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W205 c63s transmission crunch sound

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Old Jun 25, 2018 | 02:23 AM
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w205 c63s edition1
W205 c63s transmission crunch sound

Hi all
Does anyone experience the crunch sound coming from transmission when put from park to drive in the morning cold start?
below are the link that shows the sound .

This is 2015 made w205 c63s


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Old Jun 25, 2018 | 08:53 AM
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'13 C63 & AP2 S2000
Bring it to the dealer...?
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Old Jun 25, 2018 | 09:04 AM
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Thanks for reply, but my car is over warranty.so I’m not thinking to take back to the dealer,just want to see if anyone got the same issue . Besides, the car runs well and smooth nothing strange .
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Old Jun 25, 2018 | 05:01 PM
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Do you let it idle down from warming the cats? Sounds unrelated but it allows the fluids to get some heat.
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Old Jun 25, 2018 | 10:03 PM
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2015 C63S ,DME Tune, KW Has ,Kmac Bushings,BC Forged wheels,Gt Rotors,Porterfield R4S,Modal Intake
That doesn't sound good . How many miles/ kilometers are on the vehicle ? Have you had the transmission serviced by a dealer regularly ? How often do you use race mode/ or launch control ?

Problem is they don't sell parts for the transmission only complete units which means "expensive" unless you can find a used transmission .
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Old Jun 25, 2018 | 10:35 PM
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w205 c63s edition1
Originally Posted by Chigs
Do you let it idle down from warming the cats? Sounds unrelated but it allows the fluids to get some heat.
I’ll try to warm up a bit more to see if this issue disappears. This sound is like when park on the hill without using the handbreak straight to P position . And the next time put into Drive , the clutch crunch.
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Old Jun 25, 2018 | 10:50 PM
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Originally Posted by C3504matic
That doesn't sound good . How many miles/ kilometers are on the vehicle ? Have you had the transmission serviced by a dealer regularly ? How often do you use race mode/ or launch control ?

Problem is they don't sell parts for the transmission only complete units which means "expensive" unless you can find a used transmission .
this car is around 6000miles .It’s sencond hand car. So I don’t know the ex owner did to the car. The car condition is very good. Just this issue annoying me . I haven’t had the transmission service by the dealer. Because it’s in low mileage.
In my hand I haven’t launch the car and always in comfort mode.

Ill try to warm up abit more. Let the fluid go through the transmission to see if it reduce to happen.

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Old Jun 26, 2018 | 08:27 AM
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Originally Posted by Johnny ****
Thanks for reply, but my car is over warranty.so I’m not thinking to take back to the dealer,just want to see if anyone got the same issue . Besides, the car runs well and smooth nothing strange .
johny, take it to the dealer and ask them to analyse the problem and quote on rectification. At least you will know what is wrong and it won't cost you anything other than a little time to find out without obligation.
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Old Jun 27, 2018 | 02:50 PM
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As a follow up. Drive it around until everything is warmed up, then shut it down and start it back up to see if the noise is still there. That should clear things up.
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Old Jun 27, 2018 | 03:16 PM
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Its sounds more like the ISM - The selector motor that is bolted to the side of the gearbox. Has it gotten louder over time?
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Old Jun 29, 2018 | 10:03 AM
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w205 c63s edition1
Originally Posted by Chigs
As a follow up. Drive it around until everything is warmed up, then shut it down and start it back up to see if the noise is still there. That should clear things up.
after fews days of trying to warm up more time during morning cold start. This crunch sound is gone. I have also try to warmed up and shut down and start again put into park and then drive. No strange sound.
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Old Jun 29, 2018 | 10:06 AM
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Originally Posted by alexanderfoti
Its sounds more like the ISM - The selector motor that is bolted to the side of the gearbox. Has it gotten louder over time?
it didnt happen every time .and hasn’t got any louder . But I noticed that it would only happen when I didn’t warm up in the morning . Like start engine and drive straight away without any warm up.
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Old Jun 29, 2018 | 12:50 PM
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Is your garage parking on an incline? If so the gearbox can get pre loaded in parking gear. Then when you shift to D or R, it makes a rattling noise.
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Old Jun 29, 2018 | 12:57 PM
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W205 c63s transmission crunch sound

Originally Posted by munis
Is your garage parking on an incline? If so the gearbox can get pre loaded in parking gear. Then when you shift to D or R, it makes a rattling noise.

Foot on brake release "park" brake first then into gear never any noise. I found myself putting the car in gear then release parking brake and crunching noise would happen.especially when on an incline.
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