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C63 204 and C63 205 gearboxes?

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Old 12-03-2017, 09:05 AM
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C63 204 and C63 205 gearboxes?

Greetings MB Massive,

In my last C63, A 125 coupe when pushed it would go into limp mode when the gearbox got too hot, VERY Annoying!!

I Now have a New C63 205 and do you know if the fault remains and if so should i get a gearbox sump extension to carry more oil and thus run cooler?

ie this? http://weistec.com/722-9-transmission-pan.html

Cheers RG.

Last edited by H20 MRV; 12-03-2017 at 09:20 AM.
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Old 12-03-2017, 09:40 AM
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Have not noticed any issues what so ever of overheating of the transmission.
Hopefully we can get someone who tracks the W205 to say if it runs too hot.
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Old 12-03-2017, 04:36 PM
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Originally Posted by tekfoc View Post
Have not noticed any issues what so ever of overheating of the transmission.
Hopefully we can get someone who tracks the W205 to say if it runs too hot.
I have not tracked mine but some are and I have not sen this complaint.
Mine runs about 183 deg in normal summer driving and up about 10-12 deg in spirited mountain driving with no limp mode ever.
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Old 12-03-2017, 08:11 PM
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Never had a problem with the trans. Skip that transmission pan, itís a money grab for stock and even tuned power levels. Itís only folks with upgraded turbos pushing over 1000 NM that start to have issues with the trans slipping. And Iím fairly certain itís trans clutch plates need to be beefed up at that point, not this larger capacity pan.
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Old 12-04-2017, 09:56 AM
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Cheers Guys, My old 2012 C63 125 coupe when pushed HARD and driving in manual it would drop in to " Limp" what a pia!!!

is it the same gearbox in the 204 and 205?
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Old 12-04-2017, 11:06 AM
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x
Depending on my driving style my trans sits at about 185 just cruising. If i do a couple pulls depending on my driving style iíve seen my tran temps go up to 210F, most iíve ever seen was 264F and that was after 4 consecutive rolling burnouts 😂
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Old 12-05-2017, 10:23 AM
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wait for the G9 upgrade. no worries then. G9 has enhanced cooling technology for sustained high power operation.
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Old 12-05-2017, 06:41 PM
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Originally Posted by oakmossy View Post
wait for the G9 upgrade. no worries then. G9 has enhanced cooling technology for sustained high power operation.
Whats that then?
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Old 12-07-2017, 06:31 AM
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W204 MCT ist the same (hardware) like in the new W205 C63.
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Old 12-07-2017, 10:59 AM
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9G-Tronic (codename 725.0) is Mercedes-Benz's trademark name for its nine-speed automatic transmission.[1] This transmission was introduced in 2013. It is the world's first nine-speed transmission. It was first used in the Mercedes-Benz S-Class (W222), and it has been expanded to be used in the Mercedes-Benz C-Class (W205) and the sedan and wagon variants of the Mercedes-Benz E-Class (W213). Plug-in hybrid and V12 engine models continue to use the older Mercedes-Benz 7G-Tronic transmission. Wide ratio spread of 9.30:1.
google this tranny to understand the heat transfer improvements. think of riding a bike uphill, with higher gears versus one with more gears to choose from and how that helps you reserve energy. Works the same for machinery. more energy used to propel, more heat generated. nespas?

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