If you want DISTRONIC PLUS to assist you,
the radar sensor system must be activated
( Y page 232) and operational.
If there is no vehicle in front, DISTRONIC
PLUS operates in the same way as cruise
control in the speed range between
20 mph (Canada: 30 km/h) and
120 mph (Canada: 200 km/h). If there is a
vehicle in front, DISTRONIC PLUS is
operational in the speed range between
0 mph (Canada: 0 km/h) and
120 mph (Canada: 200 km/h).
Do not use DISTRONIC PLUS while driving on
roads with steep gradients.
As DISTRONIC PLUS emits radar waves, it can
simulate radar detectors used by police
authorities. You can refer to the applicable
section in the Operator's Manual if there are
any questions concerning this.
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.GWarning!
The DISTRONIC PLUS adaptive cruise control
is not a substitute for active driving
involvement. It does not react to pedestrians
or on stationary objects, nor does it recognize
or predict the curvature and lane layout or the
movement of preceding vehicles. The
DISTRONIC PLUS can only apply a maximum
of 40% of the vehicle's braking power.
The DISTRONIC PLUS may not detect narrow
vehicles possibly driving in front of you, such
as motorcycles and vehicles driving in an
offset formation.
It is the driver's responsibility at all times to
be attentive to the road, weather and traffic
conditions. Additionally, the driver must
provide the steering, braking and other driving
inputs necessary to remain in control of the
vehicle.
High-frequency sources such as toll stations,
speed measuring systems etc. can cause the
DISTRONIC PLUS system to temporarily
cease functioning.GWarning!
The DISTRONIC PLUS cannot take road and
traffic conditions into account. Only use the
DISTRONIC PLUS if the road, weather and
traffic conditions make it advisable to travel
at a constant speed.
GWarning!
Use of the DISTRONIC PLUS can be
dangerous on slippery roads. Rapid changes
in tire traction can result in wheel spin and
loss of control.
The DISTRONIC PLUS does not function in
adverse sight and distance conditions. Do not
use the DISTRONIC PLUS during conditions of
fog, heavy rain, snow or sleet.
GWarning!
The DISTRONIC PLUS cannot take weather
conditions into account. Switch off the
DISTRONIC PLUS or do not switch it on if:
R roads are slippery or covered with snow or
ice. The wheels could lose traction while
braking or accelerating, and the vehicle
could skid.
R the DISTRONIC PLUS system sensor covers
are dirty or visibility is diminished due to
snow, rain or fog, for example. The distance
control system functionality could be
impaired.
Always pay attention to surrounding traffic
conditions even while the DISTRONIC PLUS is
switched on. Otherwise, you may not be able
to recognize dangerous situations until it is
180Driving systemsDriving and parking
BA 212 USA, CA Edition B 2011; 1; 5, en-USdimargiVersion: 3.0.3.62010-05-20T13:33:46+02:00 - Seite 180
passenger door or one of the rear doors is
open.
Rthe vehicle has skidded.
If DISTRONIC PLUS is deactivated, you will
hear a warning tone. You will see the
DISTRONIC PLUS Off message in the
multifunction display for approximately five
seconds.
Tips for driving with DISTRONIC PLUS
Important safety guidelines
The following contains descriptions of certain
road and traffic conditions in which you must
be particularly attentive. In such situations,
brake if necessary. DISTRONIC PLUS is then
deactivated.
GWarning!
The DISTRONIC PLUS works to maintain the
speed selected by the driver unless a moving
obstacle proceeding directly ahead of it in the
same travel direction is detected (e.g.
following another vehicle ahead of you at your
set distance).
This means that:
RYour vehicle can pass another vehicle after
you have changed lanes.
RWhile in a sharp turn or if the preceding
vehicle is in a sharp turn, the DISTRONIC
PLUS could lose sight of the preceding
vehicle. Your vehicle could then accelerate
to the previously selected speed.
The DISTRONIC PLUS regulates only the
distance between your vehicle and those
directly ahead of it. It may not register
stationary objects in the road, e.g.:
Ra stopped vehicle in a traffic jam
Ra disabled vehicle
Ran oncoming vehicle
The driver must always be alert, observe all
traffic and intercede as required by means of
steering or braking the vehicle.
GWarning!
The DISTRONIC PLUS should not be used in
snowy or icy road conditions.
Cornering, going into and coming out of a
bend
The ability of DISTRONIC PLUS to detect
vehicles when cornering is limited. Your
vehicle may brake unexpectedly or late.
Vehicles traveling on a different line
DISTRONIC PLUS may not detect vehicles
traveling on a different line. The distance to
the vehicle in front will be too short.
Driving systems187Driving and parkingBA 212 USA, CA Edition B 2011; 1; 5, en-USdimargiVersion: 3.0.3.62010-05-20T13:33:46+02:00 - Seite 187Z
RACE START
Important safety guidelines
i RACE START is only available in AMG
vehicles.
RACE START enables optimal acceleration
from a standing start under suitable high-grip
road surface conditions.
GRisk of accident
RACE START is only available when SPORT
handling mode is activated. SPORT handling
mode only stabilizes the vehicle to a certain
extent if it is swerving or the wheels are
spinning.
RACE START may only be used on closed
roads. Always adapt your speed and driving
style to suit the current road and weather
conditions.
Conditions for activation
RACE START can be activated when:
R the doors are closed
R the engine is running and it has reached an
operating temperature of approximately
80 †. This is the case when the engine oil
temperature in the multifunction display
stops flashing.
R SPORT handling mode is activated
( Y page 69)
R the steering wheel is in the straight-ahead
position
R the vehicle is at rest and the brake pedal is
depressed (left foot)
R the transmission is in position D
Activating RACE STARTXDepress the brake pedal with your left foot,
and keep it depressed.XTurn the program selector switch
clockwise ( Y page 158) until the RS lamp
lights up.
The multifunction display shows the RACE
START Confirm: Paddle UP Cancel:
Paddle DOWN message.
i
If the conditions for activation are no
longer fulfilled, RACE START is canceled.
The multifunction display shows the RACE
START Canceled message.
XTo cancel: pull the left steering wheel shift
paddle ( Y page 159).
or
XTo confirm: pull the right steering wheel
shift paddle ( Y page 159).
The multifunction display shows the RACE
START Available Depress gas pedal
message.
i If you do not depress the accelerator
pedal fully within two seconds, RACE
START is canceled. The multifunction
display shows the RACE START Not
Possible See Operator's Manual
message.
XDepress the accelerator pedal fully.
The engine speed increases to
approximately 4000 rpm.
The multifunction display shows the RACE
START Release brake to start
message.
i If you do not release the brake pedal
within seven seconds, RACE START is
canceled. The multifunction display shows
the RACE START Canceled message.
XTake your foot off the brake, but keep the
accelerator pedal depressed.
The vehicle pulls away at maximum
acceleration.
The multifunction display shows the RACE
START Active message.190Driving systemsDriving and parking
BA 212 USA, CA Edition B 2011; 1; 5, en-USdimargiVersion: 3.0.3.62010-05-20T13:33:46+02:00 - Seite 190
Problems with PARKTRONICProblemPossible causes/consequences and M SolutionsOnly the red segments
in the PARKTRONIC
warning displays are lit.
You also hear a warning
tone for approximately
two seconds.
PARKTRONIC is
deactivated after
approximately
20 seconds, and the
indicator lamp in the
PARKTRONIC button
lights up.PARKTRONIC has malfunctioned and has switched off.XIf problems persist, have PARKTRONIC checked at a qualified
specialist workshop.Only the red segments
in the PARKTRONIC
warning displays are lit.
PARKTRONIC is
deactivated after
approximately 20
seconds.The PARKTRONIC sensors are dirty or there is interference.XClean the PARKTRONIC sensors ( Y page 317).XSwitch the ignition back on.The problem may be caused by an external source of radio or
ultrasound waves.XSee if PARKTRONIC functions in a different location.Parking Guidance
Important safety notes
Parking Guidance is an electronic parking aid
with ultrasound. Ultrasound is used to
measure the road on both sides of the vehicle.
A suitable parking space is indicated by the
parking symbol. You receive steering
instructions when parking. You may also use
PARKTRONIC ( Y page 194).
GWarning
Parking Guidance is merely an aid and may
display parking spaces that are not suitable
for parking, for example:
R no-parking areas
R parking spaces with unsuitable surfaces
(road surface)
R driveways
R entrances and exits
Parking Guidance detects and measures
potential parking spaces while driving past.
Changes to the parking space after this point
are not taken into account, for example if the
vehicle in front of or behind the parking space
changes position or objects in the parking
space are moved.
Even when using Parking Guidance, you are
still responsible for driving carefully. If you
rely on Parking Guidance alone, you could
cause an accident and injure yourself and
others.
Safety always remains your responsibility and
you must continue paying careful attention to
your immediate surroundings when parking
and maneuvering.Driving systems197Driving and parkingBA 212 USA, CA Edition B 2011; 1; 5, en-USdimargiVersion: 3.0.3.62010-05-20T13:33:46+02:00 - Seite 197Z
GWarning!
The system cannot detect objects located
above the area that the sensors scan. These
objects, e.g. protruding load, overhang, or
truck tail lifts, will be ignored when computing
the parking procedure. The Parking Guidance
might therefore provide untimely steering
instructions. This could cause a collision.
Thus, do not use the Parking Guidance in such
situations.
GWarning!
Make sure no persons or animals are in the
area in which you are maneuvering. You could
otherwise injure them.
! Pay particular attention to low objects or
objects with flat surfaces, such as trailer
drawbars, posts, cross beams and curbs.
These types of objects cannot be detected
by Parking Guidance and may damage the
vehicle.
When PARKTRONIC is deactivated, Parking
Guidance is also unavailable.
Use Parking Guidance for parking spaces:
R that are parallel to the direction of travel
R that are on straight roads, not bends
R that are on the same level as the road, i.e.
not on the pavement, for example. Parking
Guidance may not detect flat curbs
Parking tips:
R On narrow roads, drive as close to the
parking space as possible.
R Parking spaces that are littered, overgrown
or partially occupied by trailer drawbars
might be identified incorrectly or not at all.
R Snowfall or heavy rain may lead to a parking
space being measured inaccurately.
R Pay attention to the PARKTRONIC warning
messages during the parking procedure
( Y page 195).
R When transporting a load which protrudes
from your vehicle, you must not use Parking
Guidance.
R Never use Parking Guidance with snow
chains or an emergency spare wheel
installed.
R Make sure that the tire pressures are
always correct. This has a direct effect on
the steering instructions.
R The way your vehicle is positioned in the
parking space after parking is dependent
on various factors. These include the
position and shape of the vehicles parked
in front and behind it and the conditions of
the location. In some cases, Parking
Guidance may guide you too far or not far
enough into a parking space. In some
cases, it may also lead you across or onto
the curb. If necessary, cancel the parking
procedure with Parking Guidance.
! If unavoidable, you should drive over
obstacles such as curbs slowly and not at
a sharp angle. Otherwise, you may damage
the wheels or tires.
Detecting a parking space
Example
:Detected parking space on the left;Parking symbol=Detected parking space on the right
Parking Guidance is automatically activated
when you drive forwards. The system is
operational at speeds of up to approximately
22 mph (35 km/h). While in operation, the
system independently locates and measures
parking spaces on both sides of the vehicle.
When driving at speeds below 19 mph
( 30 km/h), you will see parking symbol ; as
a status indicator in the instrument cluster.
When a parking space has been detected, an
arrow towards the right = or the left : also
198Driving systemsDriving and parking
BA 212 USA, CA Edition B 2011; 1; 5, en-USdimargiVersion: 3.0.3.62010-05-20T13:33:46+02:00 - Seite 198
appears. Parking Guidance only displays
parking spaces on the front-passenger side
as standard. Parking spaces on the driver's
side are displayed as soon as the turn signal
on the driver's side is activated. To park on
the driver's side, you must leave the driver's
side turn signal switched on until you have
engaged reverse gear.
Parking Guidance will only detect parking
spaces:
R that are parallel to the direction of travel
R that are at least 5 ft (1.5 m) wide
R that are at least 4.3 ft (1.3 m) longer than
your vehicle.
A parking space is displayed while you are
driving past it, and until you are
approximately 50 ft (15 m) away from it.
ParkingGWarning!
The Parking Guidance is only an aid and may
not detect all obstacles. The Parking
Guidance does not relieve you of the
responsibility to pay attention. You are always
responsible for safety and must continue to
pay attention to your immediate surroundings
when parking and maneuvering. Otherwise,
you could endanger yourself and others.
XStop the vehicle when the parking space
symbol shows the desired parking space in
the instrument cluster.XShift the transmission to position R.
The multifunction display shows the
Check Vehicle Surroundings Press
'OK' to Confirm message.XPress a on the multifunction steering
wheel to confirm.
The multifunction display switches to
Parking Guidance.
Depending on your distance from the
parking space, the Please Drive
Backward message will appear in the
multifunction display.XIf necessary, reverse towards the parking
space. This is indicated by an arrow
pointing backwards.
Continue backing up until you hear a tone.
Stop – the parking position has been
reached. The arrow is white.
The Please Steer Wheel to the
Right or Please Steer Wheel to the
Left message appears in the multifunction
display.XWhile the vehicle is stationary, turn the
steering wheel in the specified direction
until the arrow is white and a warning tone
sounds.XTo reverse into the parking space:
maintain the steering wheel angle and
reverse carefully.XStop as soon as you hear an acoustic
signal.
The vehicle has reached the position in
which you need to countersteer.
The Please Steer Wheel to the Left
or Please Steer Wheel to the Right
message appears in the multifunction
display.XCountersteering: while the vehicle is
stationary, turn the steering wheel in the
specified direction until the arrow is white
and a warning tone sounds.Driving systems199Driving and parkingBA 212 USA, CA Edition B 2011; 1; 5, en-USdimargiVersion: 3.0.3.62010-05-20T13:33:46+02:00 - Seite 199Z
XTo reverse into the parking space:
maintain the steering wheel angle and
reverse carefully.
XStop as soon as you hear an acoustic
signal, at the latest when PARKTRONIC
sounds the continuous warning tone.
The Parking Guidance Finished
message appears in the multifunction
display and a tone sounds. You may be
asked to steer in a different direction and
then change gear. In this case, further
displays in the multifunction display will
direct you to the final position.
XManeuver if necessary.XAlways observe the warning messages
displayed by PARKTRONIC (Y page 195).
Canceling Parking Guidance
XPress the PARKTRONIC button on the
center console (Y page 196).
Parking Guidance is canceled immediately
and PARKTRONIC is deactivated.
Parking Guidance is canceled automatically if
it is no longer possible to guide you into the
parking space or if a malfunction occurs.
The parking space symbol disappears and the
Parking Guidance canceled message
appears in the multifunction display.
Rear view camera
Important safety notes
The rear view camera is an optical parking aid.
It shows the area behind your vehicle in the
COMAND display.
GWarning!
Make sure no persons or animals are in or
near the area in which you are parking/
maneuvering. Otherwise, they could be
injured.
The rear view camera is located in the handle
strip of the trunk lid/tailgate.
Sedan (example)
:Rear view camera
View through the camera
The area behind the vehicle is displayed as a
mirror image, as in the rear-view mirror.
GWarning
The rear view camera is only an aid and the
obstacle display may:
Rshow a distorted perspective
Rbe inaccurate
Rnot show obstacles at all
The rear view camera does not mean that you
are no longer responsible for driving carefully.
Be careful and be particularly alert. The rear
view camera may not show objects that are:
Rvery close to the rear bumper
Runderneath the rear bumper
Rabove the trunk handle/tailgate handle
Safety always remains your responsibility,
and you must continue paying careful
attention to your immediate surroundings
when parking and maneuvering. This includes
the area behind, in front of and beside the
vehicle. You could otherwise endanger
yourself or others.
GWarning
The rear view camera does not work or does
not work properly:
Rif the trunk lid/tailgate is open
Rin very heavy rain, snow or fog
200Driving systemsDriving and parking
BA 212 USA, CA Edition B 2011; 1; 5, en-USdimargiVersion: 3.0.3.62010-05-20T13:33:46+02:00 - Seite 200
Rat night, or if you are parking/maneuvering
your vehicle in a very dark area
R if very bright white light is shining on the
camera
R if the surrounding area is lit by fluorescent
light (the COMAND system display may
flicker)
R if the temperature changes suddenly, for
example if you drive into a heated garage
after being in the cold (condensation on the
lens)
R if the camera lens is dirty or covered
R if the rear of your vehicle is damaged
In this case, have the camera position and
setting checked at a qualified specialist
workshop. Mercedes-Benz recommends
that you use an authorized Mercedes-Benz
Center for this purpose.
Do not use the rear view camera in these
types of situation. Otherwise, you could injure
yourself and others and/or cause damage,
even to your own vehicle, when parking/
maneuvering.
Activating the rear view cameraXMake sure that the SmartKey is in
position 2 in the ignition lock.XMake sure that the "rear view camera"
function is selected in COMAND (see the
separate operating instructions for
COMAND).XEngage reverse gear.
The area behind the vehicle is shown in the
COMAND display.
ATTENTION ASSIST
Important safety notes
ATTENTION ASSIST helps you during long,
monotonous journeys, such as on highways
and arterial roads. It is active at speeds
between 50 mph (80 km/h) and 112 mph
(180 km/h).
If ATTENTION ASSIST detects fatigue or
increasing lapses in concentration on the part
of the driver, it suggests taking a break.GWarning!
The ATTENTION ASSIST is only an aid to the
driver. It might not recognize fatigue or
increasing inattentiveness in time or fail to
recognize them at all. The system cannot
substitute a rested and attentive driver.
Fatigue can cause you to recognize dangers
too late, to misjudge potential dangers, or to
react slower. Therefore, make sure to be
rested before and during your trip. Take rests
early enough and regularly, especially during
long trips. Failure to do so could cause you to
recognize dangers too late which could result
in an accident and serious injury to you and/
or 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 journey details, e.g. time of day and length
of journey
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
Driving systems201Driving and parkingBA 212 USA, CA Edition B 2011; 1; 5, en-USdimargiVersion: 3.0.3.62010-05-20T13:33:46+02:00 - Seite 201Z