7G Tronic Gearbox problem?
03-17-2010, 03:33 AM
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C63AMG
7G Tronic Gearbox problem?
My gearbox (only when it's cold) doesn't change the gears smoothly as usually did......especially 2gear - 3gear.
I visited local MB service but they told me it's normal after 40000km....
Has anyone the same problem?
I visited local MB service but they told me it's normal after 40000km....
Has anyone the same problem?
03-17-2010, 06:28 AM
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2010 C63, 2003 C230 coupe
I am from Canada, in the winter it can get pretty cold. When its cold gear changes can be rough due to the temperature of fluids, parts...After driving for a while and the engine heats up to normal temperature it runs fine.
03-17-2010, 08:16 AM
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C63s
I have the same problem, even when the car is warmed up, but mine when
changing from 1st to 2nd it lags for about 3-4sec then shifts really hard.
car is at 48000km.
changing from 1st to 2nd it lags for about 3-4sec then shifts really hard.
car is at 48000km.
03-17-2010, 01:35 PM
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2009 C63, 2000 Nissan Maxima
i have the same issue...ONLY the first time i go from 2 -> 3...i have a few stop signs in my area and i only get a hard shift when im pulling out of my driveway to the first stop....
im at only 6600 miles...and always in S
im at only 6600 miles...and always in S
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03-17-2010, 01:57 PM
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C63AMG
I made the B service today and i changed the oil of the gearbox.....
I' ll test it on Saturday....
MB insists that i have no reason to worry about.....
I' ll test it on Saturday....
MB insists that i have no reason to worry about.....
03-17-2010, 03:44 PM
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Porsche 991S, Cayenne S, 1972 BMW 3.0CS E9 Coupe
The fix has been a valve body replacement. You might want to do a search here; I think there are a few TSBs out on this.
03-17-2010, 04:33 PM
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2013 Chevy 427 Torch Red
There have been issues with the 7G Tronic but primarily on non-AMG models. The issues are abrupt shifts from second to first (in S mode) and the 2 to 3rd gear hard (slow) shifts.
The fix has been a valve body replacement. You might want to do a search here; I think there are a few TSBs out on this.
The fix has been a valve body replacement. You might want to do a search here; I think there are a few TSBs out on this.
03-18-2010, 02:54 AM
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c63, prius
this is a normal thingy for electronic throttle and electronic gas pedal....at the beginning i have this problem....but soon after i install the Sprint Booster (electronic gas pedal hack).....i can feel the different in shifting and overall performance....But one thing, i have to warm the car at least 60 degree celcuis...before i go nuts with the car....otherwise i will be having shift delay, or shift shocks, worst case it happen...the car felt like it has a super racing clutch (hopping)....only drove 1800kms on my c63
03-11-2011, 03:47 PM
#16
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Folks,disagree on fluid warm up etc. I was getting hard downshift from 2 to 1 on cold start. Had it into a good dealer, they updated 7G an ECU software with latest and I've been driving it for a month now, all hard shifts cured.
