Operation Manual

R
there are no, several or unclear lane markings
for a lane, e.g. in areas with road construction
work
R
the lane markings are worn away, dark or cov-
ered up, e.g. by dirt or snow
R
the distance to the vehicle in front is too small
and the lane markings thus cannot be detec-
ted
R
the lane markings change quickly, e.g. lanes
branch off, cross one another or merge
R
the road is narrow and winding
R
there are strong shadows cast on the road
Activating/deactivating Lane Keeping
Assist
X
To activate: press button ;.
Indicator lamp : lights up. The Lane Keep‐
ing Assist On message appears in the mul-
tifunction display. If all conditions have been
satisfied, there may be a warning.
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lines in the assistance graphics display
(
Y page 246) are shown in green. Lane Keep-
ing Assist is ready for use.
X
To deactivate: press button ;.
Indicator lamp : goes out. Lane Keeping
Assist is deactivated. The Lane Keeping
Assist Off message appears in the multi-
function display.
Selecting Standard or Adaptive setting
X
In the DriveAssist menu on the on-board
computer, select the Lane
Keeping Assist
function (Y page 248).
X
Select Standard or Adaptive.
Standard
When Standard
is selected, no warning vibra-
tion occurs if:
R
you switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
R
a driving safety system intervenes, such as
ABS, BAS or ESP
®
.
Adaptive
When Adaptive
is selected, no warning vibra-
tion occurs if:
R
you switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
R
a driving safety system intervenes, e.g. ABS,
BAS or ESP
®
.
R
you accelerate hard, e.g. kickdown.
R
you brake hard.
R
you steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
R
you cut the corner on a sharp bend.
In order that you are warned only when neces-
sary and in good time if you cross the lane mark-
ing, the system recognizes certain conditions
and warns you accordingly.
The warning vibration occurs earlier if:
R
you approach the outer lane marking on a
bend.
R
the road has very wide lanes, e.g. a highway.
R
the system recognizes solid lane markings.
The warning vibration occurs later if:
R
the road has narrow lanes
R
you cut the corner on a bend.
Driving Assistance PLUS package
General notes
The Driving Assistance PLUS package consists
of DISTRONIC PLUS (
Y page 186), Active Blind
Spot Assist (
Y page 219)and Active Lane Keep-
ing Assist (
Y page 222).
Active Blind Spot Assist
General notes
Active Blind Spot Assist uses a radar sensor
system, pointed toward the rear of the vehicle,
to monitor the area to the sides of the vehicle
which the driver is unable to see. A warning dis-
play in the exterior mirrors draws your attention
to vehicles detected in the monitored area. If
Driving systems
219
Driving and parking
Z