2015 C300 Transmission Not Shifting Smoothly
Thread Starter
Newbie
Joined: Jun 2015
Posts: 5
Likes: 2
2015 C300
2015 C300 Transmission Not Shifting Smoothly
Anyone else's transmission not shifting smoothly from a stop? Especially noticeable when not up to full operating temp. Shift to 3rd is very abrupt on first drive of the morning. Later, you can feel every shift 1-2, 2-3, 3-4 gear, not abrupt, but shifts similar to a lazy manual transmission shift with pauses between each gear. Does not shift smoothly or crispy and certainly not "seamlessly" as it is so often referred to in road tests. Had it back to the dealer twice. They reflashed the computer the first time resulting in little improvement. The 2nd time they said they could not duplicate the problem and everything checked out OK. Similar loaner cars they gave me while mine was in the shop shifted fine.
Thread Starter
Newbie
Joined: Jun 2015
Posts: 5
Likes: 2
2015 C300
Trans not shifting smoothly
The car currently has 3,000 miles on it. At 1,400 miles (2nd service visit) they recommended that I drive it more and see if it didn't improve since trans is adaptive. 1,600 miles later it may have improved only slightly, if at all.
Thread Starter
Newbie
Joined: Jun 2015
Posts: 5
Likes: 2
2015 C300
Not shifting smoothly
They installed the latest software update (which I didn't have) on service visit #1, but it made little or no difference. I hope the Fall release will be better.
My first suspicion is software too, but still not sure it's all of the problem in this case. I have driven 2 2015 C300 loaner cars with no shifting problems. Regardless, it's not acceptable for any new car these days, especially a Mercedes, "The Best or Nothing".
My first suspicion is software too, but still not sure it's all of the problem in this case. I have driven 2 2015 C300 loaner cars with no shifting problems. Regardless, it's not acceptable for any new car these days, especially a Mercedes, "The Best or Nothing".
Trending Topics
Senior Member
Joined: Mar 2011
Posts: 366
Likes: 8
From: SF Bay Area
CLA-250, C-300
I am starting to notice some bad behavior from the transmission too. I was going to take the BMS off in the am. to isolate that.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
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
Newbie
Joined: Aug 2015
Posts: 4
Likes: 4
2015 C300 sedan
2015 C300 Transmission not shifting smoothly
I have exactly the same problem with my new 2015 C300 base model just bought a month ago and currently has about 450 miles. First of all, I didn't pay attention but after a while and the more i drive the car appeared to sluggish from shift 1-3 and it's really noticeable. I just called service and scheduled to bring my car in next week to have them check it out. While waiting, I have decided to find out if any one out there is having the same problem like me, and I saw this post, so I am not the only one is having the problem with 2015 MB C300 but others does. It's really a problem with the C300 2015 model and I do want to see how's Mercedes address this issue. This is my first time to purchase the MB. I used to have a BMW and their transmission on gear shifting is seamless from low gear 1-3 and to up gear 4-6 and back and forth is very smooth and very quick; you don't see any jump between deceleration and acceleration. Anyway, will comeback and update for any finding. Stay tune.
MBWorld Fanatic!
Joined: Jan 2015
Posts: 2,075
Likes: 59
From: Manchester, UK
BMW e89 Z4 sDrive 35i & MB S205 C200 AMG Premium Plus
There's another larger thread about this. Mine is improved after a recent update but I'm told there's another update coming soon about this.
Newbie
Joined: Aug 2015
Posts: 4
Likes: 4
2015 C300 sedan
C300 Transmission shftting issues
of there's an up to fix the transmission issue how come Mercedes never send any letter in regarding to an update. This is a software update for transmission is not shftting smoothly issue
Member
Joined: Feb 2015
Posts: 159
Likes: 5
C300
I agree Mercedes should do that. They usually call everything "Normal" and "part of the design" until you complain enough. They're probably the worst maker of anything to be proactive at advising customers of concerns they're working on or fixes.
Newbie
Joined: Aug 2015
Posts: 4
Likes: 4
2015 C300 sedan
just got my car back after updating software. it doesn't seem the problem is fixed. The transmission is shifting not smoothly, kind of a little bit sluggish from D2-D3; it's like you driving a stick shift car. Don't know why Mercedes tweak the car that way.
Super Member
Joined: Aug 2014
Posts: 600
Likes: 4
From: Sunshine State
2015 C300 RWD
KevinTeo, did you notice any changes after the software updates? Did they do engine ECU or only tranny? Thanks in advance
Newbie
Joined: Aug 2015
Posts: 4
Likes: 4
2015 C300 sedan
They told me the software update is something to improve the control between the engine ECO and transmission. No, don't see any changes after software update at all. I don't understand WHY MB won't be able to make the D2-D3 gear changes smoothly. It looks like a delay cause you feel you lose power in a second and then you feel a jump when it reach to D4. The whole feeling is kind of annoyance over time. Like I said, it's like a stick shift feeling not an automatic transmission.
it's a luxury car, the design is beautiful both interior and exterior but the driving like low end car, even some low end car like toyota camry still much better transmission than a MB. First time with MB and a last time with MB. My next car will definitely not MB.
it's a luxury car, the design is beautiful both interior and exterior but the driving like low end car, even some low end car like toyota camry still much better transmission than a MB. First time with MB and a last time with MB. My next car will definitely not MB.
MBWorld Fanatic!
Joined: Jan 2015
Posts: 2,075
Likes: 59
From: Manchester, UK
BMW e89 Z4 sDrive 35i & MB S205 C200 AMG Premium Plus
They told me the software update is something to improve the control between the engine ECO and transmission. No, don't see any changes after software update at all. I don't understand WHY MB won't be able to make the D2-D3 gear changes smoothly. It looks like a delay cause you feel you lose power in a second and then you feel a jump when it reach to D4. The whole feeling is kind of annoyance over time. Like I said, it's like a stick shift feeling not an automatic transmission.
it's a luxury car, the design is beautiful both interior and exterior but the driving like low end car, even some low end car like toyota camry still much better transmission than a MB. First time with MB and a last time with MB. My next car will definitely not MB.
it's a luxury car, the design is beautiful both interior and exterior but the driving like low end car, even some low end car like toyota camry still much better transmission than a MB. First time with MB and a last time with MB. My next car will definitely not MB.
Newbie
Joined: Aug 2019
Posts: 3
Likes: 2
2015 mercedes c300
Do you still have rough transmission ?
Hello guys I have 2015 Mercedes c300 certified preowned from fletcher jones California. Car had 32.000 miles when purchased. I was looking online if there is other people experience the same issue I have now. I saw this post and i knew I wasn’t alone.
my car shifting very noticeable from 1-2 and 2-3 gears you definitely feel it sometimes I feel like I am driving a American muscle car. During comfort mode when I drive normally shifting between gears is very hard I went to fletcher jones told them about the issue and they said there is nothing wrong about the car car had 40.000 service last month and still they say everything is correct with the car. Do you guys still have this noticible shifting issue?
my car shifting very noticeable from 1-2 and 2-3 gears you definitely feel it sometimes I feel like I am driving a American muscle car. During comfort mode when I drive normally shifting between gears is very hard I went to fletcher jones told them about the issue and they said there is nothing wrong about the car car had 40.000 service last month and still they say everything is correct with the car. Do you guys still have this noticible shifting issue?
Senior Member
Joined: Jul 2019
Posts: 286
Likes: 140
From: Bay Area, CA
2016 C300W4 (W205), Luxury Pkg, Diamond Silver Met. and Silk Beige\Espresso Interior
Others have had this issue corrected by having the valve body in the transmission replaced. Of course the dealership needs to be convinced of this before they will take any action.
I've noticed with my 2016 that if I stay on the gas through the shifts it will shift relatively hard, especially from 2-3. If I feather the pedal at each shift point it smooths out. I've developed a sort of muscle memory to where I can "feel" when it's about to shift and then let off the gas slightly for a second until the shift is complete.
I've noticed with my 2016 that if I stay on the gas through the shifts it will shift relatively hard, especially from 2-3. If I feather the pedal at each shift point it smooths out. I've developed a sort of muscle memory to where I can "feel" when it's about to shift and then let off the gas slightly for a second until the shift is complete.
Newbie
Joined: Aug 2019
Posts: 3
Likes: 2
2015 mercedes c300
Thank you for the replay
3 times I told the fletcher jones service about the issue. I don’t really enjoy when I drive my car. I still have the warranty. I don’t know if I still need to talk to service. But definitely there is something wrong with it.
3 times I told the fletcher jones service about the issue. I don’t really enjoy when I drive my car. I still have the warranty. I don’t know if I still need to talk to service. But definitely there is something wrong with it.
Junior Member
Joined: Nov 2023
Posts: 24
Likes: 3
2013 GLK250
2013 GLK shifter issue
My 2013 GLK 250 has same shifter issue from Park ( P) to Drive (D) or Reverse ( R) during winter time during cold start only. This never occurs after driving for some time in winter days. It is a cold start issue after overnight parked in our driveway. This issue occurring occasionally during cold days only. I have asked my MB dealership to check the transmission fluid level and condition , main battery and everything found OK. I have to run the engine in idle for my GLK for a longer time prior to shift from P to D or R when this issue occur now. It works after long idle run and stop the engine and restart again to shift from P to D or R. I am not sure this a long term solution or not. This issue started after emission recall repairs done by MB on February 2022. I am not sure this issue related to this repair or not. Any suggestions to resolve this issue ?
MBWorld Fanatic!
Joined: Jun 2012
Posts: 1,229
Likes: 188
From: Toronto
2022 E53 AMG
This is a common issue on the 7G and 7G+ transmission. To find out if it's actually the transmission you need to see if it gets worse once the transmission get's warm? If it resolves after the transmission get's warm, then nothing is wrong with the transmission but more closer to a cold transmission related issue. Remember the car always started in 2nd gear for fuel savings and the transmission needs time to raise in temperature and will be effect not just because of colder weather.
In my car they resolved the problems I was having as my car was jerking into the 2-3 gear when the transmission got to operating temperature. Since my car has the AMG 7G+ transmission, they had to reach out to AMG Germany and sent my transmission file. It was found the the Torque Sensor was bad even though it was a new car when I bought it.
In my car they resolved the problems I was having as my car was jerking into the 2-3 gear when the transmission got to operating temperature. Since my car has the AMG 7G+ transmission, they had to reach out to AMG Germany and sent my transmission file. It was found the the Torque Sensor was bad even though it was a new car when I bought it.
MBWorld God!
Joined: Dec 2019
Posts: 32,222
Likes: 6,278
This is a common issue on the 7G and 7G+ transmission. To find out if it's actually the transmission you need to see if it gets worse once the transmission get's warm? If it resolves after the transmission get's warm, then nothing is wrong with the transmission but more closer to a cold transmission related issue. Remember the car always started in 2nd gear for fuel savings and the transmission needs time to raise in temperature and will be effect not just because of colder weather.
In my car they resolved the problems I was having as my car was jerking into the 2-3 gear when the transmission got to operating temperature. Since my car has the AMG 7G+ transmission, they had to reach out to AMG Germany and sent my transmission file. It was found the the Torque Sensor was bad even though it was a new car when I bought it.
In my car they resolved the problems I was having as my car was jerking into the 2-3 gear when the transmission got to operating temperature. Since my car has the AMG 7G+ transmission, they had to reach out to AMG Germany and sent my transmission file. It was found the the Torque Sensor was bad even though it was a new car when I bought it.
Junior Member
Joined: Nov 2023
Posts: 24
Likes: 3
2013 GLK250
2013 GLK 250 issue
This is a common issue on the 7G and 7G+ transmission. To find out if it's actually the transmission you need to see if it gets worse once the transmission get's warm? If it resolves after the transmission get's warm, then nothing is wrong with the transmission but more closer to a cold transmission related issue. Remember the car always started in 2nd gear for fuel savings and the transmission needs time to raise in temperature and will be effect not just because of colder weather.
In my car they resolved the problems I was having as my car was jerking into the 2-3 gear when the transmission got to operating temperature. Since my car has the AMG 7G+ transmission, they had to reach out to AMG Germany and sent my transmission file. It was found the the Torque Sensor was bad even though it was a new car when I bought it.
In my car they resolved the problems I was having as my car was jerking into the 2-3 gear when the transmission got to operating temperature. Since my car has the AMG 7G+ transmission, they had to reach out to AMG Germany and sent my transmission file. It was found the the Torque Sensor was bad even though it was a new car when I bought it.
Last edited by Roger Rajah; Dec 15, 2023 at 03:05 PM.
MBWorld God!
Joined: Dec 2019
Posts: 32,222
Likes: 6,278
My GLK had a shifter issue from Park to Drive or Reverse in a cold start and completely resolved after new ISM replaced by MB dealership. I still have jerk shifting in lower gears ( 2-3 ) during cold start . This issue doesn't occur after driving for some time. It is only a cold start issue. MB dealership looks into this few times and keeping my GLK blue tech for overnight testing and could not solve it. I am able to live this issue due to this issue only occurring in cold start ( 194K and over 10 years old). Any suggestions or recommendations.
