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270 Driving and parking
In the following situations, the vehicle is held by
transmission position j and/or by the electric
parking brake:
The seat belt is unfastened and the driver's
R
door is opened.
The vehicle is switched off.
R
There is a system malfunction.
R
The power supply is insufficient.
R
In addition, the
Brake immediately
appear in the driver's display and a horn tone may
sound at regular intervals.
Immediately depress the brake pedal firmly
#
until the warning message disappears.
The HOLD function is deactivated.
Additionally secure the vehicle against rolling
#
away.
Function of Hill Start Assist
Hill Start Assist holds the vehicle for a short time
when pulling away on a hill under the following
conditions:
The transmission is in position h or k.
R
The electric parking brake is released.
R
This gives you enough time to move your foot
from the brake pedal to the accelerator pedal and
depress it before the vehicle begins to roll away.
& WARNING Risk of accident and injury due
to the vehicle rolling away
After a short time, Hill Start Assist no longer
holds the vehicle.
message may
Swiftly move your foot from the brake
#
pedal to the accelerator pedal. Do not
leave the vehicle when it is being held by
Hill Start Assist.
Function of Adaptive Brake Lights
Adaptive Brake Lights warn following traffic in an
emergency braking situation with the following
actions:
flashing the brake lamps
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activating the hazard warning lights
R
(
page 173)
/
If the vehicle is braked sharply from speeds above
50 km/h, the brake lamps flash rapidly. This pro-
vides traffic travelling behind you with an even
more noticeable warning.
ATTENTION ASSIST
Function of ATTENTION ASSIST with microsleep
detection
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The sub-function microsleep detection
depends on the country and is only available
in conjunction with the driver camera
(
page 374).
/
ATTENTION ASSIST assists you on long, monoto-
nous journeys, e.g. on motorways and trunk
roads. If indicators of fatigue or increasing lapses
in concentration on the part of the driver are
detected, the system suggests taking a break.
ATTENTION ASSIST is only an aid. It cannot
always detect fatigue or lapses in concentration in
time. The system is not a substitute for a well-res-
ted and attentive driver. On long journeys, take
regular breaks in good time that allow for ade-
quate recuperation.
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