Mercedes-Benz C-CLASS Operator's Manual page 143

All other models
To deactivate: press ECO button :.
X
Indicator lamp ; goes out.
To activate: press ECO button :.
X
Indicator lamp ; lights up.
If indicator lamp ; is off, the ECO start/stop
function has been deactivated manually or as
the result of a malfunction. The engine will then
not be switched off automatically when the vehi-
cle stops.
Selecting drive program S+ deactivates the ECO
start/stop function. If you press ECO button :,
the ECO start/stop function is activated.
AMG performance exhaust system
can be selected (Mercedes-Benz
C 450 AMG 4MATIC, Mercedes-AMG
vehicles)
You can choose between different AMG Per-
formance exhaust system volumes using the
position of the exhaust flap.
Problems with the engine
Problem
The engine does not
start.
Possible causes/consequences and M Solutions
The HOLD function or DISTRONIC PLUS is activated.
Deactivate the HOLD function (
X
( page 168).
Y
Try to start the engine again (
X
Each time you start the engine with the Smart-
Key or the Start/Stop button, the quietest set-
ting is activated.
Setting the volume:
Press button :.
X
If you select the loudest setting, indicator
lamp lights up ;.
You can also adjust the position of the exhaust
flap using the:
DYNAMIC SELECT switch (
R
Mercedes-AMG vehicles: multimedia sys-
R
tem
page 176) or DISTRONIC PLUS
Y
page 137).
Y
Driving
141
page 143)
Y
Z