Mercedes-Benz A-Class 2021 Operator's Manual page 160

158 Driving and parking
Activating the start-off assist
& WARNING Risk of skidding and having
an accident from wheels spinning
When you use start-off assist, individual
wheels could spin and you could lose control
of the vehicle.
®
If ESP is deactivated, there is a risk of skid‐
ding and accident!
Make sure that no persons or obstacles
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are in the close vicinity of your vehicle.
Deactivating ESP ® ( page 155).
# /
Move the steering wheel to the straight-
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ahead position.
Depress the brake pedal firmly with your left
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foot and keep it depressed.
Engage the h drive position (
/
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Select the sportiest available drive program
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B or C( page 135).
/
Rapidly depress the accelerator pedal fully.
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Take your foot off the brake, but keep the
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accelerator pedal depressed.
The vehicle pulls away at maximum accelera‐
tion.
Switch on ESP ®
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dure is complete. ESP
able to stabilize the vehicle if the vehicle
starts to skid or a wheel starts to spin.
Canceling the start-off assist
Remove your foot from the accelerator pedal.
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Reactivate the ESP
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ATTENTION ASSIST
Function of ATTENTION ASSIST
ATTENTION ASSIST assists you on long, monoto‐
nous journeys, e.g. on highways and trunk roads.
If ATTENTION ASSIST detects indicators of fati‐
page 139).
gue or increasing lapses in concentration on the
part of the driver, it 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-
rested and attentive driver. On long journeys,
take regular breaks in good time that allow for
adequate recuperation.
You can choose between two settings:
once the acceleration proce‐
R
® will otherwise not be
R
If drowsiness or increasing lapses in concentra‐
tion are detected, the
® .
a Break!
play. You can acknowledge the message and
take a break where necessary. If you do not take
a break and ATTENTION ASSIST continues to
detect increasing lapses in concentration, you
will be warned again after a minimum of
15 minutes.
Standard: normal system sensitivity.
Sensitive: higher system sensitivity. The
driver is warned earlier and the attention
level detected by ATTENTION ASSIST is adap‐
ted accordingly.
ATTENTION ASSIST: Take
warning appears in the Instrument Dis‐