Changing C,M,S mode while driving harmful to engine??
08-22-2014, 11:33 PM
#27
Super Member
If you choose to follow the manual, it only says to change FROM C, S, S+ to M while stopped, so I read it that switching between the different automatic modes, or from M to any other mode while moving is fine. Just not switching from C, S, or S+ to M. But do whattcha want, by all means. Put cooking oil in the fuel tank. I personally don't switch to M unless stopped, but hey, I'm crazy like that and choose to believe the content of the manual might actually have been generated for a reason (let the "lawyers wrote the manual" debate begin!).
08-08-2016, 12:57 PM
#28
Could either of you explain in detail what you mean in detail? I drove an S65 W221 recently and changed from C to S while cruising at 50mph (or maybe it was to M, I can't recall) and right afterwards I noticed the car had gone into limp home mode. No flooring, no fanfare or clunks. I assumed something else was wrong with the car.
The manual says not to put it into Manual mode while driving... is there actually a connection b/n M mode while driving and limp home?
Last edited by edwardscpa; 08-08-2016 at 01:00 PM.
08-08-2016, 01:18 PM
#29
Could either of you explain in detail what you mean in detail? I drove an S65 W221 recently and changed from C to S while cruising at 50mph (or maybe it was to M, I can't recall) and right afterwards I noticed the car had gone into limp home mode. No flooring, no fanfare or clunks. I assumed something else was wrong with the car.
The manual says not to put it into Manual mode while driving... is there actually a connection b/n M mode while driving and limp home?
The manual says not to put it into Manual mode while driving... is there actually a connection b/n M mode while driving and limp home?
08-08-2016, 01:30 PM
#31
Senior Member
Originally Posted by Monky
The only thing I noticed is sometimes when in "C" doing a low speed and putting it into "S" it changes down to 1st and jolts the car quite heavily, I don't think it's great to downshift to 1st anyway, I don't do it a manual car for example when coming to traffic / stop lights I just go to 2nd and dip the clutch, don't think great in an auto unless going really slow but just my 2c
08-08-2016, 02:12 PM
#32
MBWorld Fanatic!
I think he means that in a manual transmission car rather than downshifting from 2nd to 1st at a stop light he just pushes clutch in and then stops.
08-08-2016, 02:13 PM
#33
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2012 P31 C63 Coupe Trackrat, 2019 GLE63S Coupe Beast
I like my clutches with guacamole
08-08-2016, 04:42 PM
#35
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2014 C63 Edition 507
I will switch to S from C, only after the motor has warmed up sufficiently. One of the reasons i love the AMG Performance Media option 
I will normally do it at a stop, because i like feeling the little pulse sensation the car goes through. While it is slight, it is detectable and warns me that the car is coming to life.
I will normally do it at a stop, because i like feeling the little pulse sensation the car goes through. While it is slight, it is detectable and warns me that the car is coming to life.
08-08-2016, 05:55 PM
#36
MBWorld Fanatic!
I will switch to S from C, only after the motor has warmed up sufficiently. One of the reasons i love the AMG Performance Media option
I will normally do it at a stop, because i like feeling the little pulse sensation the car goes through. While it is slight, it is detectable and warns me that the car is coming to life.
I will normally do it at a stop, because i like feeling the little pulse sensation the car goes through. While it is slight, it is detectable and warns me that the car is coming to life.
08-08-2016, 08:23 PM
#37
Member
Me: "WTF? Why isn't it shifting and what are those red lights in the tach!?".
TC
ETA: I have selected between S+ and C while moving with no ill effects but I was loping along when I made the change. I would never "select" M while moving but I have hit the paddles which moves you into M with no ill effects. I've been moving ever so slightly while I selected S/S+ and got the clunk to first gear. I didn't like that so I make sure I am stopped completely before changing the mode now.
Last edited by AA717driver; 08-08-2016 at 08:38 PM.
