Lane keeping assist MERCEDES-BENZ S-Class 2011 W221 Owner's Manual

1, 2, 3 ...
12 V socket ........................................ 431
4ETS see ETS/4ETS
4MATIC (permanent four-wheel
drive) .................................................. 339
A
ABC see Active Body Control
ABC (Active Body Control)
Display message ............................ 403
ABS (Anti-lock Braking System)
Display message ............................ 388
Function/notes ................................ 67
Warning lamp ................................. 415
Active Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 376
Display message ............................ 404
Function/information ....................356
Active Body Control (ABC) ................ 338
Active Driving Assistance package . 355
Active Lane Keeping Assist Activating/deactivating (on-
board computer) ............................ 376
Display message ............................ 404
Function/information ....................359
Active light function (display
message) ............................................ 397
Active multicontour seat .......... 106, 268
Active partition (USB devices only) Selecting ........................................ 234
Active service system
see Service interval display
ADAPTIVE BRAKE ................................. 71
Adaptive brake lamps ......................... 69
Adaptive Damping System (ADS) ..... 337
Adaptive Highbeam Assist Display message ............................ 397
Switching on/off ........................... 275
Switching on/off (on-board
computer) ...................................... 377
Additional speedometer ................... 377
Address book
Calling up ....................................... 201
Connecting a call ........................... 204
Creating an entry ........................... 203
Deleting an entry ........................... 204
Importing contacts ........................200
Introduction ................................... 200
Starting route guidance .................204
Voice tag ....................................... 205
Address book entry
Adopting as a home address .........175
Address entry menu .......................... 151
Air bags Display message ............................ 386
Front air bag (driver, front
passenger) ....................................... 46
Important safety notes ....................44
Safety guidelines ............................. 43
Side impact air bag ..........................46
Window curtain air bag ....................47
Air-conditioning system
see Climate control
Air dehumidification
Activating/deactivating with
cooling ........................................... 289
Air distribution
Setting ........................................... 291
Setting (COMAND) .........................262
Airflow
Setting ........................................... 292
AIRMATIC ........................................... 336
AIRMATIC (display message) ............ 402
Air nozzles see Air vents .................................. 295
Air pressure
see Tire pressure
Air-recirculation mode
Activating/deactivating .................293
Air vents ............................................. 295
Glove box ....................................... 295
Important safety information .........294
Rear ............................................... 295
Setting the center air vents ...........295
Setting the side air vents ...............295
Alarm system
see ATA 4Index

Displays in the multifunction
display ........................................... 332
Driving tips .................................... 333
Setting the specified minimum
distance ......................................... 331
Warning lamp ................................. 419
Door
Automatic locking ............................ 83
Display message ............................ 410
Emergency locking ........................... 84
Emergency unlocking .......................84
Opening (from inside) ......................83
Power closing feature ......................84
Door control panel
Overview .......................................... 37
Doors
Important safety notes ....................82
Drinking and driving ......................... 319
Drinks holder see Cup holder
Drive program
Automatic ...................................... 311
Manual ........................................... 311
Driving abroad ................................... 323
Driving Assistance package ............. 352
Driving on flooded roads .................. 322
Driving safety system BAS PLUS (Brake Assist System
PLUS) ............................................... 68
Electronic Brake-force
Distribution ...................................... 71
ESP ®
(Electronic Stability
Program) .......................................... 69
ETS/4ETS (Electronic Traction
System) ........................................... 70
Important safety information ...........66
Driving safety systems
ABS (Anti-lock Braking System) .......67
ADAPTIVE BRAKE ............................. 71
Adaptive brake lamps ......................69
BAS (Brake Assist System) ..............67
Overview .......................................... 66
PRE-SAFE ®
Brake ............................. 71
Driving system
Driving Assistance package ...........352Driving systems
Active Blind Spot Assist .................356
Active Body Control .......................338
Active Driving Assistance
package ......................................... 355
Active Lane Keeping Assist ............359
AIRMATIC ...................................... 336
ATTENTION ASSIST ........................347
Blind Spot Assist ............................ 352
Cruise control ................................ 323
DISTRONIC PLUS ........................... 325
HOLD function ............................... 335
Lane Keeping Assist ......................354
Night View Assist Plus ...................348
Parking Guidance ........................... 342
PARKTRONIC ................................. 339
Rear view camera .......................... 346
Driving tips ........................................ 309
Braking .......................................... 322
DISTRONIC PLUS ........................... 333
Downhill gradients .........................320
Driving on flooded roads ................322
Wet road surface ........................... 321
Winter ............................................ 323
DTMF tones
Sending ......................................... 200
DVD
Copy protection ............................. 225
Data medium ................................. 225
Handling ........................................ 186
Inserting ........................................ 217
Selecting a track ............................ 221
DVD changer ...................................... 217
DVD menu .................................. 240, 253
DVD playback conditions ................. 237
DVD-Video Picture settings .............................. 236
DVD-Video Operation
Automatic picture shutoff ..............235
E
EASY-ENTRY feature ......................... 108
Activating (COMAND) ....................258
EASY-EXIT feature ............................. 108
Activating (COMAND) ....................258
Crash-responsive ........................... 109
Index9

Head restraintsAdjusting (electrically) ...................104
Adjusting (rear) .............................. 105
see NECK-PRO head restraints/
NECK-PRO luxury head restraints
Heating
see Climate control
High beam flasher ............................. 276
Hill start assist .................................. 302
HOLD function ................................... 335
HOLD function (display message) ... 403
Home address ................................... 175
Entering and saving .......................154
Selecting from the destination
memory ......................................... 156
Hood
Closing ........................................... 447
Display message ............................ 410
Opening ......................................... 446
Hydroplaning ..................................... 322
I
Immobilizer .......................................... 73
Incident (traffic report) ..................... 172
Indicator and warning lamps DISTRONIC PLUS ........................... 419
Insect protection on the radiator .... 447
Instrument cluster Overview .......................................... 32
Submenu (on-board computer) ......377
Warning and indicator lamps ...........33
Interior lighting
Ambient light (COMAND) ...............260
Automatic control ..........................278
Interior lighting .............................. 259
Manual control ............................... 278
Reading lamp ................................. 277
Intermediate stop
Deleting ......................................... 160
Intermediate top
Entering ......................................... 158
iPod ®
Alphabetic track selection .............233
Connecting to the Media
Interface ........................................ 229
Device version ............................... 229
Selecting a category/playlist .........232
iTunes®
............................................... 233
J
Jack Storage location ............................ 462
Using ............................................. 464
Jump-starting ..................................... 471
K
KEYLESS-GO Button ............................................ 299
Convenience closing feature ............91
Display message ............................ 411
Locking ............................................ 77
Starting the engine ........................301
Unlocking ......................................... 77
Key positions
KEYLESS-GO .................................. 299
SmartKey ....................................... 299
Kickdown ................................... 309, 312
L
Lane-change assistant see Active Blind Spot Assist
see Blind Spot Assist
Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 376
Display message ............................ 404
Function/information ....................354
Lane recommendations .................... 165
Explanation .................................... 167
Presentation .................................. 167
LATCH-type (ISOFIX) child seat
anchors ................................................ 63
License plate lamp (display
message) ............................................ 395
Lights Automatic headlamp mode ............273
Cornering light function .................277
Daytime running lamps ..................273
Driving abroad ............................... 272
Fog lamps ...................................... 274
Hazard warning lamps ...................276
High-beam headlamps ...................275
Light switch ................................... 272
12Index

Instrument cluster
Overview
FunctionPage:Coolant temperature gauge365;Fuel gauge=Front area warning display
for PARKTRONIC342
?Multifunction display366SpeedometerATransmission position308BTachometer365CDrive program310DParking Guidance display342FunctionPageEDisplay unit of the
speedometer
FOutside temperature
display365
GAdditional speedometer377HHOLD function335Ä PRE-SAFE® Brake71IAdaptive Highbeam Assist275Lane Keeping Assist or
Active Lane Keeping Assist
354,
359
ATTENTION ASSIST33473Not available on HYBRID vehicles.32Instrument clusterAt a glance

Problems with Night View Assist PlusProblemPossible causes/consequences and M SolutionsThe picture quality of
Night View Assist Plus
has deteriorated.The windshield wipers are smearing the windshield.XReplace the wiper blades ( Y page 281).The windshield is smeared after the vehicle has been cleaned in a
car wash.XClean the windshield ( Y page 455).There is windshield chip damage in the camera's field of vision.XReplace the windshield.The windshield is fogged up on the inside.XDefrost the windshield ( Y page 293).The windshield is iced up.XDe-ice the windshield ( Y page 292).There is dirt on the inside of the windshield.XClean the inside of the windshield ( Y page 455).Driving Assistance package
General information
i The Driving Assistance package is only
available on vehicles with HYBRID.
The Driving Assistance package consists of
DISTRONIC PLUS ( Y page 325), Blind Spot
Assist ( Y page 352) and Lane Keeping Assist
( Y page 354).
Blind Spot Assist
Important safety guidelines
Blind Spot Assist uses a radar sensor system
to monitor the areas on both sides of your
vehicle. Blind Spot Assist provides assistance
at speeds higher than 20 mph (30 km/h). A
warning display in the exterior mirrors draws
your attention to vehicles in the monitored
area. If you then indicate a turn towards that
side before changing lanes, you will also
receive visual and audible collision warnings.
For this purpose, Blind Spot Assist uses
sensors in the rear bumper.GWarning
Blind Spot Assist is only an aid designed to
assist driving. It may fail to detect some
vehicles and is no substitute for attentive
driving.
Blind Spot Assist cannot detect road and
traffic conditions. It may fail to detect narrow
vehicles, such as motorcycles or bicycles, or
may only detect them too late.
Monitoring may be affected by dirty sensors,
strong spray or poor visibility caused by snow,
rain or mist, for example. In this case, vehicles
are detected late or not at all.
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.
i USA only:
352Driving systemsDriving and parking

When Blind Spot Assist is activated, indicator
lamp : in the exterior mirrors lights up in
yellow at speeds of up to 20 mph (30 km/h).
At speeds above 20 mph (30 km/h), the
indicator lamp goes out and Blind Spot Assist
is operational.
If a vehicle is detected within the monitoring
range of Blind Spot Assist at speeds above
20 mph (30 km/h), warning lamp : on the
corresponding side lights up in red. This
warning is always emitted when a vehicle
enters the blind spot monitoring range from
behind or from the side. When you overtake
a vehicle, the warning only occurs if the
difference in speed is less than 7 mph
(12 km/h).
The yellow indicator lamp goes out if reverse
gear is engaged. In this event, Blind Spot
Assist is no longer active.
The brightness of the indicator/warning
lamps is adjusted automatically according to
the ambient light.
GWarning
Blind Spot Assist is not active at speeds under
approximately 20 mph (30 km/h). The
indicator lamps in the exterior mirrors are
yellow. Vehicles in the monitoring range are
then not indicated.
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.
Collision warning
If a vehicle is detected in the monitoring range
of Blind Spot Assist and you switch on the turn
signal, a double warning tone sounds. Red
warning lamp : flashes. If the turn signal
remains on, detected vehicles are indicated
by the flashing of red warning lamp :. There
are no further warning tones.
Switching on Blind Spot Assist
XMake sure that the radar sensor system
(Y page 378) and Blind Spot Assist
(Y page 376) are activated in the on-board
computer.
XTurn the SmartKey to position 2 in the
ignition lock.
Warning lamps : light up red in the
exterior mirrors for approximately 1.5
seconds and then turn yellow.
Lane Keeping Assist
Important safety notes
Lane Keeping Assist monitors the area in
front of your vehicle by means of a camera at
the top of the windshield. Lane Keeping Assist
detects lane markings on the road and warns
you before you leave your lane
unintentionally.
:Lane Keeping Assist camera
If you select km/h on the on-board computer
in the Display Unit Speed-/Odometer:
function (Y page 377), Lane Keeping Assist
is activated from speeds of 60 km/h. If the
mph display unit is selected, the assistance
range begins at 40 mph.
GWarning
Lane Keeping Assist does not keep your
vehicle in its lane. It is only an aid and may
detect the lane markings on the road
incorrectly or not at all.
354Driving systemsDriving and parking

The system may be impaired or may not
function if:
Rthere is poor visibility, e.g. due to
insufficient illumination of the road, or due
to snow, rain, fog or spray.
Rthere is glare, e.g. from oncoming traffic,
the sun, or reflection from other vehicles.
Rthe windshield is dirty, fogged up or
covered, for instance by a sticker, in the
vicinity of the camera.
Rseveral or no lane markings for a single lane
are present.
Rthe lane markings are worn away, dark or
covered up, e.g. by dirt or snow.
Rthe distance to the vehicle in front is too
small and the lane markings thus cannot be
detected.
Rthe lane markings on the road are unclear,
e.g. near roadworks.
Rthe lane markings change quickly, e.g.
lanes branch off, cross one another or
merge.
Rthe road is narrow and winding.
Lane Keeping Assist cannot detect road and
traffic conditions. It is not a substitute for
attentive driving. You are responsible for the
vehicle's speed, 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.
A warning can be given when a front wheel
passes over a lane marking. It will warn you
by means of intermittent vibration in the
steering wheel for up to 1.5 seconds.
In order that you are warned only when
necessary and in good time if you cross the
lane marking, the system recognizes certain
conditions and warns you accordingly.
The warning vibration occurs earlier if:
Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a
freeway.
Rthe system recognizes solid lane markings.
The warning vibration occurs later if:
Rthe road has narrow lanes.
Ryou cut the corner on a bend.
No warning vibration occurs if:
Ryou clearly and actively steer, brake, or
accelerate.
Ryou cut the corner on a sharp bend.
Ra driving safety system intervenes, such as
ABS, BAS or ESP®.
Ryou switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
Activating Lane Keeping Assist
XActivate Lane Keeping Assist using the on-
board computer (Y page 376).
Symbol : appears in the multifunction
display.
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
symbol : is displayed in green. Lane
Keeping Assist is ready for use.
Active Driving Assistance package
General information
iThe Active Driving Assistance package is
only available on vehicles without HYBRID.
The Active Driving Assistance package
consists of DISTRONIC PLUS (Y page 325),
Driving systems355Driving and parkingZ

Active Blind Spot Assist (Y page 356) and
Active Lane Keeping Assist ( Y page 359).
Active Blind Spot Assist
Important safety notes
Active Blind Spot Assist uses a radar sensor
system to monitor the side areas of your
vehicle. In addition, it uses the radar sensor
system to monitor the front area as well.
Active Blind Spot Assist is active at speeds
above approximately 20 mph (30 km/h). A
warning lamp in the exterior mirrors calls your
attention to a vehicle or certain obstacles in
the area monitored. If you switch on the
corresponding turn signal before changing
lane, you will also receive visual and audible
collision warnings. If a risk of lateral collision
is detected, corrective braking may help you
avoid a collision.
GWarning
Active Blind Spot Assist is only an aid, and
may detect vehicles/obstacles incorrectly or
not at all.
The system may be impaired or may not
function if:
R there is poor visibility, e.g. due to snow,
rain, fog or spray.
R the rear and/or front sensors are dirty.
Active Blind Spot Assist may not detect
narrow vehicles, such as motorcycles or
bicycles, or only detect them too late. It
cannot detect vehicles that are overtaken at
a small distance and then enter the blind spot
area.
Active Blind Spot Assist cannot detect road
and traffic conditions. It is not a substitute for
attentive driving. You are responsible for the
vehicle's speed, 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.
i USA only:
This device has been approved by the FCC
as a “Vehicular Radar System”. The radar
sensor is intended for use in an automotive
radar system only. Removal, tampering, or
altering of the device will void any
warranties, and is not permitted by the
FCC. Do not tamper with, alter, or use in
any non-approved way.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
For Active Blind Spot Assist to assist you
when driving, the radar sensor system must
be activated ( Y page 378) and operational.
Monitoring range
Active Blind Spot Assist monitors the area up
to 10 ft (3 m) behind your vehicle and directly
next to your vehicle as shown in the diagram.
For this purpose, Active Blind Spot Assist
uses sensors in the rear bumper.GWarning
Active Blind Spot Assist monitors certain
areas in the immediate vicinity of your vehicle.
Vehicles that approach and drive past at high
speeds are not detected. No visual nor
audible warnings are emitted and the system
does not brake the vehicle to correct your
course.
356Driving systemsDriving and parking

Active Lane Keeping Assist
Important safety notes
Active Lane Keeping Assist monitors the area
in front of your vehicle by means of a camera
at the top of the windshield. Active Lane
Keeping Assist detects lane markings on the
road and warns you before you leave your
lane unintentionally. If you do not react to the
warning, a lane-correcting application of the
brakes can bring the vehicle back into the
original lane.
:Active Lane Keeping Assist camera
If you select km on the on-board computer in
the Display Unit Speed-/
Odometer (Y page 377) function, Active Lane
Keeping Assist is activated starting at a speed
of 60 km/h. If the mph display unit is selected,
the assistance range begins at 40 mph.
GWarning
Active Lane Keeping Assist does not keep
your vehicle in its lane. It is only an aid and
may detect the lane markings on the road
incorrectly or not at all.
The system may be impaired or may not
function if:
Rseveral or no lane markings for a single lane
are present.
Rthere is poor visibility, e.g. due to
insufficient illumination of the road, or due
to snow, rain, fog or spray.
Rthere is glare, e.g. from oncoming traffic,
the sun, or reflection from other vehicles.
Rthe windshield is dirty, fogged up or
covered, for instance by a sticker, in the
vicinity of the camera.
Rthe lane markings are worn away, dark or
covered up, e.g. by dirt or snow.
Rthe distance to the vehicle in front is too
small and the lane markings thus cannot be
detected.
Rthe lane markings on the road are unclear,
e.g. near roadworks.
Rthe lane markings change quickly, e.g.
lanes branch off, cross one another or
merge.
Rthe road is narrow and winding.
Active Lane Keeping Assist cannot detect
road and traffic conditions. It is not a
substitute for attentive driving. You are
responsible for the vehicle's speed, 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.
Warning vibration in the steering wheel
A warning can be given when a front wheel
passes over a lane marking. It will warn you
by means of intermittent vibration in the
steering wheel for up to 1.5 seconds.
In order that you are warned only when
necessary and in good time if you cross the
lane marking, the system recognizes certain
conditions and warns you accordingly.
The warning vibration occurs earlier if:
Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a
freeway.
Rthe system recognizes solid lane markings.
The warning vibration occurs later if:
Rthe road has narrow lanes.
Ryou cut the corner on a bend.
Driving systems359Driving and parkingZ

No warning vibration occurs if:
Ryou clearly and actively steer, brake, or
accelerate.
Ryou cut the corner on a sharp bend.
Ra driving safety system intervenes, such as
ABS, BAS or ESP®.
Ryou switch on the turn signals. In this 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 designed to help you bring
the vehicle back into 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. You will be
warned beforehand by means of an
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 driving
speed.
If a lane-correcting brake application occurs,
the following message appears in the
multifunction display:
iA further lane-correcting brake
application can only occur after your
vehicle has returned to the original lane.
GWarning
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
account of weather conditions.
You are responsible for the vehicle's speed,
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:
Ryou clearly and actively steer, brake, or
accelerate.
Ryou cut the corner on a sharp bend.
Ryou switch on the turn signals.
Ra driving safety system intervenes, such as
ESP®, PRE-SAFE® Brake or Active Blind
Spot Assist.
Ryou have adopted a sporty driving style with
high cornering speeds or high rates of
acceleration.
RESP® is deactivated.
Rthe transmission is not in position D.
Ra loss of tire pressure or a defective tire has
been detected and displayed.
360Driving systemsDriving and parking