transmission
Thread Starter
Senior Member
Joined: Feb 2012
Posts: 369
Likes: 7
From: IA
2018 C63s Coupe 2016 C450 DAILY
transmission
took my car in today for a diagnosis of transmission issues . I noticed as did the service advisor that upon slowing down it has a rough shift in gears, almost like a lag or slippage, they ran codes today nothing came back andthe service manager test drove it and stated he didn't find anything. Any idea what could be wrong? they changed tranny fluid but not the torque converter, MBUSA stated its not required.
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MBWorld Fanatic!
Joined: Feb 2004
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From: SEATTLE WASHINGTON USA
'08 C300 Lux Barolo Red Beige Leather P2 MM 18" wheels '84 944
took my car in today for a diagnosis of transmission issues . I noticed as did the service advisor that upon slowing down it has a rough shift in gears, almost like a lag or slippage, they ran codes today nothing came back andthe service manager test drove it and stated he didn't find anything. Any idea what could be wrong? they changed tranny fluid but not the torque converter, MBUSA stated its not required.
I wish I had remembered the modified pan and overflow tube because I would have paid to have that installed while they were at it. After the service I notice that shift quality is improved and upshifts are better spaced so I think they zeroed out the trans software while they were at it.
Very pleased.
I also instructed them to install a TPMS repair kit in my LF wheel since it's been losing about 1psi per day. After tightening down the external nut many times (which worked) it was time to fix it once and for all until the battery dies.
Thread Starter
Senior Member
Joined: Feb 2012
Posts: 369
Likes: 7
From: IA
2018 C63s Coupe 2016 C450 DAILY
Originally Posted by Benzo11
So what was the problem? I am facing a similar issue on my '13 E250 4Matic that only has 3500 miles on it. Thanks.
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Thread Starter
Senior Member
Joined: Feb 2012
Posts: 369
Likes: 7
From: IA
2018 C63s Coupe 2016 C450 DAILY
Originally Posted by Acapulco Bill
Get the 7G TCU software update? For all 7GTronics built until early 2010 fabrication.
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Junior Member
Joined: Feb 2013
Posts: 36
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From: Perth Australia
2012 C250
Well I had my first "A" service on my 2012 C250 and they applied free of charge (though they did charge $100 for a computer check!?) the Transmission reflash. Wow it is a completely different car and now a pleasure to drive. Subsequently have fitted a "PedalBox" drive by wire throttle module which even on the lowest sport setting is awesome - even when the car itself is in eco(default) mode. Sweet!
