Page 373 of 542

R
a driving safety system intervenes, e.g.
ABS, BAS or ESP ®
.
R you switch on the tur nsignals .Inthis event,
the warnings are suppressed for a certain
period of time.
Lane-correcting brake application
If you leave your lane under certain
circumstances the vehicle will brake briefly
on one side. This is meant to assist you in
bringing the vehicle back to the original lane.
This function is available in the range between
40 mph and 120 mph (60 km/h and
200 km/h).
A lane-correcting brake application can only
be made after driving over a solid,
recognizable lane marking. Before this, a
warning must be given by means of
intermittent vibration in the steering wheel.
In addition, a lane with lane markings on both
sides must be recognized. The brake
application also slightly reduces vehicle
speed.
If a lane-correcting brake application occurs,
the following, for example, appears in the
multifunction display: i
A further lane-correcting brake
application can only occur after your
vehicle has returned to the original lane. G
WARNING
Active Lane Keeping Assist does not keep
your vehicle in its lane. It is only an aid
designed to assist driving. It is not a substitute
for attentive driving. In some cases, the lane-
correcting brake application is not sufficient
to bring your vehicle back to the original lane.
In such cases, you must steer the vehicle yourself to ensure that it does not leave the
lane.
Active Lane Keeping Assist does not detect
road and traffic conditions. Always make sure
that there is sufficient distance to the side for
other traffic or obstacles. In rare cases,
unclear markings or particular structures on
the roadway can be recognized as solid lane
markings. An inappropriate brake application,
e.g. after intentionally driving over a solid lane
marking, may be interrupted at any time by
steering slightly in the opposite direction.
Active Lane Keeping Assist cannot take
weather conditions into account.
You are responsible for the driving at
appropriate speeds, braking in good time, and
steering correctly. Always adapt your driving
style to suit the prevailing road and weather
conditions. Always pay attention to traffic
conditions and your surroundings. Otherwise,
you may fail to recognize dangers in time,
cause an accident and injure yourself and
others.
No lane-correcting brake application occurs
if:
R you clearly and actively steer, brake or
accelerate.
R you cut the corner on a sharp bend.
R you switch on the turn signals.
R a driving safety system intervenes, e.g.
ESP ®
, PRE-SAFE ®
Brake or Active Blind
Spot Assist.
R you have adopted a sporty driving style with
high cornering speeds or high rates of
acceleration.
R ESP ®
is switched off.
R the transmission is not in position D.
R a loss of tire pressure or a defective tire has
been detected and displayed. Driving systems
371Driving and parking Z
Page 374 of 542
Active Lane Keeping Assist does not detect
traffic situations or road users. An
inappropriate brake applicatio
nmay be
interrupted at any time if you:
R steer slightly in the opposit edirection.
R use a tur nsignal.
R clearly brake or accelerate.
Al ane-correcting brake applicatio nis
interrupted automatically if:
R a driving safety system intervenes, e.g.
ESP ®
, PRE-SAFE ®
Brake or Active Blind
Spot Assist.
R lane markings can no longer be recognized.
Switching on Active Lane Keeping Assist X
Switch on Active Lane Keeping Assist using
the on-board computer (Y page 387).
Symbol 0002appears in the instrument
cluster.
If your speed exceeds 40 mph (60 km/h)
and lane markings are detected,
symbol 0002is highlighted in green .Active
Lane Keeping Assist is ready for use. 372
Driving systemsDriving and parking
Page 389 of 542

Activating/deactivating Blind Spot
Assist You can use the
Blind Spot Assist function to activate or deactivate Blind Spot
Assis t(Ypage 363) or Active Blind Spot
Assist (Y page 367).
X Press the 0009or000C button on the
steering wheel to select the DriveAssistmenu.
X Press 000Aor000B to select Blind Spot
Assist .
X Press the 0011button.
The curren tselection is displayed.
X To activate/deactivate: press the0011
button again.
Activating/deactivating Lane Keeping
Assist You can use the
Lane Keeping Assist function to activate/deactivate Lane Keeping
Assist (Y
page 365) or Active Lane Keeping
Assist (Y page 369).
X Press the 0009or000C button on the
steering wheel to select the DriveAssistmenu.
X Press 000Aor000B to select Lane Keeping Assist .
X Press the 0011button.
The curren tselection is displayed.
X To activate/deactivate: press the0011
button again.
When Lane Keeping Assist or Active Lane
Keeping Assist is activated, the 0001symbol
appears in the multifunction display when the
ignition is on. Service menu
In the Service menu, you have the following
options:
R calling up display messages ( Ypage 390)
R checking the tire pressure electronically
(Y page 505) R
calling up a service due date
(Y page 469)
R checking the oil level (Y page 463) Settings menu
Introduction The
Settings menu can be used for:
R Switching the daytime running lamps on/
off
R switching Adaptive Highbeam Assist on/
off
R showing or hiding the additional
speedometer
R selecting the units for speed and distance
R switching the belt adjustment on/off
R activating/deactivating the radar sensor
system
Switching the daytime running lamps
on/off This function is not available in Canada.
If you have activated the
Daytime running
lights function and the light switch is in the
000E or000D position, the daytime running
lamps are automatically switched on when
the engine is running.
Depending on the ambient light, the following
will additionally light up:
R parking lamps
R tail lamps
R license plate lamp
R side marker lamps
If you turn the light switch to a different
position, the corresponding lights are
switched on. If you switch off the daytime
running lamps at night, make sure that the
light switch is set to 000Aor000D.
The factory setting is On .Menus and submenus
387On-board computer and displays Z
Page 417 of 542

Display messages Possible causes/consequences and
0004 Solutions
ABC
Malfunction The ABC function is restricted. The vehicle's handling
characteristics may be affected.
X Do not drive faster than 50 mph (80km/h).
X Visit a qualified specialist workshop. 0002
Off The HOLD function is deactivated. the vehicle is skidding.
Aw
arning tone also sounds.
X Reactivate the HOLD function later (Y page 346). The HOLD function is deactivated. When the brak
epedal is firmly
depressed, an activation condition is not fulfilled.
Aw arning tone also sounds.
X Check the activation conditions for the HOLD function
(Y page 346). Radar Sensors
Deactivated See
Oper. Manual The radar sensor system is deactivated.
X
Switch on the radar sensor system (Y page 389).Lane Keeping
Assist Currently
Unavailable See
Operator's Manual
or
Active Lane Keeping Assist
Currently
Unavailable See
Operator's Manual Lane Keeping Assist or Active Lane Keeping Assist is deactivated
and temporarily inoperative. Possible causes are:
R
the windshield in the camera's field of vision is dirty.
R visibility is impaired due to heavy rain, snow or fog.
R there are no lane markings for a longer period.
R the lane markings are worn, dark or covered, e.g .by dir tors now.
If the display message does not disappear:
X Pull ove rand stop the vehicle safely as soo nas possible, paying
attention to road and traffic conditions.
X Apply the electric parking brake.
X Cleant he windshield.
If the system detects that the camera is fully operational, the
display message disappears.
Lane Keeping Assist or Active Lane Keeping Assist is operational
again. Lane Keeping
Assist
Inoperative or
Active Lane Keeping Assist
Inoperative Lane Keeping Assist or Active Lane Keeping Assist is defective.
X
Visit a qualified specialist workshop. Display messages
415On-board computer and displays Z
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