Tranny feels like it's slipping?
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C63
Tranny feels like it's slipping?
I've noticed that the car seems to have an issue shifting. When driving in C mode and at part throttle it will seemingly over rev a bit then finally shift. This happens fairly frequently. The downshifts into 1st and 2nd seem somewhat harsh as well. When in S or S+ it shifts nice and crisp when I'm giving it 3/4 to full throttle. Car is a 2012 with 25k miles. Could it be time for a fluid flush or is this a sign of something more?
Mods are eurocharged v5, long tubes, catless xpipe and row boxes.
Mods are eurocharged v5, long tubes, catless xpipe and row boxes.
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Joined: Feb 2007
Posts: 1,308
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From: Houston - Clear Lake
C63 coupe, Z3M Roadster garage queen
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Joined: Nov 2014
Posts: 2,575
Likes: 407
From: Olathe, KS
'13 C63 AMG P31
I think roadtalontsiwas was trying to figure out if the tune could be the culprit or if it was naturally an issue with the car. The shift points from the tune could affect how jerky the car is. Resetting back to stock could help rule out some things. Though like nkc said, resetting the TCU would be easier/better place to start.
The procedure to reset the ECU is as follows;
1. Turn the igniiton key to the "on" position which is just before you crank the engine to start.
2. Press the accelerator to the floor and hold for 5 seconds.
3. Then turn the key to the off position but do not remove the key, then release the accelerator.
4. Wait at least 2 minutes, the ECU is then reset.
5. ECU is now reset and you are ready to get new rear tyres.
The ECU rest procedure only erases the adaptive transmission and throttle settings. It does not erase any of the fuel, timing or other programming.
Read more: Easiest way to reset my ECU
The procedure to reset the ECU is as follows;
1. Turn the igniiton key to the "on" position which is just before you crank the engine to start.
2. Press the accelerator to the floor and hold for 5 seconds.
3. Then turn the key to the off position but do not remove the key, then release the accelerator.
4. Wait at least 2 minutes, the ECU is then reset.
5. ECU is now reset and you are ready to get new rear tyres.
The ECU rest procedure only erases the adaptive transmission and throttle settings. It does not erase any of the fuel, timing or other programming.
Read more: Easiest way to reset my ECU
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Joined: Dec 2012
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From: NY
E63S | X5
I'd say this is normal for your car. You can reset the TCU doing what insignia said. However, you have a tuned car on headers. Driving characteristics in C mode are quite different than how the car rolled out from the factory. My C mode is a little quirky as well with the slight up-rev before shifting particularly when the car is still cold.
However, all other modes are fine.
However, all other modes are fine.
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Thread Starter
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Joined: Apr 2015
Posts: 78
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C63
PurpleHeart that sounds a lot like my car. I was hoping it wasn't a real issue and it was all in my head. The car behaves quite nice in all other driving modes and is a BEAST when I get on it. Love this thing.
Thanks for all the help guys.
Thanks for all the help guys.
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