Do not use the distance control assistant:
R
on slippery roads. The drive wheels may
lose their grip when braking or accelerating
and the vehicle may skid.
R
when there is low visibility, e.g. due to fog,
heavy rain or snow.
If the distance control assistant no longer
detects a vehicle driving in front, the distance
control assistant may accelerate to the stored
speed. On a filter lane or a slip road, this
speed may be too high.
Overview
é
Selects the distance control assistant/
selects cruise control (
Y
page 122)
Ñ
Activates and adjusts current speed/
increases set speed
q
Activates and calls up stored speed/
reduces set speed
È
Selects the speed limiter (
Y
page 120)
o
Deactivates the distance control assis-
tant
The
É
symbol in the on-board computer
shows the status of the distance control assis-
tant by color:
R
gray symbol: the distance control assistant
is selected, but not activated
R
white symbol: the distance control assistant
is activated, but a vehicle in front has not
been detected
R
white symbol with a blue vehicle inside the
symbol: the distance control assistant is
activated and a vehicle in front has been
detected
When a vehicle has been detected up
ahead, the on-board computer also displays
its speed and the distance to the detected
vehicle.
i
The
Assistance
Assistance
menu window also dis-
plays the speed of the detected vehicle and
the distance to the detected vehicle in the
à
Driving menu (
Y
page 76).
Activating
Functions and activation conditions
The distance control assistant controls the
speed and supports you in automatically main-
taining the distance from a vehicle detected in
front. If there is no vehicle in front, the dis-
tance control assistant operates in the same
way as cruise control in the speed range
between 9 and 56 mph (15 and 90 km/h).
If the distance control assistant detects a vehi-
cle in front driving at a slower speed, your
vehicle is slowed and the specified minimum
distance selected by you is maintained.
The distance control assistant brakes the vehi-
cle with the continuous brake if:
R
the vehicle exceeds the set speed, including
the set speed tolerance, e.g. on a downhill
gradient
R
a slower vehicle in front is detected
When the continuous brake slows the vehicle,
the
Ã
indicator lamp lights up in the instru-
ment cluster.
The distance control assistant may also brake
the vehicle using the service brake in order to
maintain the specified minimum distance. If
the vehicle in front is no longer detected, e.g.
if it changes lane, your vehicle will accelerate
up to the set speed.
The distance control assistant cannot be acti-
vated or is deactivated automatically if:
R
you are driving slower than 9 mph
(15 km/h)
R
you shift the transmission into neutral for
more than approximately five seconds
R
you depress the brake pedal
R
you select the reverse gear
R
for vehicles with air suspension, the chassis
is not within the driving level
R
there is a malfunction in the brake system
or in the electronics
R
the distance sensor initialization is not yet
complete
If the distance control assistant is deactivated
automatically, a warning tone sounds.
Driving systems
125
Dr
ivi
ng
mo
de
Z
Summary of Contents for EconicSD
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