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If Active Distance Assist DISTRONIC detects a
faster-moving vehicle in front, it increases the
driving speed to the set speed.
Selecting the drive program
Active Distance Assist DISTRONIC supports a
sporty driving style when you have selected the
S or S+, drive program (Y page 145). Accelera-
tion behind the vehicle in front or to the set
speed is then noticeably more dynamic. If you
have selected the C or E driving program, the
vehicle accelerates more gently. This setting is
recommended in stop-and-start traffic.
Changing lanes
If you change to the overtaking lane Active Dis-
tance Assist DISTRONIC supports you if:
R
you are driving faster than 45 mph (70 km/h)
R
you switch on the appropriate turn signal
R
Active Distance Assist DISTRONIC does not
currently detect a danger of collision
If these conditions are fulfilled, your vehicle is
accelerated. Acceleration will be interrupted if
changing lanes takes too long or if the distance
between your vehicle and the vehicle in front
becomes too small.
When you change lanes, Active Distance Assist
DISTRONIC monitors the left lane on left-hand-
drive vehicles or the right lane on right-hand-
drive vehicles.
Stopping
G
WARNING
If you leave the driver's seat when the vehicle
is only being braked by Active Distance Assist
DISTRONIC, it could roll away:
R
if there is a malfunction in the system or in
the voltage supply
R
if Active Distance Assist DISTRONIC is
deactivated using the cruise control lever,
for example by a vehicle occupant or from
outside the vehicle
R
if the electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with
R
if the battery is disconnected
R
if the vehicle is accelerated, e.g. by a vehi-
cle occupant
There is a risk of an accident.
Always deactivate Active Distance Assist
DISTRONIC and secure the vehicle against
rolling away before you leave it.
Further information on deactivating Active Dis-
tance Assist DISTRONIC (Y page 167).
If Active Distance Assist DISTRONIC detects
that the vehicle in front is stopping, it brakes
your vehicle until it is stationary.
Once your vehicle is stationary, it remains sta-
tionary and you do not need to depress the
brake.
After a time, the electric parking brake secures
the vehicle and relieves the service brake.
Depending on the specified minimum distance,
your vehicle will come to a standstill at a suffi-
cient distance behind the vehicle in front. The
specified minimum distance is set using the
control on the cruise control lever.
When Active Distance Assist DISTRONIC is acti-
vated, the transmission is shifted automatically
to position j if:
R
the driver's seat belt is not fastened and the
driver's door is open
R
the engine is switched off, unless it is auto-
matically switched off by the ECO start/stop
function
The electric parking brake is applied automati-
cally if Active Distance Assist DISTRONIC is
active when the vehicle is stationary and:
R
a system malfunction occurs
R
the power supply is insufficient
If a malfunction occurs, the transmission may
also be shifted to position j automatically.
Setting a speed
X
Push the cruise control lever up : for a
higher speed or down ; for a lower speed.
X
To adjust the set speed in 1 mph incre-
ments (1 km/h increments): briefly push
the cruise control lever up : or down ; to
the pressure point.
Every time the cruise control lever is pressed
up : or down ; the last speed stored is
increased or reduced.
X
To adjust the set speed in 5 mph incre-
ments (10 km/h increments): briefly push
Driving systems
165
Driving and parking
Z
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