2012 MERCEDES-BENZ CL-Class display

ATTENTION ASSIST
Important safety notes
ATTENTION ASSIST helps you during long,
monotonous journeys such as on freeways
and interstate highways. It is active in the
range between 50 mph (80 km/h) and
112 mph (180 km/h).
If ATTENTION ASSIST detects typical
indicators of fatigue or increasing lapses in
concentration on the part of the driver, it
suggests you take a break.
GWARNING
ATTENTION ASSIST is only an aid and may
detect your tiredness or lapses in
concentration too late or not at all. It is not a
substitute for a well-rested and attentive
driver.
Fatigue may cause you to recognize
hazardous situations too late, misjudge a
situation or react more slowly. For this
reason, make sure you feel rested before you
begin driving and during your journey. Make
sure that you take regular breaks in time,
particularly on long journeys. Otherwise, you
may fail to recognize dangers in time, cause
an accident and injure yourself and others.
ATTENTION ASSIST assesses your level of
fatigue or lapses in concentration by taking
the following criteria into account:
R your personal driving style, e.g. steering
characteristics
R driving conditions, e.g. time, driving time
The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or
not occur at all:
R if the road condition is poor, e.g. if the
surface is uneven or if there are potholes
R if there is a strong side wind
R if you have adopted a sporty driving style
with high cornering speeds or high rates of
acceleration
R if you predominantly drive at speeds under
50 mph (80 km/h) or over 112 mph
(180 km/h)
R if you are currently using COMAND or
making a telephone call with it
R if the time has been set incorrectly
R in active driving situations, such as when
you change lanes or change your speed
Warning and display messages in the
multifunction displayXActivate ATTENTION ASSIST using the on-
board computer ( Y page 342).
Symbol : appears in the multifunction
display.
If ATTENTION ASSIST is active, you will be
warned no sooner than 20 minutes after your
journey has begun. You will then hear an
intermittent warning tone twice, and the
Attention Assist: Time for a break?
message appears in the multifunction
display.
XIf necessary, take a break.XPress a to confirm the message.
On long journeys, take regular breaks in good
time to allow yourself to rest properly. If you
do not take a break and ATTENTION ASSIST
still detects typical indicators of fatigue or
increasing lapses in concentration, you will be
warned again after 15 minutes at the earliest.
ATTENTION ASSIST is reset when you
continue your journey and starts assessing
your tiredness again if:
R you switch off the engine.
R you take off your seat belt and open the
driver's door, e.g. for a change of drivers or
to take a break.
316Driving systemsDriving and parking

Night View Assist Plus with spotlight
function
Important safety notes
In addition to the illumination provided by the
normal headlamps, Night View Assist Plus
uses infrared light to illuminate the road. The
Night View Assist Plus camera picks up the
infrared light and shows a black-and-white
image in the multifunction display. The image
shown in the multifunction display
corresponds to a road lit up by high-beam
headlamps. This enables you to see the road's
course and any obstacles in good time. If
pedestrian recognition is activated,
pedestrians recognized by the system are
highlighted in the Night View Assist Plus
display.
The spotlight function also illuminates
individual detected pedestrians with a
spotlight that flashes four times in quick
succession. After this targeted illumination,
the headlamps return to the original driving
position again.
GWARNING
Night View Assist Plus is only an aid designed
to assist driving. It is not a substitute for
attentive driving. Do not rely solely on the
Night View Assist Plus display. Continue to
look through the windshield. You are
responsible for safety and must drive in
accordance with traffic conditions. You could
otherwise put yourself and others in danger.
The system may be impaired or unavailable if:
R there is poor visibility, e.g. due to snow,
rain, fog or heavy spray.
R the windshield is dirty, fogged up or
covered, for instance by a sticker, in the
vicinity of the camera.
R you are driving on bends, uphill gradients
or downhill gradients.
Light from the headlamps of oncoming
vehicles does not affect the Night View Assist
Plus display in the multifunction display. This
is also the case if you cannot switch on the
high-beam headlamps due to oncoming
traffic.GWARNING
The Night View Assist Plus cannot record
objects immediately in front of or next to the
vehicle. When maneuvering, continue to look
through the windshield. Make sure no
persons or animals are in the area in which
you are maneuvering. You could otherwise
injure them.
i Infrared light is not visible to the human
eye and therefore does not glare. Night
View Assist Plus can therefore remain
switched on even if there is oncoming
traffic.
:Night View Assist Plus camera
Pedestrian recognition
GWARNING
Pedestrian recognition may be impaired or
inoperative if:
R pedestrians are partially or entirely
obscured by objects, e.g. parked vehicles.
R the silhouette of the pedestrian in the Night
View Assist Plus display is incomplete or
interrupted, e.g. by powerful light
reflections.
R pedestrians do not contrast with the
surroundings.
R pedestrians are not standing upright, for
example, if they are sitting, crouching or
lying down.
Driving systems317Driving and parkingZ

iAnimals are not recognized by pedestrian
recognition.
Night View Assist Plus is able to recognize
pedestrians by typical characteristics, e.g. a
silhouette in the shape of a person.
Pedestrian recognition is then switched on
automatically if:
R Night View Assist Plus is activated.
R you are driving faster than 6 mph
(10 km/h).
R the surroundings are dark, e.g. when
driving outside built-up areas without
street lighting.
If pedestrian recognition is enabled, the
active pedestrian recognition symbol
( Y page 319) appears in the multifunction
display. If a pedestrian is now recognized,
they are framed and thereby highlighted. If
the pedestrian recognition system has
brought a pedestrian to your attention, look
through the windshield to evaluate the
situation. The actual distance to objects and
pedestrians cannot be gauged accurately by
looking at a screen.
It may be the case that objects are highlighted
as well as pedestrians.
Spotlight function
Pedestrian recognition with spotlight
function is activated automatically if:
R Night View Assist Plus with spotlight
function is activated.
R you are driving faster than 28 mph
(45 km/h).
R the surroundings are dark, e.g. when
driving outside built-up areas without
street lighting.
Only one pedestrian or one object can be
illuminated with the spotlight at any one time.
The spotlight function will not function if:
R pedestrians or objects cannot be
recognized due to fast cornering.
R pedestrians or objects are on the driver's
side of the vehicle.If you switch to symmetrical low beam
( Y page 244), pedestrians or objects on the
front-passenger side of the vehicle will not
be recognized instead.
It may be the case that pedestrians and other
objects are inadvertently illuminated.
Activating/deactivating Night View
Assist Plus with spotlight function
You can only activate Night View Assist Plus
with spotlight function if:
R the SmartKey is in position 2 in the ignition
lock.
R it is dark.
R the "Adaptive Highbeam Assist" function is
activated via the on-board computer
( Y page 344).
R the light switch is in position c.
R the combination switch is pushed forward
beyond the point of resistance.
R reverse gear has not been engaged.
XTo activate: activate Adaptive Highbeam
Assist ( Y page 248).XPress button :.
The Night View Assist Plus with spotlight
function display appears in the
multifunction display.318Driving systemsDriving and parking

Display for a slow-moving vehicle (example)
:Night View Assist Plus display;Pedestrian recognized=Framing?Symbol for active spotlight function
(example)ASpeed display
The active spotlight function symbol ?
changes according to the vehicle's speed and
surroundings.
Symbols for the active spotlight function
:Symbol for stationary vehicle and when
driving on well-lit roads;Symbol at speeds above approximately
6 mph (10 km/h)=Symbol at speeds above approximately
28 mph (45 km/h)
You can read about how to adjust the
brightness of the multifunction display in the
"COMAND" section ( Y page 114).
i The spotlight function only switches on
when the vehicle is driving at speeds of at
least 28 mph (45 km/h). Therefore, when
the vehicle is stationary or moving slowly,
you cannot check whether Night View
Assist Plus with spotlight function is
operating.
When you activate Night View Assist Plus with
spotlight function, speed display A in the
multifunction display changes. Speed display
A is shown as a bar at the bottom edge of
the multifunction display. This line is no
longer available for basic menus. You have to
deactivate Night View Assist Plus with
spotlight function if you wish to change a
setting using the buttons on the multifunction
steering wheel.XTo deactivate the spotlight function
briefly: move the combination switch back
to its normal position.
The spotlight function and the Adaptive
Highbeam Assist are deactivated.
If you push the combination switch forward
beyond the point of resistance again, both
systems are reactivated.XTo deactivate: press button : again.XDeactivate the Adaptive Highbeam Assist
( Y page 248).
i
If you do not wish to use the spotlight
function, you first need to deactivate Night
View Assist Plus and then activate it again
without the spotlight function
( Y page 319).
Activating/deactivating Night View
Assist Plus without spotlight function
Driving systems319Driving and parkingZ

You can only activate Night View Assist Plus
without spotlight function if:
R the SmartKey is in position 2 in the ignition
lock.
R it is dark.
R the light switch is in the c or L
position.
R reverse gear has not been engaged.XTo activate: press and hold button : until
the active spotlight function symbol in the
Night View Assist Plus display in the
multifunction display goes out.
If you drive faster than approximately
6 mph (10 km/h), the symbol for active
pedestrian recognition without spotlight
function appears instead.:Night View Assist Plus display;Pedestrian recognized=Framing?Symbol for active pedestrian recognition
without spotlight functionASpeed display
You can find out more about adjusting the
brightness of the multifunction display in the
"COMAND" section ( Y page 114).
i The infrared lamps switch on
automatically from a speed of about 6 mph
( 10 km/h). This means that you do not have
the full visual range while the vehicle is
stationary and cannot check whether Night
View Assist Plus is working.
When you activate Night View Assist Plus,
speed display A in the multifunction display
changes. Speed display A is shown as a bar
at the bottom edge of the multifunction
display. This line is no longer available for
basic menus. You have to deactivate Night
View Assist Plus if you want to change a
setting using the buttons on the multifunction
steering wheel.XTo deactivate: press button : again.
i
If you want to use the spotlight function
as well, you first need to deactivate Night
View Assist Plus and then reactivate it with
the spotlight function ( Y page 318).
Fogged up or dirty windshield
If the windshield in front of the camera is
fogged up or dirty on the inside or outside, the
Night View Assist Plus display is affected.
GWARNING
Please do not forget that your primary
responsibility is to drive the vehicle. A driver's
attention to the road must always be his/her
primary focus when driving. For your safety
and the safety of others, stop before trying to
remove window fogging or cleaning the
windshield in front of the Night View Assist
Plus camera.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet
(approximately 14 m) every second.
XTo defrost: check the automatic air
conditioning settings (Y page 260) and fold
down the camera cover ( Y page 419).XTo defrost the inside of the windshield:
fold down the camera cover ( Y page 419)
and clean the windshield ( Y page 417).320Driving systemsDriving and parking

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 252).The windshield is smeared after the vehicle has been cleaned in a
car wash.XClean the windshield ( Y page 417).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 260).The windshield is iced up.XDe-ice the windshield ( Y page 259).There is dirt on the inside of the windshield.XClean the inside of the windshield ( Y page 417).Active Driving Assistance package
General notes
The Active Driving Assistance package
consists of DISTRONIC PLUS ( Y page 292),
Active Blind Spot Assist ( Y page 321) and
Active Lane Keeping Assist ( Y page 324).
Active Blind Spot Assist
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 speeds of approximately
20 mph (30 km/h).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 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
Driving systems321Driving and parkingZ

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, such as 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 sensor areas on the
bumpers and the sensor cover in the radiator
grill are free of dirt, ice and 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 radar
sensors checked at a qualified specialist
workshop. Blind Spot Assist may otherwise
not work properly.
Indicator and warning display:Yellow indicator lamp/red warning lamp
When Active Blind Spot Assist is activated,
indicator lamp : lights up yellow in the
exterior mirrors up to a vehicle speed of
20 mph (30 km/h). When the vehicle speed
exceeds 20 mph (30 km/h), the indicator
lamp goes out and Active Blind Spot Assist is
ready for use.
When your speed exceeds approximately
20 mph (30 km/h), warning lamp : lights up
red on the corresponding side whenever a
vehicle is detected in the blind spot
monitoring range. This warning is always
given when a vehicle enters the blind spot
monitoring range from behind or from the
side. When you are passing another vehicle,
the warning is emitted only 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, Active Blind
Spot Assist is no longer active.
The brightness of the indicator/warning
lamps is adjusted automatically according to
the ambient light.GWARNING
Active Blind Spot Assist is not active at speeds
lower than 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.
Visual and audible collision warnings
If you switch on the appropriate turn signals
and a vehicle is detected in the side
monitoring range, you will receive a visual and
acoustic collision warning. You will hear a
double warning tone and red warning
lamp : flashes. If the turn signal remains on,
vehicles detected are indicated by the
flashing of red warning lamp :. 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 range between 20 mph
(30 km/h) and 120 mph (200 km/h).
If a course-correcting brake application
occurs, red warning lamp : flashes in the
Driving systems323Driving and parkingZ

exterior mirror and the following is shown in
the multifunction display, for example:GWARNING
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 AssistXMake sure that the radar sensor system
( Y page 344) and Active Blind Spot Assist
( Y page 343) 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 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 have selected the Display Unit
Speed-/Odometer (Y page 344) function in
the on-board computer and select km as the
unit of measurement, Active Lane Keeping
324Driving systemsDriving and parking