkplugs replace the coils BOOTS and consider also new SPARKPLUGS so you don't need to duplicate the same steps again.
Timely ignition is one the very most essential steps of combustion. Everything else is related to ignition power stroke. Unstable voltage directly affect GDI spark timings.
I agree there is value in keeping everything stock - At least you don't need to get your tranny rebuilt to figure out it was unnecessary.
Tranny matches engine performance.
Timely ignition is one the very most essential steps of combustion. Everything else is related to ignition power stroke. Unstable voltage directly affect GDI spark timings.
I agree there is value in keeping everything stock - At least you don't need to get your tranny rebuilt to figure out it was unnecessary.
Tranny matches engine performance.
Last edited by CaliBenzDriver; Yesterday at 01:58 AM.
Thread Starter
Newbie
Joined: Apr 2026
Posts: 4
Likes: 0
w212 e350
When you're ready to inspect your sparkplugs replace the coils BOOTS and consider also new SPARKPLUGS so you don't need to duplicate the same steps again.
Timely ignition is one the very most essential steps of combustion. Everything else is related to ignition power stroke. Unstable voltage directly affect GDI spark timings.
I agree there is value in keeping everything stock - At least you don't need to get your tranny rebuilt to figure out it was unnecessary.
Tranny matches engine performance.
Timely ignition is one the very most essential steps of combustion. Everything else is related to ignition power stroke. Unstable voltage directly affect GDI spark timings.
I agree there is value in keeping everything stock - At least you don't need to get your tranny rebuilt to figure out it was unnecessary.
Tranny matches engine performance.
Trending Topics
Out Of Control!!
Joined: Apr 2019
Posts: 11,793
Likes: 6,693
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
NO Perfect World...
Thx for your mention, I just made the oil change right now, but the problem still exists. I only plan to hold onto it for a few months, so I'll just stick to routine maintenance during that time.
Hope I can find a better one in the future. To be honest, I'm quite disappointed this time; I'll probably have to be more careful when choosing a car.
Hope I can find a better one in the future. To be honest, I'm quite disappointed this time; I'll probably have to be more careful when choosing a car.
Even the best Japanese cars have major engine recalls with ultra thin lubricants.
The reality is every system disfunction so less options need less repairs:
- AirMatic airbags
- 4Matic shafts
- DistronicPlus radar
- Blind-Spots sensors
- ABS/ESP sensors
- Start-Stop batteries
- Keyless CAN network
- Direct Fuel Injection
- Turbos wastegate control
- Wiper arms angle
- Electric parking brake!
- Bosch variable battery charge
- ....
Last edited by CaliBenzDriver; Today at 01:08 PM.
MB World Stories
The Best of Mercedes & AMG
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Mercedes Teases Updated EQS With Steer-By-Wire and a Yoke
Verdad Gallardo
8 Mercedes Models With Poor Reliability Records
Verdad Gallardo
