Mercedes-Benz 2012 B Class - Manual (Page 139)

The stop/start function is automatically
activated each time you start the engine with
the SmartKey.
If the ECO start/stop function has been
manually deactivated (
Y page 138) or a
malfunction has caused the system to be
deactivated, the ¤ symbol is not
displayed.
Automatic engine switch-off
General notes
The ECO start/stop function is operational
and the ¤ symbol is displayed in the
multifunction display, if:
R
the indicator lamp in the ECO button is lit
green.
R
the outside temperature is within the
comfort range.
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 windshield is
not fogged up when the air-conditioning
system is switched on.
R
the hood is closed.
R
the driver's door is closed and the driver's
seat belt is fastened.
If conditions for automatic engine switch-off
have not been fulfilled, the ¤ symbol will
not be shown.
i All of the vehicle's systems remain active
when the engine has been stopped
automatically.
i The engine can be switched off
automatically a maximum of four times
(first stop and three subsequent stops) in
succession. Automatic engine switch-off is
possible again once the ECO symbol
appears in the multifunction display.
Vehicles with automatic transmission
If the vehicle is braked to a standstill in
D or
N, the ECO start/stop function switches off
the engine automatically.
i 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.
Automatic engine start
General notes
The engine starts automatically if:
R
you switch off the ECO start/stop function
by pressing the ECO button.
R
you engage reverse gear R.
R
the vehicle starts to roll.
R
the brake system requires this.
R
the temperature in the vehicle interior
deviates from the set range.
R
the system detects moisture on the
windshield when the air-conditioning
system is switched on.
R
the condition of charge of the battery is too
low.
R
the driver's seat belt is removed or the
driver's door is opened.
Vehicles with automatic transmission
The engine is started automatically if you:
R
release the brake pedal when HOLD is not
activated and the transmission is in
position
D or N.
R
depress the accelerator pedal.
R
move the transmission out of position P.
i Shifting the transmission to position P
does not start the engine.
i If you shift the transmission from R to D,
the ECO start/stop function is available
Driving
137
Driving and parking
Z