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the lane markings are worn away, dark or cov-
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ered up, e.g. by dirt or snow
the distance to the vehicle in front is too small
R
and the lane markings thus cannot be detec-
ted
the lane markings change quickly, e.g. lanes
R
branch off, cross one another or merge
the road is narrow and winding
R
there are highly variable shade conditions on
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the road
Activating Lane Keeping Assist
Activate Lane Keeping Assist using the on-
X
board computer; to do so, select
Adaptive
Adaptive
(
page 291).
Y
If you drive at speeds above 60 km/h and lane
markings are detected, the lines in the assis-
tance graphic display (
shown in green. Lane Keeping Assist is ready
for use.
Standard
If
Standard
Standard
is selected, no warning vibration
occurs if:
you have switched on the turn signals. In this
R
case, the warnings are suppressed for a cer-
tain period of time.
a driving safety system intervenes, such as
R
®
ABS, BAS or ESP
.
Adaptive
When
Adaptive
Adaptive
is selected, no warning vibra-
tion occurs if:
you have switched on the turn signals. In this
R
case, the warnings are suppressed for a cer-
tain period of time.
a driving safety system intervenes, such as
R
®
ABS, BAS or ESP
.
you accelerate hard, e.g. kickdown.
R
you brake hard.
R
you steer actively, e.g. swerve to avoid an
R
obstacle or change lane quickly.
you cut the corner on a sharp bend.
R
In order that you are warned only when neces-
sary and in good time if you cross the lane mark-
ing, the system detects certain conditions and
warns you accordingly.
Standard
Standard
or
page 290) are
Y
The warning vibration occurs earlier if:
you approach the outer lane marking on a
R
bend
the road has very wide lanes, e.g. a motorway
R
the system detects solid lane markings
R
The warning vibration occurs later if:
the road has narrow lanes
R
you cut the corner on a bend
R
Active Driving Assistance package
General notes
The Active Driving Assistance package consists
of DISTRONIC PLUS (
Y
Spot Assist (
page 247) and Active Lane Keep-
Y
ing Assist (
page 250).
Y
Active Blind Spot Assist
General notes
Active Blind Spot Assist monitors the areas on
either side of the vehicle that are not directly
visible to the driver with two lateral, rear-facing
radar sensors. A warning lamp lights up in the
exterior mirrors and draws your attention to
vehicles detected in the monitored area. If you
then switch on the corresponding turn signal to
change lanes, you will also receive a visual and
audible collision warning. If a risk of side impact
is detected, corrective braking may help you
avoid a collision. Active Blind Spot Assist eval-
uates the free space in the direction of travel
and to the side before making a course-correct-
ing brake application. For this, Active Blind Spot
Assist uses the forward-facing radar sensors.
Active Blind Spot Assist supports you from a
speed of approximately 30 km/h.
Important safety notes
Active Blind Spot Assist is only an aid and is not
a substitute for attentive driving.
G
WARNING
Active Blind Spot Assist does not react to
vehicles:
overtaking too closely on the side, placing
R
them in the blind spot area
if the difference in the speed of approach
R
and overtaking is too great
Driving systems
page 207), Active Blind
247
Z
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