Mercedes-Benz S-CLASS 2017 Operator's Manual page 151

The engine starts automatically when the driver
wants to pull away again. 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 switch on the engine using the Smart-
Key or the Start/Stop button.
If the engine has been switched off automati-
cally by the ECO start/stop function, the è
ECO symbol is shown in the multifunction dis-
play.
The ECO start/stop function is only available in
drive program E (drive program C on Mercedes-
AMG vehicles).
Automatic engine switch-off
If the vehicle is braked to a standstill with the
transmission in h or i, the ECO start/stop
function switches off the engine automatically.
The ECO start/stop function is operational
when:
the indicator lamp in the ECO button is lit
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green.
the outside temperature is within the range
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that is suitable for the system.
the engine is at normal operating tempera-
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ture.
the set temperature for the vehicle interior
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has been reached.
the battery is sufficiently charged.
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the system does not detect any moisture on
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the windshield when the automatic climate
control is switched on
the hood is closed.
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the driver's door is closed and the driver's
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seat belt is fastened.
All of the vehicle's systems remain active when
the engine is stopped 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.
Mercedes-AMG vehicles: the number of con-
secutive automatic engine switch-offs is unlimi-
ted.
All other models: automatic engine switch-off
can take place a maximum of four times in a row
(initial switch-off, then three subsequent switch-
offs).
Automatic engine start
The engine starts automatically if:
you switch off the ECO start/stop function by
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pressing the ECO button
you switch to drive program S or M
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in transmission position h or i, the brake
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pedal is released and the HOLD function is not
active
you depress the accelerator pedal
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you engage reverse gear k
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you move the transmission out of position j
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you unfasten your seat belt or open the driv-
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er's door
the vehicle starts to roll
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the brake system requires this
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Driving
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