30 km/h, warning lamp
:on the corre-
sponding sid elights up red. Thi swarning is
always emitted whe navehicle enters the
blind spot monitoring range from behind or
from the side .When you overtake avehicle,
the warning only occurs if the difference in
speed is less than 12 km/h.
The yellow indicator lamp goes out if reverse
gear is engaged. Active Blind Spot Assist is
then no longer active.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 30 km/h. The indicator lamps in the
exterior mirrors are yellow.V ehicles in the
monitoring 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 yourself and others.
Visua land acoustic collisio nwarning
If you switch on the appropriate turn signals
to change lanes, and avehicle is detected in
the side monitoring range of Active Blind Spot
Assist ,you will receive avisual and acoustic
collision warning. You will then hear adouble
warning tone, and red warning lamp :
flashes. If the turn signal remains on, detec-
ted vehicles are indicated by the flashing of
red warning lamp :.There are no further
warning tones.
Course-correcting brak eapplication
If Active Blind Spot Assist detects arisk of a
lateral collision in the monitoring range, a
course-correcting brake application is carried
out. This is designed to help you avoid acol-
lision.
The course-correcting brake application is
available in the range between 30 km/ha nd
200 km/h.
If ac ourse-correcting brake application
occurs, red warning lamp :flashe sinthe exterio
rmirro rand the following is shown in
the multifunctio ndisplay, for example: Example: vehicles with automatic transmission
G
WARNING
Activ eBlindS pot Assist is only an aid
designed to assist driving. It is not asubstitute
for attentive driving. Automatic braking by the
system may not always be sufficien ttoavoid
ac ollision. In such cases, you need to steer,
brake or accelerate yourself.
In very rare cases, the system may detect a
risk of collision where there is none and brake
in error near crash barriers or similar road
boundaries. Active Blind Spot Assist cannot
detect all traffic situations and road users.
Ensure at all times that there is sufficient lat-
eral distance between you and other road
users or obstacles. You can, for example,
countersteer gently or depress the accelera-
tor pedal at any time to cancel inappropriate
braking action.
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.
Either avery slight course-correcting brake
application, or none at all, may occur if:
R there are vehicles or obstacles, e.g. crash
barriers, on both sides of your vehicle.
R av ehicle approaches too closely on the
side.
R you have adopted asporty driving style with
high cornering speeds.
R you brake or accelerate decisively. Driving systems
201Driving and parking Z
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
X
Press =or; on the steerin gwheel
to select the Assist. menu.
X Press 9or: to select Speed Lim.
Asst. .
X Press a.
The multifunction display shows Speed
Limit Assist.
X Press :.
The curren tselection is displayed.
X To activate or deactivate: pressa.
If Speed Limit Assist is operational and the
message function is activated, the multifunc-
tion display shows the Äsymbol when the
ignition is switched on.
Showing the distance display This function is only available with DIS-
TRONIC PLUS.
X Press =or; on the steering wheel
to select the Assist. menu.
X Press the 9or: button to select
Distanc edisplay .
X Press a.
The DISTRONIC PLUS distanc edisplay
(Y page 178)a ppears in the multifunction
display.
Deactivating/activating ESP ®G
WARNING
If the ä warning lamp in the instrument
cluster flashes, proceed as follows:
R do not deactivat eESP®
under any circum-
stances.
R only depress the accelerator pedal as far as
necessary when pulling away.
R adapt your driving style to suit the prevail-
ing road and weather conditions.
Otherwise, the vehicle could skid.
ESP ®
cannot reduce the risk of an acciden tif
you drive to ofast. ESP ®
canno toverride the
laws of physics. Fo
rfurther information about ESP ®
,s ee
(Y page 64).
X Start th eengine.
X Press =or; on thesteerin gwheel
to select the Assist. menu.
X Press the 9or: buttontos elect
ESP .
X Press the abutton.
X To deactivate: pressaagain.
The å warning lamp in the instrument
cluster comes on. G
WARNING
If the å warning lamp in the instrument
cluster lights up when the engine is running,
ESP ®
is deactivated or is unavailabl edue to a
malfunction. The risk that your vehicle may
start to skid then increases in certain situa-
tions.
Always adapt your driving style to the prevail-
ing road and weather conditions.
X To activate: pressaagain.
The å warning lamp in the instrument
cluster goes out.
Activating/deactivating the PRE-SAFE ®
Brake PRE-SAFE
®
Brake is only available in vehicles
with DISTRONIC PLUS.
X Press =or; on the steerin gwheel
to select the Assist. menu.
X Press 9or: to select PreSafe Brake .
X Press the abutton.
The current selection is displayed.
X To activate/deactivate: pressa
again.
When PRE-SAFE ®
Brake (Y page 66) is acti-
vated, the multifunction display shows the
Ä symbol as long as the HOLD function is
not activated (Y page 184). Menus and submenus
223On-board computer and displays Z
X
Press the :or9 button to select the
Acoustic Lock function.
If the Acoustic Lock function is activated,
the & symbol in the multifunction dis-
play lights up red.
X Press the abutton to save the setting.
Activating/deactivating the radar sensor
system
i You must deactivate the radar sensor sys-
tem in certain countries and near radio
telescope facilities. For further informa-
tion, see (Y page 345).
Vehicles with anavigation system: the radar
sensor system is deactivated automatically if
you are close to radio telescope facilities.
The following systems are switched off when
the radar sensor system is deactivated:
R DISTRONIC PLUS (Y page 171)
R BAS PLUS (Y page 62)
R PRE-SAFE ®
Brake (Y page 66)
R Blind Spot Assist (Y page 196)
R Active Blind Spot Assist (Y page 199)
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Vehicle submenu.
X Press the abutton to confirm.
X Press the 9or: button to select
Radar sensor (See Owner's Man.): .
You will see the selected setting: on or
off .
X Press the abutton to save the setting.
Heating menu Auxiliary heating departuret
ime
This function is only availabl eonvehicles with
auxiliary heating (Y page 137).
In the Heating submenu, you can select a
stored departure time or change adeparture
time. The auxiliary heating timer function calcu-
lates the switch-on time accordin
gtothe out-
side temperature so that the vehicle is pre-
heated by the departure time. When the
departure time is reached, the auxiliary heat-
ing continues to heat for afurther five
minutes and then switches off. The auxiliary
heating adopts the THERMATIC or
THERMOTRONIC temperature setting.
You can switch off the auxiliary heating by
using the remot econtrol or the auxiliary heat-
ing button on the centre console. G
WARNING
Exhaust fumes are produced when the auxili-
ary heating is in operation. Inhaling these
exhaust fumes can be poisonous. You should
therefore switch off the auxiliary heating in
confined spaces without an extraction sys-
tem, e.g. agarage. G
WARNING
When operating the auxiliary heating parts of
the vehicle can get very hot. Make sure that
the exhaust system does not under any cir-
cumstances come into contact with easily
ignitable material such as dry grass or fuels.
The material could otherwise ignite and set
the vehicle alight. Choose your parking spot
accordingly.
Operating the auxiliary heating is thus pro-
hibited at filling station sorwhen your vehicle
is being refuelled. You must therefore switch
off the auxiliary heating at filling stations.
! Operating the auxiliary heating/ventila-
tion draws on the vehicle battery. After you
have heated or ventilated the vehicle a
maximum of two times, drive for alonger
distance.
i Switc hthe auxiliary heating on regularly
once amonthfor about 10 minutes. Menus and submenus
229On-board computer and displays Z
Selecting the departuret
ime or deactivat-
ing aselected departuret ime
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Heating submenu.
X Press the abutton to confirm.
You will see the selected setting.
X Press the abutton to confirm.
X Press the :or9 button to select
one of the three departure times or Timeroff (no timer active).
X Press the abutton to confirm.
When adeparture time is selected, the yel-
low indicator lamp lights up on the auxiliary
heating button.
Changing the departuret ime
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Heating submenu.
X Press the abutton to confirm.
You will see the selected setting.
X Press the abutton to confirm.
X Press the :or9 button to select
Change A ,
B or
C .
X Press the abutton to confirm.
You can now change the departure time.
X Press the =or; button to select the
display to be changed: hours, minutes.
X Press the :or9 button to set the
selected display.
X Press the abutton to store the entry.
The yellowi ndicator lamp on the auxiliary
heating button lights up.
Convenience Activating/deactivating the EASY-
ENTRY/EXIT feature
You can use the Easy Entry/Exit: function
to activate or deactivate the EASYE NTRY/
EXIT feature (Y page 108). G
WARNING
The steering wheel moves when the EASY-
ENTRY/EXIT feature is active. There is arisk
of occupants becoming trapped. Before acti-
vating the EASY-ENTRY/EXIT feature, make
sure that nobody can become trapped.
Do not leave children unsupervised in the
vehicle, even if they are secured in achild
restraint system. The children could open the
driver's door and thereby unintentionally acti-
vate the EASY-ENTRY/EXIT feature and
become trapped.
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Convenience submenu.
X Press the abutton to confirm.
X Press the :or9 button to select the
Easy Entry/Exit function.
If the Easy Entry/Exit function is activa-
ted, the vehicle steering wheel is displayed
in red in the multifunction display.
X Press the abutton to save the setting.
Switching the belt adjustment on/off
For further information on belt adjustment,
see (Y page 49).
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Convenience submenu.
X Press the abutton to confirm.
X Press the :or9 button to select the
Belt adjustment function.
When the Belt adjustment function is
activated, the vehicle seat belt is displayed
in red in the multifunction display.
X Press the abutton to save the setting.
Switching the Fold in mirrors when lock-
ing function on/off
If you switch on the Auto. fold in function,
the exterior mirrors fold in when you lock the
vehicle. When you unlock the vehicle and then 230
Menus and submenusOn-board computer and displays
Safety systems
Display messages Possible causes/consequences and
M Solutions
!÷
currently unavail‐
able See Owner's
Manual G
Risk of accident
ABS,E SP®
,B AS ,PRE-SAFE ®
,t he HOLD function, hill start assist
and ESP ®
trailer stabilisation are temporarily not available.
The adaptive brake lights, BAS PLUS and PRE-SAFE ®
Brake may
also have failed.
In addition, the ä,åand! warning lamps light up in
the instrumen tcluster.
For example, the on-board voltage may be insufficient.
ATTENTIONA SSIST is deactivated.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
X Drive on carefully.
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
X Drive on carefully.
X Visit aqualified specialist workshop. !÷
inoperative See
Owner's Manual G
Risk of accident
ABS,E SP®
,B AS ,PRE-SAFE ®
,t he HOLD function, hill start assist
and ESP ®
trailer stabilisation are not available due to amalfunc-
tion.
The adaptive brake lights, BAS PLUS and PRE-SAFE ®
Brake may
also have failed.
In addition, the J,ä,åand! warning lamps light
up in the instrumen tcluster.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
ATTENTION ASSIST is deactivated.
X Drive on carefully.
X Visit aqualified specialist workshop immediately. Display messages
233On-board computer and displays Z
Display messages Possible causes/consequences and
M Solutions
÷
inoperative See
Owner'
sManual G
Risk of accident
ESP ®
,B AS ,PRE-SAFE ®
,t he HOLD function ,hill start assist and
ESP ®
trailer stabilisation are no tavailabled ue toamalfunction.
The adaptive brake lights, BAS PLUS and PRE-SAFE ®
Brake may
alsoh ave failed.
In addition, the äandå warning lamp slight up in the
instrument cluster.
ATTENTION ASSIST is deactivated.
The brake system continues to function normally, but without the
functions listed above.
X Drive on carefully.
X Visi taq ualified specialist workshop. T!
÷ G
Risk of accident
EBD( electronic brake forc edistribution), ABS, ESP ®
,B AS ,PRE-
SAFE ®
,t he HOLD function ,hill start assist and ESP ®
trailer stabi-
lisatio nare not available due to amalfunction.
The adaptive brake lights, BAS PLUS and PRE-SAFE ®
Brake may
alsoh ave failed.
In addition, the ä,åand! warning lamp slight up in
the instrument cluster and awarning tone sounds.
ATTENTION ASSIST is deactivated.
The brake system continues to function normally, but without the
functions listed above. The wheels coul dtherefore lock if you
brake hard ,for example.
X Drive on carefully.
X Visi taq ualified specialist workshop immediately. J
Releas
eparking brake You are drivin
gwith the parkin gbrake applied. Awarning tone also
sounds.
X Release th eparking brake. 234
Display messagesOn-boar
dcomputer and displays
Display messages Possible causes/consequences and
M Solutions
J
Brake immediately Am
alfunction has occurred while th eHOLDf unction or DIS-
TRONIC PLU Sisactive.
or
Vehicles wit hmanual transmission: wit hthe HOLD function acti-
vated, you hav eeither:
R opened th edriver's doo rand released the sea tbelt or
R switched off the engin eor
R opened the bonnet
At one may also sound at regular intervals. The toneb ecomes
louder if you attempt to lock the vehicle.
You cannot start the engine.
X Paying attention to the traffic situation, immediately depress the
brake pedal firmly and hold until the display message disap-
pears.
X Prevent the vehicle from rolling away before you leave it
(Y page 301).
You can restart the engine. J
Check brake fluid
level G
Risk of accident
There is insufficient brake fluid in the brake fluid reservoir. In addi-
tion, the red Jwarning lamp in the instrument cluster lights
up and awarning tone sounds.
X Pullo ver and stop the vehicl esafel yass oon as possible,p aying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Apply the parking brake.
X Consult aqualified specialist workshop.
X Do not top up the brake fluid. This does not correct the error. #
Check brake wear The brake pads/linings have reache
dtheir wearl imit.
X Visit aqualified specialist workshop. PRE-SAFE
inoperative See
Owner's Man. G
Risk of injury
Important function sofPRE-SAFE ®
have failed .All other occupant
safet ysystems, e.g. airbags, remain available.
X Visit aqualified specialist workshop immediately. Display messages
235On-board computer and displays Z