The ECO start/stop function switches the
engine off automatically if the vehicle is stopped
under certain conditions.
When pulling away again, the engine starts auto-
matically. The ECO start/stop function thereby
helps you to reduce the fuel consumption and
emissions of your vehicle.
Important safety notes
G
WARNING
If the engine is switched off automatically and
you exit the vehicle, the engine is restarted
automatically. The vehicle may begin moving.
There is a risk of accident and injury.
If you wish to exit the vehicle, always turn off
the ignition and secure the vehicle against
rolling away.
General notes
:
ECO start/stop display
The ECO start/stop function is activated when-
ever you start the engine using the key or the
Start/Stop button.
If the
è
ECO symbol is shown in green in the
multifunction display, the ECO start/stop func-
tion switches the engine off automatically once
the vehicle stops moving.
If the ECO start/stop function has been man-
ually deactivated (
Y
page 163) or a malfunction
has caused the system to be deactivated, the
è
ECO symbol is not displayed.
Mercedes-AMG vehicles: the ECO start/stop
function is only available in drive programs
Comfort and Slippery.
Automatic engine switch-off
If the vehicle is braked to a standstill with the
transmission in D or N, the ECO start/stop func-
tion switches off the engine automatically.
The ECO start/stop function is operational and
the
è
ECO symbol is displayed in green in the
multifunction display, if:
R
the indicator lamp in the ECO button is lit
green
R
none of the off-road programs are selected
R
the outside temperature is within the range
that is suitable for the system
R
the engine is at normal operating temperature
R
the set temperature for the vehicle interior
has been reached
R
the battery is sufficiently charged
R
the system detects that the windscreen is not
misted up when the air-conditioning system is
switched on
R
the bonnet is closed
R
the driver's door is closed and the driver's
seat belt is fastened
If the conditions for automatic engine switch-off
are not all met, the
è
ECO symbol is shown in
yellow.
All of the vehicle's systems remain active when
the engine is switched off automatically.
The HOLD function can be activated if the
engine has been switched off automatically. It is
then not necessary to continue applying the
brakes during the automatic stop phase. When
you depress the accelerator pedal, the engine
starts automatically and the braking effect of
the HOLD function is deactivated.
All vehicles (except Mercedes-AMG vehi-
cles): automatic engine switch-off can take
place a maximum of four times in a row (initial
switch-off, then three subsequent switch-offs).
The
è
ECO symbol is shown in yellow in the
multifunction display after the engine has been
started automatically for the fourth time. When
the
è
ECO symbol is shown in green in the
multifunction display, automatic engine switch-
off is again possible.
Mercedes-AMG vehicles: the number of con-
secutive automatic engine stops is unlimited.
Automatic engine start
The engine is started automatically if:
R
you switch off the ECO start/stop function by
pressing the ECO button
R
in transmission position D or N, the brake
pedal is released and the HOLD function is not
active
162
Driving
Driving
and
parking
