sensor MERCEDES-BENZ CL-Class 2011 C216 Owner's Guide

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. Removing, tampering
with, or altering 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 342) 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.
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
the edge of their lane that 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, the system may be
unable to distinguish the neighboring lane
from the one beyond it. For this reason,
vehicles in the farther lane may be indicated,
especially if the vehicles are driving in a
staggered formation in different lanes. In
particular, this may be the case if the vehicles
are driving at the edge of their lane nearest
your vehicle. Due to the nature of the system,
warnings may be issued in error when driving
close to crash barriers or similar solid lane
borders.
Two Active Blind Spot Assist sensors are
integrated into the front and rear bumpers
respectively. An additional sensor is located
behind the cover in the radiator grill. Make
sure that the bumpers are free from dirt, ice,
or slush around the sensors. The rear radar
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 radar
sensors checked at a qualified specialist
workshop, e.g. an authorized Mercedes-Benz
Center. Active Blind Spot Assist may
otherwise fail to work correctly.
Driving systems321Driving and parkingZ

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 to 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 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.
Either a very slight course-correcting brake
application, or none at all, may occur if:
Rthere are other vehicles and/or obstacles,
such as crash barriers, close to the vehicle.
Ra vehicle approaches you too closely at the
side.
Ryou have adopted a sporty driving style with
high cornering speeds.
Ryou brake or accelerate decisively.
Ra driving safety system intervenes, e.g.
ESP® or PRE-SAFE® Brake.
RESP® is deactivated.
Ra loss of tire pressure or a defective tire has
been detected and displayed
Activating Active Blind Spot Assist
XMake sure that the radar sensor system
(Y page 342) and Active Blind Spot Assist
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.
Active Lane Keeping Assist
Important safety guidelines
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 341) 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.
Driving systems323Driving and parkingZ

Rcall up display messages ( Y page 343)
R check the tire pressure electronically
( Y page 445)
R call up the service due date ( Y page 410)
R check the oil level ( Y page 405)
Menu settings
Introduction
In the Settings menu, you have the following
options:
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 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 Day Running
Lights function and the light switch is set to
$ or c , the daytime running lamps are
switched on automatically when the engine is
running.
In the dark, the following also light up:
R the side lamps
R the tail lamps
R the license plate lamp
R the side marker lamp
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 L or c .
The factory setting is Enabled.
XPress the = or ; button on the
steering wheel to select the Settings
menu.XPress the 9 or : button to select
Day Running Lights .XPress the a button to confirm.XTo activate/deactivate: press a
again.
Switching Adaptive Highbeam Assist
on/off
XPress the = or ; button on the
steering wheel to select the Settings
menu.XPress the : or 9 button to select
Adapt. High-beam Asst. .XPress the a button to confirm.XTo activate/deactivate: press a
again.
Switching the additional speedometer
on or off
An additional digital speedometer can be
shown in the multifunction display.
Vehicles with a kilometer speedometer: the
digital speedometer has mph units.
Vehicles with a miles speedometer: the digital
speedometer has km/h units.
XPress the = or ; button on the
steering wheel to select the Settings
menu.XPress 9 or : to select Add.
Speedometer .XPress the a button to confirm.XPress the a button to save the setting.
Selecting the unit of measurement for
distance
The Display Unit Speed-/Odometer
function allows you to choose whether
certain displays appear in km/h or mph.
Menus and submenus341On-board computer and displaysZ

The selected unit of measurement for
distance applies to:
R the analog speedometer
R the digital speedometer in the Trip menu
R the odometer and the trip odometer
R the trip computer
R the navigation instruction in the Navi menu
R DISTRONIC PLUS
R ASSYST PLUS service interval display
The digital speedometer shows alternative
speed units ( Y page 341).XPress the = or ; button on the
steering wheel to select the Settings
menu.XPress 9 or : to select Units.XPress the a button to confirm.XPress the a button to save the setting.
The unit switches km/h and mph.
Activating/deactivating the acoustic
locking confirmation
If you activate the Acoustic Lock Feedb.
function, an audible signal sounds when the
vehicle is locked or unlocked. When
unlocking, the signal sounds once. When
locking, it sounds three times.
XPress the = or ; button on the
steering wheel to select the Settings
menu.XPress 9 or : to select Acoustic
Lock Feedb. .XPress the a button to confirm.XTo activate/deactivate: press a
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 293)
R BAS PLUS ( Y page 62)
R
PRE-SAFE ®
Brake ( Y page 65)
R Active Blind Spot Assist ( Y page 320)
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.
i Canada only:
This device complies with RSS-210 of
Industry Canada. Operation is subject to
the following two conditions:
1. This device may not cause interference,
and
2. This device must accept any interference
received, including interference that may
cause undesired operation of the device.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.XPress the = or ; button on the
steering wheel to select the Settings
menu.XPress 9 or : to select Radar
Sensors .XPress the a button to confirm.XTo activate/deactivate: press a
again.342Menus and submenusOn-board computer and displays

Display messagesPossible causes/consequences and M SolutionsPRE-SAFE
Inoperative See
Oper. ManualGRisk of injury
Important functions of PRE-SAFE ®
have failed. All other occupant
safety systems, e.g. air bags, remain available.
XVisit a qualified specialist workshop immediately.PRE-SAFE
Functions
Currently Limited
See Operator's
ManualGRisk of accident
PRE-SAFE ®
Brake is temporarily inoperative if:
R the DISTRONIC PLUS cover in the radiator grill is dirty.
R the sensors in the bumpers are dirty.
R its function is impaired due to heavy rain or snow.
R the radar sensor 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 insufficient.
PRE-SAFE ®
Brake is operational again and the display message
disappears when:
R the dirt (e.g. slush) drops away while the vehicle is in motion.
R the system detects that the sensors are fully available again.
R the system is within the operating temperature range.
If the display message continues to be displayed:
XClean the DISTRONIC PLUS cover in the radiator grill
( Y page 414).XClean the bumpers ( Y page 414).XRestart the engine.XWait until the battery is sufficiently charged.PRE-SAFE
Function Limited
See Oper. ManualGRisk of accident
PRE-SAFE ®
Brake is faulty. BAS PLUS or the distance warning
signal may also have failed.
XVisit a qualified specialist workshop.6
SRS Malfunction
Service RequiredGRisk of injury
There is a malfunction in the SRS (Supplemental Restraint
System). The 6 warning lamp also lights up in the instrument
cluster.
XVisit a qualified specialist workshop.346Display messagesOn-board computer and displays

Display messagesPossible causes/consequences and M Solutionsb
AUTO Lamp Function
InoperativeThe light sensor is faulty.XVisit a qualified specialist workshop.
USA only:
XSwitch off the daytime running lamps in the on-board computer
( Y page 341).XSwitch the lights on and off using the light switch.b
Please Switch Off
LightsThe lights are still switched on when you leave the vehicle. A
warning tone also sounds.XTurn the light switch to $ or c .
or
XIf the rear fog lamp is switched on: press the light switch in to
the stop.Adaptive High-beam
Assist
InoperativeAdaptive Highbeam Assist is faulty.XVisit a qualified specialist workshop.
Engine
Display messagesPossible causes/consequences and M Solutions+
Check Coolant
Level See Oper.
ManualThe coolant level is too low.XAdd coolant, observing the warning notes when doing so
( Y page 407).XIf coolant needs adding more often than usual, have the engine
coolant system checked at a qualified specialist workshop.GWarning
Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn
if it comes into contact with hot engine parts. You could be seriously burned.
! The coolant level is too low. Avoid making long journeys with too little coolant in the cooling
system. The engine will otherwise be damaged.
The display messages and the corresponding symbol that indicate that the coolant level is
too low must not be ignored.
Display messages359On-board computer and displaysZ

Display messagesPossible causes/consequences and M SolutionsABC
Malfunction Stop
VehicleXPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
After a few seconds, the vehicle level is adjusted and the display
message disappears.The vehicle is leaking oil.
The display message is shown continuously.XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.XConsult a qualified specialist workshop or breakdown service.The display message is shown continuously.
ABC is malfunctioning.XDo not drive faster than 50 mph (80 km/h).XMake only slight steering movements. The front fender or the
tires could be damaged if the steering movement is too large.XListen for scraping sounds.XVisit a qualified specialist workshop.ABC
Vehicle Rising
Please Wait BrieflyThe ABC vehicle level is too low when the vehicle is stationary.XDo not pull away.
The vehicle level is set when the display message disappears.ABC
MalfunctionThe ABC function is restricted. The vehicle's handling
characteristics may be affected.XDo not drive faster than 50 mph (80 km/h).XVisit a qualified specialist workshop.HOLD
OffThe HOLD function is deactivated. The vehicle is skidding or a
condition for activation is no longer met when the brake pedal is
firmly depressed. A warning tone also sounds.XReactivate the HOLD function later.Radar Sensors
Deactivated See
Oper. ManualThe radar sensor system is deactivated.XCheck whether or not the radar sensor system may be activated
( Y page 342).XSwitch on the radar sensor system ( Y page 342).Display messages365On-board computer and displaysZ

Display messagesPossible causes/consequences and M SolutionsActive Lane
Keeping Assist
Currently
Unavailable See
Oper. ManualActive Lane Keeping Assist is deactivated and temporarily
inoperative if:
R the windshield is dirty in the camera’s field of vision.
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, for example by dirt
or snow.
Active Lane Keeping Assist is operational again and the display
message disappears if:
R the dirt (e.g. slush) drops away while the vehicle is in motion.
R the system detects that the camera is fully operational again.
If the display message continues to be displayed:XClean the windshield.Active Lane
Keeping Assist
InoperativeActive Lane Keeping Assist is faulty.XVisit a qualified specialist workshop.Active Blind Spot
Assist
Currently
Unavailable See
Oper. ManualActive Blind Spot Assist is temporarily inoperative if:
R the sensors are dirty.
R its function is impaired due to heavy rain or snow.
R the radar sensor system is outside the operating temperature
range.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
The yellow 9 indicator lamps also light up in the exterior
mirrors.
Active Blind Spot Assist is operational again and the display
message disappears if:
R the dirt (e.g. slush) drops away while the vehicle is in motion.
R the system detects that the sensors are fully available again.
R the radar sensor system is back within the operating
temperature range.
If the display message continues to be displayed:XClean the sensors ( Y page 414).XRestart the engine.366Display messagesOn-board computer and displays

Display messagesPossible causes/consequences and M SolutionsActive Blind Spot
Assist Inoperative
InoperativeActive Blind Spot Assist is faulty.
The yellow 9 indicator lamps also light up in the exterior
mirrors.XVisit a qualified specialist workshop.Parking Guidance
InoperativeParking Guidance is faulty.XRestart the engine.
If the display message continues to be displayed:
XVisit a qualified specialist workshop.Parking Guidance
CanceledParking Guidance is deactivated because:
R the vehicle is skidding.
R the sensors are dirty.
R a malfunction has occurred.XReactivate Parking Guidance later.
If the parking space symbol is not displayed in the multifunction
display when you are driving at a speed of less than 19 mph
(30 km/h):
XClean the sensors ( Y page 414).XRestart the engine.
If the parking space symbol is still not displayed in the
multifunction display when you are driving at a speed of less than
19 mph (30 km/h):
XVisit a qualified specialist workshop.Parking Guidance is deactivated because you have left the lane.XPark again and, while doing so, observe the display messages
in the multifunction display.Parking Guidance
FinishedThe vehicle is parked. A warning tone also sounds.
The display message disappears automatically.DISTRONIC PLUS
OffDISTRONIC PLUS has been deactivated. If it was deactivated
automatically, a warning tone also sounds ( Y page 300).DISTRONIC PLUS
Available AgainDISTRONIC PLUS is operational again after having been
temporarily unavailable. You can now reactivate DISTRONIC PLUS
( Y page 293).Display messages367On-board computer and displaysZ

Display messagesPossible causes/consequences and M SolutionsDISTRONIC PLUS
Currently
Unavailable See
Oper. ManualDISTRONIC PLUS is deactivated and is temporarily inoperative if:
R the DISTRONIC PLUS cover in the radiator grill is dirty.
R the sensors in the bumpers are dirty.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
R its function is impaired due to heavy rain or snow.
R the system is outside the operating temperature range.
R the on-board voltage is too low.
A warning tone also sounds.
DISTRONIC PLUS is operational again and the display message
disappears if:
R the dirt (e.g. slush) drops away while the vehicle is in motion.
R the system detects that the sensors are fully available again.
R the system is within the operating temperature range.
If the display message continues to be displayed:XClean the DISTRONIC PLUS cover in the radiator grill
( Y page 414).XClean the bumpers ( Y page 414).XRestart the engine.DISTRONIC PLUS
InoperativeDISTRONIC PLUS is faulty. BAS PLUS and PRE-SAFE ®
Brake may
also have failed. A warning tone also sounds.XVisit a qualified specialist workshop.DISTRONIC PLUS
OverrideYou have depressed the accelerator pedal. DISTRONIC PLUS is no
longer controlling the speed of the vehicle.XTake your foot off the accelerator pedal.DISTRONIC PLUS
--- mphAn activation condition for DISTRONIC PLUS is not fulfilled.XCheck activation conditions for DISTRONIC PLUS
( Y page 293).368Display messagesOn-board computer and displays