
Other vehicles changing lane
DISTRONIC PLUS has not detected the vehi-
cle cutting in yet. The distanc
etothis vehicle
will be too short.
Narrow vehicles DISTRONIC PLUS has not yet detected the
vehicle in fron
tonthe edge of the carriage-
way,b ecause of its narrow width. The dis-
tance to the vehicle in front will be too short.
Obstructions and stationary vehicles DISTRONIC PLUS does not brake for obsta-
cles or stationary vehicles. If, for example, the detected vehicle turns
acorner and reveals
an obstacle or stationary vehicle, DISTRONIC
PLUS will not brake for these.
Crossing vehicles DISTRONIC PLUS may detect vehicles that
are crossing your lane by mistake. Activating
DISTRONIC PLUS at traffic lights with cross-
ing traffic, for example, could cause your vehi-
cle to pull away unintentionally.
SPEEDTRONIC
Important safety notes SPEEDTRONIC brakes automatically so that
you do not exceed the set speed. On long and
steep downhill gradients, especiallyift
he
vehicle is laden or towing atrailer, you must
shift to alower gear in good time or select
shift range 1,2or 3on vehicles with auto-
matic transmission. By doing so, you will
make use of the braking effect of the engine,
which relieves the load on the brake system
and prevents the brakes from overheating
and wearing too quickly. If you need addi-
tional braking, depress the brake pedal
repeatedly rather than continuously. G
WARNING
Never depress the brake pedal continuously
while the vehicle is in motion, e.g. never cause
the brakes to rub by applying constant slight
pedal pressure. This causes the brake system
to overheat, increases the braking distance
and can lead to the brakes failing completely. 180
Driving systemsDriving and parking

HOLD function
General notes The HOLD function can assist the drive
rinthe
following situations:
R when pulling away,e speciallyonsteep
slopes
R when manoeuvring on steep slopes
R when waiting in traffic
The vehicle is kept stationary without the
driver having to depress the brake pedal.
The braking effect is cancelled and the HOLD
function is deactivated when you depress the
accelerator pedal to pull away.
Activation conditions You can activate the HOLD function if:
R the vehicle is stationary.
R the engine is running or if it has been auto-
matically switched off by the ECO start/
stop function.
R the driver's door is closed or if your seat
belt is fastened.
R the parking brake is not applied.
R the bonnet is closed.
R the selector lever is in position D,Ror Non
vehicles with automatic transmission.
R DISTRONIC PLUS is deactivated.
Activating the HOLD function X
Make sure that the activation conditions
are met.
X Depress the brake pedal. Example: vehicles with automatic transmission X
Quickly depress the brake pedal further
until HOLD display
:appears in the multi-
function display.
The HOLD function is activated. You can
release the brake pedal.
i If depressing the brake pedal the first
time does not activate the HOLD function,
wait briefly and then try again. G
WARNING
The vehicle's brakes are applied when the
HOLD function is activated. For this reason,
deactivate the HOLD function if the vehicle is
to be set in motion by other means (e.g. in a
car wash or by towing).
Deactivating the HOLD function The HOLD function is deactivated automati-
cally if:
R
you accelerate. The transmission is in posi-
tion Dor Ron vehicles with automatic
transmission.
R the transmission is in position Pon vehicles
with automatic transmission.
R you apply the brakes again with acertain
amount of pressure until HOLD disappears
from the multifunction display.
R you activate DISTRONIC PLUS. G
WARNING
Never get out of the vehicle when the HOLD
function is activated.
The HOLD function must never be operated
or deactivated by apassenger or from outside
the vehicle.
The HOLD function does not replace the park-
ing brake and must not be used for parking. 184
Driving systemsDriving and parking

Deactivating/activating PARKTRONIC
:
Indicator lamp
; To deactivate/activat ePARKTRONIC
If indicator lamp :lights up, PARKTRONIC is
deactivated. Parking Guidance is also deacti-
vated.
i PARKTRONIC is automatically activated
when you turn th ekeyto position 2in the
ignition lock.
Trailer towing PARKTRONIC is deactivated fo
rthe rear area
when you establish an electrical connection
between your vehicle and atrailer.
! Fold in the ball coupling if the trailer tow
hitch is not required. PARKTRONIC meas-
ures the minimum detection range to an
obstacle from the bumper, not the ball cou-
pling. 188
Driving systemsDriving and parking

X
To revers eintot he parking space: main-
tai nt he steering wheel angle and reverse
carefully.
X Stop as soon as you hear awarning tone,
at the latest when PARKTRONIC sounds the
continuous warning tone.
The Parking Guidance finished mes-
sage appears in the multifunction display
and awarning tone sounds. You may be
asked to steer in adifferen tdirection and
the nchange gear. In this case, further dis-
playsint he multifunction displayw ill direct
you to the final position.
X Manoeuvre if necessary.
X Always observe the warning messages dis-
played by PARKTRONIC (Y page 187).
Cancelling Parking Guidance X
Press the PARKTRONIC button on the
centre console (Y page 188).
Parking Guidance is cancelled immediately
and PARKTRONIC is deactivated.
Parking Guidance is cancelled automatically
if it is no longer possible to guide you into the
parking space, or if amalfunction occurs.
The parking space symbol goes out and a
warning tone sounds. The Parking Guid‐ance cancelled message appears in the
multifunction display.
Trailer towing For vehicles with
atrailer tow hitch, the min-
imum length for parking spaces is slightly
increased.
If you have attached atrailer to your vehicle,
you should not use Parking Guidance. When
the electrical connection is established
between your vehicle and the trailer, Parking
Guidance ceases to be available. PARK-
TRONIC is deactivated for the rear area. Reversing camera
Important safety notes The reversing camera is an optical parking
aid. It shows the area behind your vehicle in
the COMAND APS display.
G
WARNING
Make sure that no persons or animals are in
the manoeuvring range. Otherwise, they
could be injured.
The reversing camera is located in the handle
strip of the boot lid. Example: Coupé
:
Reversing camera
View through the camera The area behind the vehicle is displayed as a
mirror image, as in the rear-view mirror.
G
WARNING
The reversing camera is only an aid and may
display obstacles in adistorted or incorrect
manner, or may not even display them at all.
The reversing camera does not relieve you of
the responsibility to pay attention. The cam-
era cannot show objects:
R very near to the rear bumper
R below the rear bumper
R in the area immediately above the boot lid
handle
You are always responsible for safety and
must continue to pay attention to your imme-
diate surroundings when parking and 192
Driving systemsDriving and parking

the warning onl
yoccurs if the differenc ein
spee dislesst han1 2km/h.
The yellow indicator lamp goes out if reverse
gearise ngaged. Blind Spot Assist is then
deactivated.
The brightness of the indicator/warning
lamps is adjusted automaticallya ccording to
the ambient light. G
WARNING
Blind Spot Assist is not active at speeds below
30 km/h, and the indicator lamps in the exte-
rior mirrors are yellow. Vehicles in the moni-
toring range are then not indicated.
Always pay attention to traffic conditions and
your surroundings. Otherwise, you may fail to
recognise dangers in time, cause an accident
and injure yourselfa nd others.
Collisio nwarning
If av ehicl eisd etected in the monitoring range
of Blind Spo tAssist and you switch on the turn
signal, adoublew arning 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
X Make sure that the radar sensor system
(Y page 229) and Blind Spot Assist
(Y page 224) are activated in the on-board
computer.
X Turn the key to position 2in the ignition
lock.
Warning lamps :light up red in the exte-
rior mirrors for approximately 1.5 seconds
and then turn yellow.
Trailer towing
If you attach atrailer, make sure you have
correctly established the electrical connec-
tion. This can be accomplished by checking
the trailer lighting. In this event, Blind Spot
Assist is deactivated. The indicator lamp in
the exterior mirrors lights up yellow, and the
Blind Spot Assist currently unavail‐ able See Owner's Manual message
appears in the multifunction display.
i You can deactivate the indicator lamps in
the exterior mirrors.
To do so, switch off Blind Spot Assist if:
R the key is in position 2in the ignition
lock.
R the engine is not running.
R the electrical connection to the trailer
has been established.
Lane Keeping Assist Important safety notes
Lane Keeping Assist monitors the area in
front of your vehicle by means of
acamera at
the top of the windscreen. Lane Keeping
Assist detectsl ane markings on the road and
warns you before you leave your lane unin-
tentionally.
If you have chosen the (Y page 225) function
in the on-board computer and select km as
the unit of measurement, Active Lane Keep-
ing Assist is active from speeds of 60 km/h.
If the displayu nit is selected, the assistance
range begins at 40 mph. G
WARNING
Lane Keeping Assist does not keep your vehi-
cle 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 func-
tion if:
R there is poor visibility, e.g. due to insuffi-
cient illumination of the road, or due to
snow, rain, fog or spray.
R there is glare, e.g. from oncomingt raffic,
the sun, or reflection from other vehicles.
R the windscreen is dirty, misted up or cov-
ered, for instancebyas ticker, in the vicinity
of the camera
R several or no lane markings for asingle lane
are present. 198
Driving systemsDriving and parking

R
ad riving safety system intervenes, suc has
ESP ®
or PRE-SAFE ®
Brake.
R ESP ®
is deactivated.
R al oss of tyr epressure or adefective tyr eis
detected.
Activating Activ eBlind Spot Assist
X Mak esure that th eradar sensor system
(Y page 229) and Activ eBlindS potA ssist
(Y page 224) are activated in th eon-bo ard
computer.
X Turn th ekeyto position 2in th eignition
lock.
Warning lamps :light up red in th eexte-
rior mirror sfor approximately 1. 5seconds
and then tur nyellow.
Trailer towing
If you attac hatrailer, make sure you have
correctly established the electrical connec-
tion .This can be accomplished by checking
the trailer lighting. Active Blind Spot Assist is
then deactivated. The indicator lamp in the
exterior mirrors lights up yellow, and the
Active Blind Spot Assist currently unavailable See Owner's Manual mes-
sage appears in the multifunction display.
Active Lane Keeping Assist Important safety notes
Active Lane Keeping Assist monitors the area
in front of your vehicle by means of
acamera
at the top of the windscreen. Active Lane
Keeping Assist detectsl ane markings on the
road and warns you before you leave your
lane unintentionally. If you do not react to the
warning, alane-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 225) function in
the on-board computer and select kmkm as
the unit of measurement, Active Lane Keep-
ing Assist is active from speeds of 60 km/h.
If the miles displayu
nit is selected, the assis-
tance range begins at 40 mph. G
WARNING
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 func-
tion if:
R several or no lane markings for asingle lane
are present.
R there is poor visibility, e.g. due to insuffi-
cient illumination of the road, or due to
snow, rain, fog or spray.
R there is glare, e.g. from oncomingt raffic,
the sun, or reflection from other vehicles.
R the windscreen is dirty, misted up or cov-
ered, for instancebyas ticker, in the vicinity
of the camera.
R the lane markings are worn away,d ark or
covered up, e.g. by dirt or snow.
R the distance to the vehicle in front is too
small and the lane markings thus cannot be
detected.
R the lane markings on the road are unclear,
e.g. near roadworks. 202
Driving systemsDriving and parking

ings
.You can, for example, countersteer gen-
tly at any time to cancel inappropriate braking
action, e.g. if you intentionally drive across a
solid lane marking.
Active Lane Keeping Assist cannot take
weather conditions into account.
You are responsible for the vehicle's speed,
correc tsteerin gand for braking in good time.
Alway sadapt your drivin gstyle to suit the
prevailing road and weather conditions.
Always pay attention to traffic conditions and
your surroundings. Otherwise, you may fail to
recognise dangers in time, cause an accident
and injure yourself and others.
No lane-correcting brake application occurs
if:
R you clearly and actively steer, brake, or
accelerate.
R you cut the corner on asharp bend.
R you have switched on the turn signals.
R ad riving safety system intervenes, such as
ESP ®
,P RE-SAFE ®
Brake or Active Blind
Spot Assist.
R you have adopted asporty driving style with
high cornering speeds or high rates of
acceleration.
R on vehicles with atrailer tow hitch, the
electrical connection to the trailer has been
correctly established.
R ESP ®
is deactivated.
R the transmission is not in position D.
R al oss of tyre pressure or adefective tyre
has been detected and displayed.
Active Lane Keeping Assist does not detect
road and traffic conditions. An inappropriate
brake application may be interrupted at any
time if:
R you steer slightly in the opposite direction.
R you use aturn signal.
R you clearly brake or accelerate. Al
ane-correcting brak eapplicatio nisinter-
rupted automaticallyi f:
R ad riving safety system intervenes, such as
ESP ®
,P RE-SAFE ®
Brake or Active Blind
Spot Assist.
R lane markings can no longer be recognised.
Activating Active Lane Keeping Assist Example: vehicles with automatic transmission
X
Activate Active Lane Keeping Assist using
the on-board computer (Y page 224).
Symbol :appears in the multifunction
display.
If you drive at speeds above 60 km/h and
lane markings are detected, symbol :is
displayed with inverse highlighting. Active
Lane Keeping Assist is ready for use.
Trailer towing
If you attach atrailer, make sure you have
correctly established the electrical connec-
tion. This can be accomplished by checking
the trailer lighting. Trailer towing
Notes on towing
atrailer
Important safety notes G
WARNING
When reversing the vehicl etowards the
trailer, make sure there is nobod ybetween
the trailer and the vehicle.
Couple and uncoupl ethe trailer carefully .If
you do no tcouple the trailer to the towing
vehicle correctly, the trailer could become
detached. 204
Trailer towingDriving and parking

Make sure that the following values are not
exceeded:
R the permissible trailer drawbar noseweight
R the permissible trailer load
R the permissible rear axle load of the towing
vehicle
R the maximum permissible gross vehicle
weight of both the towing vehicle and the
trailer
You will find the applicable permissible val-
ues, which must not be exceeded, in the vehi-
cle documents.
You will find the values approved by the man-
ufacturer on the vehicle identification plates
and those for the towing vehicle in the "Tech-
nical data" section. G
WARNING
If the Check trailer hitch locking mechanism message appears in the multi-
function display while the vehicle is in motion,
pull over immediately and check whether the
ball coupling is correctly engaged. G
WARNING
Always observe the maximum speed permit-
ted in Germany for vehicle/trailer combina-
tions, even in countries where higher speeds
are permitted. This lowers the risk of an acci-
dent. G
WARNING
Never depress the brake pedal continuously
while the vehicle is in motion, e.g. never cause
the brakes to rub by applying constant slight
pedal pressure. This causes the brake system
to overheat, increases the braking distance
and can lead to the brakes failing completely. G
WARNING
On no account should you attempt to draw the
vehicle/trailer combination out by increasing
speed. General information i
When towing atrailer, set the tyre pres-
sure on the rear axle of the towing vehicle
for am aximum load; see the tyre pressure
table in the fuel filler flap (Y page 321).
You will find installation dimensions and loads
in the "Technical data" section
(Y page 343).
The maximum permissible trailer drawbar
noseweight on the ball coupling is 75 kg.
However, the actual noseweight must not
exceed the value given on the trailer tow hitch
and trailer identification plates. The lowest
weight applies.
! Use anoseweight as close as possible to
the maximum permissible noseweight. Do
not use anoseweight of less than 50 kg,
otherwise the trailer may come loose.
Bear in mind that the payload and the rear
axle load are reduced by the actual nose-
weight.
Please note that when towing atrailer, PARK-
TRONIC (Y page 185) and parking guidance
(Y page 189) are only available with limita-
tions, or not at all.
i The height of the ball coupling changes
with the load of the vehicle. If necessary,
use atrailer with aheight-adjustable draw-
bar.
Driving tips i
Observe the notes on ESP ®
trailer stabi-
lisation (Y page 65).
In Germany, the maximum permissible speed
for vehicle/trailer combinations depends on
the type of trailer, and is either 80 km/h or
100 km/h. In some countries, higher maxi-
mum speeds are permissible for vehicle/
trailer combinations. Before beginning the
journey, check the trailer's documents to see
what the maximum permitted speed is.
For certain Mercedes-Ben zvehicles, the max-
imum permissible rear axle load is increased
when towing atrailer. Refer to the "Technical Trailer towing
205Driving and parking Z