M275 V12 Bi-Turbo Platform Technical discussion relating to models sharing the M275 V12 Bi-Turbo (V12 TT). Including SL600, SL65 AMG, CL600, CL65 AMG, S600, S65 AMG.
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Transmission swap: Delayed gear engagement and rough shifting

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Old 12-05-2018, 09:06 PM
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2004 S600
Transmission swap: Delayed gear engagement and rough shifting

Hello, my name is Derek. I own a 2004 s600, and recently had to replace the original transmission (110k miles) with a used tested transmission from a private seller that originally came from a wrecked 2001 cl600 (42k miles).

After the transmission swap I noticed:
  1. There was a delay when shifting from park to reverse.
  2. When driving the car still jerks when changing gears.
  3. Car is extremely sluggish.
After researching online it was suggested to have the transmission adaptations reset by Mercedes Benz via star. I just picked my car up today and although it feels slightly different I am still experiencing the same issues I was before. If anybody can help or has suggestions I’d greatly appreciate it.
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SaadKamran (11-13-2022)
Old 12-08-2018, 04:25 PM
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CL600
You installed the transmission from a 367 hp car to a 500 hp car. You need transmission model 722.649.
Old 11-13-2022, 10:53 AM
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2011
Delayed shift

Did it get better with time? I assume that its the transmission relearning and the new fluids causing that. I just got my c300 2008 back on road by swapping same model/submodel/year transmission from a wreck car and the same thing is happening to me right now, even after driving car for 40 miles
Old 11-15-2022, 01:35 AM
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CL 600 '00 5.8L V12
It takes a long time before the transmission has learned your driving style (might be 400 miles, might be 2000 miles). It this problem stays, I'd recommend replacing/repairing the valve body. Check out Sonnax 722.6 on this

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