Mercedes-Benz SLC 300 2019 Operator's Manual page 124

Driving
122
starts automatically and the braking effect of
the HOLD function is deactivated.
Automatic engine start
The engine starts automatically if:
you switch off the ECO start/stop function
R
by pressing the ECO button
you release the brake pedal in transmission
R
position h or i and the HOLD function is
not active
you depress the accelerator pedal
R
you engage reverse gear k
R
you move the transmission out of position
R
j
you switch to drive program S+
R
you unfasten your seat belt or open the driv-
R
er's door
the vehicle starts to roll
R
the brake system requires this
R
the temperature in the vehicle interior devi-
R
ates from the set range
the system detects moisture on the wind-
R
shield when the air-conditioning system is
switched on
the battery's condition of charge is too low
R
Shifting the transmission to position j does
not start the engine.
Deactivating or activating the ECO
start/stop function
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 vehicle stops.