Uh oh... 2-3 shift rpm flare
Thread Starter
Super Member
Joined: May 2017
Posts: 900
Likes: 113
From: Toronto
2012 C63, 2014 E550
Uh oh... 2-3 shift rpm flare
Have been noticing jerkiness in 2-3 shift for a long time, but now the rpm noticeably goes up about 200-300 rpm before the shift. Causes car to jerk a little.
I dont think this is related to any mods, i've had the same mods on for a long time. And only happens during 2-3 upshift. More noticeable under heavy load. Happens in all modes.
Is it simply time for transmission service? Or symptom of a larger problem?
Really worried about this one guys, please any helpful advice is welcome. Smartass comments welcome too
Car is at 110k km, tranny last serviced by previous owner at dealer around 60k. So I'm due for transmission service soon. Really hope that this can fix it and theres nothing wrong inside the transmission.
Edit: I spoke with a mechanic friend, he suspects its an ECU/TCU issue because it's only happening on 2-3 upshift. Or its somewhere in the torque converter, so recommended a fluid change. So its not the end of the world according to him!
I dont think this is related to any mods, i've had the same mods on for a long time. And only happens during 2-3 upshift. More noticeable under heavy load. Happens in all modes.
Is it simply time for transmission service? Or symptom of a larger problem?
Really worried about this one guys, please any helpful advice is welcome. Smartass comments welcome too
Car is at 110k km, tranny last serviced by previous owner at dealer around 60k. So I'm due for transmission service soon. Really hope that this can fix it and theres nothing wrong inside the transmission.
Edit: I spoke with a mechanic friend, he suspects its an ECU/TCU issue because it's only happening on 2-3 upshift. Or its somewhere in the torque converter, so recommended a fluid change. So its not the end of the world according to him!
Last edited by NotABaller; May 14, 2019 at 09:37 AM.
Member
Joined: Feb 2019
Posts: 83
Likes: 8
From: Perth, Western Australia
2010 Ford G6E Turbo / 2013 C63 Coupe - AMG Performance Pack
I had a similar problem with my car since I bought it back in January. Mine would flare about 300 to 400 rpm on the 2nd to 3rd shift for the first few shifts regardless of mode.
I just my car serviced today which included a trans service (56k Klms). Having reported the flare to the mb dealer, they also performed an "adaptation" on the trans. They showed me a printout before/after the adaptation which showed the line pressure increased after the adaptation at two of the three temp measurements and was now in spec. The other temp line pressure was already in spec.
I drove the car home from the dealer this afternoon and the flare had gone. However I'd need to also drive it first thing tomorrow morning to confirm the "adaptation" was a complete success. I also noticed the shifts were a whole lot smoother on all shifts and now there is also virtually no jerkiness which I previously thought was par for the course with this car. Overall I'm impressed with change in the behaviour of transmission.....so much smoother.
Now if there is no flare on the 2nd to 3rd shift in the morning.....I need to load my Eurocharged V7 tune
I just my car serviced today which included a trans service (56k Klms). Having reported the flare to the mb dealer, they also performed an "adaptation" on the trans. They showed me a printout before/after the adaptation which showed the line pressure increased after the adaptation at two of the three temp measurements and was now in spec. The other temp line pressure was already in spec.
I drove the car home from the dealer this afternoon and the flare had gone. However I'd need to also drive it first thing tomorrow morning to confirm the "adaptation" was a complete success. I also noticed the shifts were a whole lot smoother on all shifts and now there is also virtually no jerkiness which I previously thought was par for the course with this car. Overall I'm impressed with change in the behaviour of transmission.....so much smoother.
Now if there is no flare on the 2nd to 3rd shift in the morning.....I need to load my Eurocharged V7 tune
Thread Starter
Super Member
Joined: May 2017
Posts: 900
Likes: 113
From: Toronto
2012 C63, 2014 E550
I had a similar problem with my car since I bought it back in January. Mine would flare about 300 to 400 rpm on the 2nd to 3rd shift for the first few shifts regardless of mode.
I just my car serviced today which included a trans service (56k Klms). Having reported the flare to the mb dealer, they also performed an "adaptation" on the trans. They showed me a printout before/after the adaptation which showed the line pressure increased after the adaptation at two of the three temp measurements and was now in spec. The other temp line pressure was already in spec.
I drove the car home from the dealer this afternoon and the flare had gone. However I'd need to also drive it first thing tomorrow morning to confirm the "adaptation" was a complete success. I also noticed the shifts were a whole lot smoother on all shifts and now there is also virtually no jerkiness which I previously thought was par for the course with this car. Overall I'm impressed with change in the behaviour of transmission.....so much smoother.
Now if there is no flare on the 2nd to 3rd shift in the morning.....I need to load my Eurocharged V7 tune
I just my car serviced today which included a trans service (56k Klms). Having reported the flare to the mb dealer, they also performed an "adaptation" on the trans. They showed me a printout before/after the adaptation which showed the line pressure increased after the adaptation at two of the three temp measurements and was now in spec. The other temp line pressure was already in spec.
I drove the car home from the dealer this afternoon and the flare had gone. However I'd need to also drive it first thing tomorrow morning to confirm the "adaptation" was a complete success. I also noticed the shifts were a whole lot smoother on all shifts and now there is also virtually no jerkiness which I previously thought was par for the course with this car. Overall I'm impressed with change in the behaviour of transmission.....so much smoother.
Now if there is no flare on the 2nd to 3rd shift in the morning.....I need to load my Eurocharged V7 tune
Thanks a lot for the input! Glad to hear that your problem was resolved. Hopefully reset adaptations/trans service will resolve my problem too.
MBWorld Fanatic!
Joined: Jun 2008
Posts: 8,074
Likes: 2,867
From: Los Angeles
2012 P31 C63 Coupe Trackrat, 2019 GLE63S Coupe Beast
Hey man. Are you really sure this is the right car for you? It makes more noises, and smells, and has more quirks than an ordinary car. Maybe - as Kriston helpfully suggested in one of your other similar threads about nothing - you shouldn’t be modifying it. Because it seems that you’re pretty nervous about, well, pretty much everything.
I’m really not trying to be a dïck. You need to relax about your car man, all of this is going to drive you mad.
I’m really not trying to be a dïck. You need to relax about your car man, all of this is going to drive you mad.
Last edited by BLKROKT; May 14, 2019 at 10:27 AM.
Thread Starter
Super Member
Joined: May 2017
Posts: 900
Likes: 113
From: Toronto
2012 C63, 2014 E550
Hey man. Are you really sure this is the right car for you? It makes more noises, and smells, and has more quirks than an ordinary car. Maybe - as Kriston helpfully suggested in one of your other similar threads about nothing - you shouldn’t be modifying it. Because it seems that you’re pretty nervous about, well, pretty much everything.
I’m really not trying to be a dïck. You need to relax about your car man, all of this is going to drive you mad.
I’m really not trying to be a dïck. You need to relax about your car man, all of this is going to drive you mad.
I'm just really worried about even the little stuff... I treat my car really well and want to keep it for a long time. So I'm always listening for sounds, weird stuff etc. Plus i dont have that much experience with car ownership, and this is my daily.
Maybe you guys are right and its causing me too much stress. Really appreciate everything here from the
members, whether in good faith or not.
MBWorld Fanatic!
Joined: Jun 2008
Posts: 8,074
Likes: 2,867
From: Los Angeles
2012 P31 C63 Coupe Trackrat, 2019 GLE63S Coupe Beast
Yeah man, I think we can all tell that the car is stressing you out. It should be something fun that you look forward to driving, not something you’re constantly on alert listening to for weird sounds or get nervous over every clunk. It gets tiring - I know, I’ve been there myself.
IMHO you either need to relax and trust in the German engineering and just enjoy it, or find something simpler.
These are solid cars and you can generally trust them not to break catastrophically if you treat them right (with the headbolt exception of course). Nothing wrong with asking questions, but jeez.... RELAX
IMHO you either need to relax and trust in the German engineering and just enjoy it, or find something simpler.
These are solid cars and you can generally trust them not to break catastrophically if you treat them right (with the headbolt exception of course). Nothing wrong with asking questions, but jeez.... RELAX
Thread Starter
Super Member
Joined: May 2017
Posts: 900
Likes: 113
From: Toronto
2012 C63, 2014 E550
Yeah man, I think we can all tell that the car is stressing you out. It should be something fun that you look forward to driving, not something you’re constantly on alert listening to for weird sounds or get nervous over every clunk. It gets tiring - I know, I’ve been there myself.
IMHO you either need to relax and trust in the German engineering and just enjoy it, or find something simpler.
These are solid cars and you can generally trust them not to break catastrophically if you treat them right (with the headbolt exception of course). Nothing wrong with asking questions, but jeez.... RELAX
IMHO you either need to relax and trust in the German engineering and just enjoy it, or find something simpler.
These are solid cars and you can generally trust them not to break catastrophically if you treat them right (with the headbolt exception of course). Nothing wrong with asking questions, but jeez.... RELAX
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Senior Member
Joined: Apr 2017
Posts: 367
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14 polar white E550
Im also experiencing shift flare and lockup issues with my car . On the stock tune it does it as well as the eurocharged flash , iv done the trans service but didn't notice any difference now i dont know where to begin looking for the problem . I dont know if you guys know but you can adapt each and every shift from up shifts and downshifts. I want to give this a try with star and see if it fixes the problem .
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MBWorld Fanatic!
Joined: Feb 2010
Posts: 5,648
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2012 C63;1971 280SE 3.5(Sold);2023 EQS 450 SUV 4 Matic (Wife's)
Im also experiencing shift flare and lockup issues with my car . On the stock tune it does it as well as the eurocharged flash , iv done the trans service but didn't notice any difference now i dont know where to begin looking for the problem . I dont know if you guys know but you can adapt each and every shift from up shifts and downshifts. I want to give this a try with star and see if it fixes the problem .
Thread Starter
Super Member
Joined: May 2017
Posts: 900
Likes: 113
From: Toronto
2012 C63, 2014 E550
Got my fluid drained and adaptations reset. The 2-3 shift is better now but 3-4 upshift is SUPER slow. Which causes rpm to go up before the shift finishes.
Im still in learning phase I believe, so I really hope this goes away after a few hundred km more
Im still in learning phase I believe, so I really hope this goes away after a few hundred km more
