Automatic Engine Switch-Off - Mercedes-Benz 2015 M-Class Operator's Manual

Driving
162
ECO start/stop function (all vehicles
except the ML 250 BlueTEC 4MATIC)
Introduction
This section describes the ECO start/stop
function for all vehicles except the ML 250
BlueTEC 4MATIC. Information about the ECO
start/stop function on the ML 250 BlueTEC
4MATIC ( page 164).
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The ECO start/stop function switches the
engine off automatically if the vehicle is stop-
ped under certain conditions.
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
:
If the ¤ symbol is shown in green in the
multifunction display, the ECO start/stop
function switches the engine off automati-
cally if the vehicle stops moving.
Every time you switch on the engine using the
SmartKey or the Start/Stop button, the ECO
start/stop function is activated.
If the ECO start/stop function has been man-
ually deactivated ( page 163) or a malfunc-
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tion has caused the system to be deactivated,
the ¤ symbol is not displayed.
AMG vehicles: the ECO start/stop function
is only available in drive program C.
For further information on automatic engine
switch-off ( page 162) and automatic
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engine start ( page 163).
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Automatic engine switch-off

If the vehicle is braked to a standstill in D or N,
the ECO start/stop function switches off the
engine automatically.
The ECO start/stop function is operational
and the ¤ symbol is displayed in green in
the multifunction display, if:
the indicator lamp in the ECO button is lit
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green.
no off-road program has been selected.
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the outside temperature is within the range
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that is suitable for the system.
the engine is at normal operating temper-
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ature.
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 detects that the windshield is
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not fogged up when the air-conditioning
system 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.
If conditions for automatic engine switch-off
have not been fulfilled, the ¤ symbol will
be shown in yellow.
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All of the vehicle's systems remain active
when the engine has been stopped auto-
matically.
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The HOLD function can be activated if the
engine has been switched off automati-
cally. It is then not necessary to continue
applying the brakes during the automatic