Merci2Mercedes

Can anyone tell me what the C/S button on my 2007 E Class does in more detail?

I usually have it set on S, but should I change this for motorway driving etc and does it have any affect on fuel consumption on either setting.

Thanks for reading.

jimbo1763

The C stands for Comfort. Essentially, the transmission skips first gear and shifts at less aggressive RPM's on the other gears.

The S stands for Sport. The transmission works through the entire range of gears and shifts at generally higher RPM's than when it is set at C.

Merci2Mercedes

Thanks for the info/reply.

Stuttgarten

Also, when you're in the C comfort setting and you're backing up, it's a little bit of work for car, as transmission at this point starts in second gear.

Merci2Mercedes

Thanks for info/reply.

ttruex

Should there be any throttle drag while in C vs. S? Most automatics don't provide for engine braking to any great extent, but mine seems to act more like a standard than an automatic, even in C mode. Just curious, as it's my first Mercedes.

When you let up off the gas, it engine brakes, as opposed to coasting along.

SorryAboutThat

^
This should only happen at low speeds, is normal and is supposed to help driving in "stop-and-go" traffic conditions. My understanding is that it's not engine braking. It's the hydraulic brake system automaticly being lightly applied.

symon_say

Mine feels lighter in stop and go traffic in C mode, but C mode gives me worst MPG so i just leave it in S.

AMGAffalterbach

You press it and it redirects you to the search function on the forum