sensor MERCEDES-BENZ S-Class 2013 W221 Owner's Guide

This device has been approved by the FCC
as a “Vehicular RadarS
ystem”.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 Blind Spot Assist to assist you when
driving, the radar sensor system must be
activated (Y page 389) and operational.
Monitoring range of the sensors
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. G
WARNING
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. There is no display and no
warning.
If the lanes are very wide, it may not be
possible to monitor the complete width of the
neighboring lane. For this reason, vehicles in
the next lane may not be detected, especially
if they are driving in a staggered formation. This may be the case if vehicles are driving at
that edge of their lane which is furthest away
from your vehicle.
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.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may
be indicated, especially if the vehicles are not
driving in the middle of their lane. This may
be the case if there are vehicles driving at the
inner edge of their lanes.
Due to the nature of the system:
R warnings may be issued in error when
driving close to crash barriers or similar
solid lane borders.
R warnings may be interrupted when driving
alongside long vehicles, for example
trucks, for a prolonged time.
The two radar sensors for Blind Spot Assist
are integrated into the sides of the rear
bumper. Make sure that the bumper is free
from dirt, ice or slush around the sensors. The
sensors must not be covered, for example by
cycle racks or overhanging loads. Following a
severe impact or in the event of damage to
the bumpers, have the function of the sensors
checked at a qualified specialist workshop.
Blind Spot Assist may otherwise not work
properly.
Indicator and warning display 0002
Yellow indicator lamp/red warning lamp 364
Driving systemsDriving and parking

When Blind Spot Assist is activated, indicator
lamp 0002in the exterior mirrors lights up
yellow at speeds of up to 20 mph(30 km/h).
At speeds above 20 mph (30 km/h), the
indicato rlamp goes out and Blind Spo tAssist
is operational.
If a vehicle is detected within the monitoring
range of Blind Spot Assist at speeds above
20 mph (30km/h), warning lamp 0002on the
corresponding side lights up 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 7mph (12km/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. G
WARNING
Blind Spot Assist is not active at speeds below
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
corresponding turn signal, a double warning
tone sounds. Red warning lamp 0002flashes. If
the turn signal remains on, detected vehicles
are indicated by the flashing of red warning
lamp 0002.There are no further warning tones.
Switching on Blind Spot Assist
X Make sure that the radar sensor system
(Y page 389) and Blind Spot Assist (Y
page 387) are activated in the on-board
computer.
X Turn the SmartKey to position 2in the
ignition lock.
Warning lamps 0002light 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.
0002
Lane Keeping Assist camera
If you have chosen the Display unit Speed-/odometer (Y
page 388) function in
the on-board computer and select km as the
unit of measurement, Lane Keeping Assist is
active from speeds of 60 km/h. If the miles display unit is selected, the assistance range
begins at 40 mph.
G
WARNING
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. Driving systems
365Driving and parking
Z

Active Blind Spot Assist (Y
page 367) and
Active Lane Keeping Assist (Y page 369).
Active Blind Spo tAssist Important safety notes
Active Blind Spot Assist uses a radar sensor
system to monitor the side areas of your
vehicle which are in back of the driver. A
warning display in the exterior mirrors draws
your attention to vehicles detected in the
monitored area. If you then switch on the
corresponding turn signal to change lane, you
will also receive an optical and audible
collision warning. If a risk of lateral collision
is detected, corrective braking may help you
avoid a collision. To support the course-
correcting brake application, Active Blind
Spot Assist also uses the forward-facing radar
sensor system. Active Blind Spot Assist
supports you from a speed of approximately
20 mph (30 km/h). G
WARNING
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 may 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 389) and operational.
Monitoring area
Active Blind Spot Assist monitors the area up
to 10 ft (3 m) behind your vehicle and directly
nextt o your vehicle, as shown in the diagram.
For this purpose, Active Blind Spot Assist
uses radar sensors in the rear bumper. G
WARNING
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 Driving systems
367Driving and parking
Z

audible warnings are emitted and the system
does no
tbrake the vehicle to correct your
course.
If the lanes are very wide, it may not be
possible to monitor the complete width of the
neighboring lane. For this reason, vehicles in
the next lane may not be detected, especially
if they are driving in a staggered formation.
This may be the case if vehicles are driving at
that edge of their lane which is furthest away
from yourv ehicle.
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.
If the lanes are narrow, vehicles driving in the
lane beyond the lane nextt o your vehicle may
be indicated, especially if the vehicles are not
driving in the middle of their lane. This may
be the case if there are vehicles driving at the
inner edge of their lanes.
Due to the nature of the system:
R warnings may be issued in error when
driving close to crash barriers or similar
solid lane borders.
R warnings may be interrupted when driving
alongside long vehicles, for example
trucks, for a prolonged time.
Two Active Blind Spot Assist radar sensors
are integrated into the front and rear bumpers
respectively. An additional radar sensor is
located behind the cover in the radiator grill.
Make sure that the sensors and areas around
them are free of dirt, ice or slush. The rear
sensors must not be covered, for example by
cycle racks or overhanging cargo. Following
a severe impact or in the event of damage to
the bumpers, have the function of the sensors
checked at a qualified specialist workshop.
Blind Spot Assist may otherwise not work
properly. Indicator and warning display
0002
Yellow indicator lamp/red warning lamp
When Active Blind Spot Assist is activated,
indicator lamp 0002in the exterior mirrors lights
up yellow at speeds of up to
20 mph(30 km/h). At speeds above 20 mph
(30km/h), the indicator lamp goes out and
Active Blind Spot Assist is operational.
If a vehicle is detected within the monitoring
range of Blind Spot Assist at speeds above
20 mph (30km/h), warning lamp 0002on the
corresponding side lights up 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 7mph (12km/h).
The yellow indicator lamp goes out if reverse
gear is engaged. In this event, Active Blind
Spot Assist is no longer active.
The brightness of the indicator/warning
lamps is adjusted automatically according to
the ambient light. G
WARNING
Active Blind Spot Assist is not active at speeds
below 20 mph (30km/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. 368
Driving systemsDriving and parking

Visual and audible collision warnings
If a vehicle is detected in the side monitoring
range and you switch on the respective turn
signals, you will receive a collision warning.
You will hea radouble warning tone and red
warning lamp 0002flashes. If the turn signal
remains on, vehicles detected are indicated
by the flashing of red warning lamp 0002.There
are no further warning tones.
Course-correcting brake application
If Active Blind Spot Assist detects a risk of a
lateral collision in the monitoring range, a
course-correcting brake application is carried
out. This is meant to assist you in avoiding a
collision.
The course-correcting brake application is
available in the speed range between 20 mph
(30 km/h) and120 mph (200km/h).
If a course-correcting brake application
occurs, red warning lamp 0002flashes in the
exterior mirror and the following is shown in
the multifunction display, for example: G
WARNING
Active Blind Spot Assist is only an aid
designed to assist driving. It is not a substitute
for attentive driving. In some cases, the
course-correcting brake application is not
sufficient to avoid a collision. In such a case,
you must steer, brake or accelerate.
In very rare cases, the system may
erroneously detect a danger of collision in the
area of crash barriers or similar lane borders
and apply the brakes. Active Blind Spot Assist
does not detect all traffic situations and road
users. Always make sure that there is
sufficient distance on the side for other traffic
or obstacles. An inappropriate brake
application may be interrupted at any time if you steer slightly in the opposite direction or
accelerate.
You are responsible for 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.
There will be either no or only a weak course-
correcting brake application if:
R there are vehicles or obstacles, e.g. crash
barriers, located on both sides of your
vehicle.
R a vehicle approaches you too closely at the
side.
R you have adopted a sporty driving style with
high cornering speeds.
R you clearly brake or accelerate.
R a driving safety system intervenes, e.g.
ESP ®
or PRE-SAFE ®
Brake.
R ESP ®
is switched off.
R a loss of tire pressure or a defective tire is
detected.
Switching on Active Blind Spot Assist
X Make sure that the radar sensor system
(Y page 389) and Active Blind Spot Assist
(Y page 387) are activated in the on-board
computer.
X Turn the SmartKey to position 2in the
ignition lock.
Warning lamps 0002light up red in the
exterior mirrors for approximately
1.5 seconds and then turn yellow.
Active Lane Keeping Assist Important safety notes
Active Lane Keeping Assist monitors the area
in front of your vehicle by means of a camera
behind the top of the windshield. Active Lane
Keeping Assist detects lane markings on the Driving systems
369Driving and parking Z

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

X
Press the 0009or000C button on the
steering wheel to select the Settingsmenu.
X Press the 000Aor000B button to select
Acoustic Lock Feedb. X
Press the 0011button to confirm.
X To activate/deactivate: press0011
again.
Activating/deactivating the radar
sensor system The following systems are switched off when
the radar sensor system is deactivated:
R
DISTRONIC PLUS (Y page 336)
R BAS PLUS (Y page 74)
R PRE-SAFE ®
Brake (Y page 77)
R Blind Spot Assist (Y page 363)
R Active Blind Spot Assist (Y page 367)
X Press the 0009or000C button on the
steering wheel to select the Settingsmenu.
X Press 000Aor000B to select Radar Sensors .
X Press 0011to confirm.
X To activate/deactivate: press the0011
button again. Menus and submenus
389On-board computer and displays Z

Display messages Possible causes/consequences and
0004 Solutions
PRE-SAFE
Functions
currently limited
See Operator's
Manual PRE-SAFE
®
Brake is temporarily inoperative. Possible causes are:
R the DISTRONIC PLUS cover in the radiator trim is dirty
R function is impaired due to heavy rain or snow.
R the sensors in the bumpers are dirty.
R the rada rsensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
R the system is outside the operating temperature range.
R The on-board voltage is too low.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 327).
X Clean the DISTRONIC PLUS cover in the radiator trim
(Y page 474).
X Clean the bumpers (Y page 474).
X Restart the engine.
If the system detects that the sensors are fully operational, the
display message disappears.
PRE-SAFE ®
Brake is operational again. PRE-SAFE
Function limited
See Operator's
Manual PRE-SAFE
®
Brak eisd efective. BAS PLUS or the distanc ewarning
signal may also have failed.
X Visi taqualified specialist workshop. 001A
Restraint system
malfunction
Consult workshop There is a malfunction in the SRS (Supplemental Restraint
System). The
001Awarning lamp also lights up in the instrument
cluster.
G WARNING
The air bags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
X Visit a qualified specialist workshop. 400
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
0004 Solutions
0002
Malfunction See
Oper. Manual The exterio
rlighting is defective.
X Visit a qualified specialist workshop. 0002
AUTO
Lamp Function
Inoperative The light sensor is defective.
X
Visit a qualified specialist workshop.
USA only:
X Switch off the daytime running lamps in the on-board computer
(Y page 387).
X Switch the lights on and off using the light switch. 0002
Please Switch Off
Lights The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X
Turn the light switch to 000Eor000D.
or
X If the rear fog lamp is switched on: press the light switch in to
the stop. Adaptive High-beam
Assist Inoperative Adaptive Highbeam Assist is faulty.
X
Visit a qualified specialist workshop. Engine
Displa
ymessages Possible causes/consequences and
0004 Solutions
000D
Check Coolant
Level See Oper.
Manual The coolant level is too low.
!
Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
X Add coolant, observing the warning notes before doing so
(Y page 467).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop. 408
Displa
ymessagesOn-board computer and displays

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