C55 "M" mode woes - MBWorld.org Forums

Mar 26, 2015 | 12:59 PM

raphman

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From: SATX

'16 C63s

C55 "M" mode woes

Well, after getting my C55 back after 5 months in the shop, it appears that the "M" mode isn't behaving like it should. It'll actually shift up into the next gear instead of holding whichever gear it's in. Also, in "S" mode, when I tell it to downshift, it'll do so for a split second and then go back to whatever gear it was in or won't downshift at all. Since my car has the Kleemann ECU and TCU tune, I've been told that it's still re-learning everything after the entire car was re-programmed, due to the 5-month issue's resolution.

I'm starting to think my car is a poltergeist or just f-ing hates me.

Mar 26, 2015 | 01:46 PM

husqvarna

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C32AMG

I've also heard of TCU's acting weird from many months sitting with bad battery os disconnected one.

The easyest thing is to reset TCU adaptation with STAR and see if the issue is gone

Mar 26, 2015 | 02:36 PM

Pansu

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"World fastest" C32 AMG

And M-mode was working before shop? TCU tune is also Kleeman or something else?

Mar 26, 2015 | 02:38 PM

raphman

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From: SATX

'16 C63s

Quote:

Originally Posted by Pansu

And M-mode was working before shop? TCU tune is also Kleeman or something else?

Yeah, M mode was fine previously and the TCU tune is Kleemann

Mar 31, 2015 | 01:55 PM

raphman

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From: SATX

'16 C63s

Got it checked out - turns out the switch on the right side (+) was acting up and triggering itself regularly, thus preventing the car from staying in a lower gear.

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