Mercedes-Benz A-Class Operator's Manual page 165

If Active Steering Assist is activated and active
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( page 171).
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If the time has been set incorrectly.
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If you change lanes and vary your speed fre-
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quently in active driving situations.
The ATTENTION ASSIST drowsiness or alertness
assessment is reset and restarted when continu-
ing the journey in the following situations:
You switch o the vehicle.
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If you unfasten your seat belt and open the
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driver's door (e.g. to change drivers or take a
break).
Se Setting A tting ATTENTION ASSIST TTENTION ASSIST
Multimedia system:
© Settings Assistance
4 5 5
Attention Assist
5
Se Setting op tting options tions
Select Standard, Sensitive or Off.
#
Sugg Sugges esting a r ting a res est ar t area ea
Select Suggest Rest Area.
#
Activate or deactivate the function.
#
If ATTENTION ASSIST detects fatigue or
increasing lack of attention, it suggests a rest
area in the vicinity.
Select the suggested rest area.
#
You are guided to the selected rest area.
Speed control cr Speed contr ol cruise contr uise control ol
F F unction of cr unction of cruise contr uise control ol
Cruise control regulates the speed to the value
selected by the driver.
If you accelerate to overtake, for example, the
stored speed is not deleted. If you remove your
foot from the accelerator pedal a er overtaking,
cruise control will resume speed regulation back
to the stored speed.
You can store any speed above 15 mph
(20 km/h) up to the maximum design speed.
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recognize
dangers ( page 155).
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Driving and parking 163
Mer Mercedes‑ cedes‑AMG v AMG vehicles: ehicles: Cruise control is availa-
ble up to a maximum speed of 155 mph
(250 km/h).
Displays in t Display s in the Ins he Instr trument Display ument Display
h (gray): cruise control is selected but not
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yet activated.
h (green): cruise control is active.
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A stored speed appears along with the h dis-
play.
% The segments between the stored speed and
the end of the segment display light up in the
speedometer.
System limits Syst em limits
Cruise control may be unable to maintain the
stored speed on uphill gradients. The stored
speed is resumed when the gradient evens out.
Change into a lower gear in good time on long and
steep downhill gradients. Take particular note of
this when driving a laden vehicle. By doing so, you
will make use of the engine's braking e ect. This
relieves the load on the brake system and pre-
vents the brakes from overheating and wearing
too quickly.
163