ted by the flashing of red warning lamp
:.
There are no further warning tones.
Activating Blind Spot Assist X Make sure that Blind Spot Assist is activated
in the on-board computer (Y page 291).
X Turn the key to position 2in the ignition lock.
Warning lamps :in the exterior mirrors light
up red for approximately 1.5 second s and
then turn yellow.
Towing a trailer
If you couple up a trailer, make sure that you
have correctly established the electrical con-
nection. This can be accomplished by checking
the trailer lighting. Blind Spot Assist is then
deactivated. The indicator lamp lights up yellow
in the exterior mirrors and the Blind Spot Blind Spot
Assist not available when towing a
Assist not available when towing a
trailer See Owner's Manual
trailer See Owner's Manual message
appears in the multifunction display.
i You can deactivate the indicator lamps in
the exterior mirrors.
To do so, you will need to deactivate Blind
Spot Assist if:
R the key is in position 2in the ignition lock
R the engine is not running
Lane Keeping Assist General notes
:
Lane Keeping Assist camera
Lane Keeping Assist monitors the area in front of
your vehicle by means of camera :at the top of
the windscreen. Lane Keeping Assist detects
lane markings on the road and can warn you
before you leave your lane unintentionally.
This function is available in a speed range
between 60 km/h and 200 km/h. A warning may be given if a front wheel passes
over a lane marking. It will warn you by means of
intermittent vibration through the steering
wheel for up to 1.5 second s.
Im portant safety notes G
WARNING
Lane Keeping Assist cannot always clearly
identify lane markings.
In these cases, Lane Keeping Assist may:
R give an unnecessary warning
R not give a warning
There is a risk of an accident.
Always pay particular attention to the traffic
situation and keep in lane, especially if Lane
Keeping Assist alerts you. G
WARNING
The Lane Keeping Assist warning does not
return the vehicle to the original lane. There is a risk of an accident.
Always steer, apply the brakes or accelerate
the vehicle yourself, especially if Lane Keep-
ing Assist alerts you.
If you fail to adapt your driving style, Lane Keep-
ing Assist can neither reduce the risk of an acci-
dent nor override the laws of physics. Lane
Keeping Assist cannot take into account road,
weather or traffic conditions. Lane Keeping
Assist is only an aid. You are responsible for the distance to the vehicle in front, for vehicle
speed, for braking in good time and for staying in
lane.
Lane Keeping Assist does not keep your vehicle
in its lane.
The system may be impaired or may not function if:
R there is poor visibility, e.g. due to insufficient
illumination of the road, or due to snow, rain,fog or spray
R there is glare, e.g. from oncoming traffic, the
sun or reflection from other vehicles (e.g. if
the road surface is wet)
R the windscreen is dirty, misted up, damaged
or covered, for instance by a sticker, in the
vicinity of the camera
R no or several, unclear lane markings are pres-
ent for one lane, e.g. in a construction area 246
Driving systemsDriving and parking
R
the lane markings are worn away, dark or cov-
ered 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 detec-
ted
R the lane markings change quickly, e.g. lanes
branch off, cross one another or merge
R the road is narrow and winding
R there are highly variable shade conditions on
the road
Activating Lane Keeping Assist X Activate Lane Keeping Assist using the on-
board computer; to do so, select Standard
Standard or
Adaptive Adaptive (Ypage 291).
If you drive at speeds above 60 km/h and lane
markings are detected, the lines in the assis- tance graphic display (Y page 290) are
shown in green. Lane Keeping Assist is ready for use.
Standard
If Standard
Standard is selected, no warning vibration
occurs if:
R you have switched on the turn signals. In this
case, the warnings are suppressed for a cer-
tain period of time.
R a driving safety system intervenes, such as
ABS, BAS or ESP ®
.
Adaptive
When Adaptive
Adaptive is selected, no warning vibra-
tion occurs if:
R you have switched on the turn signals. In this
case, the warnings are suppressed for a cer-
tain period of time.
R a driving safety system intervenes, such as
ABS, BAS or ESP ®
.
R you accelerate hard, e.g. kickdown.
R you brake hard.
R you steer actively, e.g. swerve to avoid an
obstacle or change lane quickly.
R you cut the corner on a sharp bend.
In order that you are warned only when neces-
sary and in good time if you cross the lane mark-
ing, the system detects certain conditions and
warns you accordingly. The warning vibration occurs earlier if:
R you approach the outer lane marking on a
bend
R the road has very wide lanes, e.g. a motorway
R the system detects solid lane markings
The warning vibration occurs later if:
R the road has narrow lanes
R you cut the corner on a bend Active Driving Assistance package
General notes The Active Driving Assistance package consists
of DISTRONIC PLUS (Y page 207), Active Blind
Spot Assist (Y page 247)and Active Lane Keep-
ing Assist (Y page 250).
Active Blind Spot Assist General notes
Active Blind Spot Assist monitors the areas on
either side of the vehicle that are not directly
visible to the driver with two lateral, rear-facing radar sensors. A warning lamp lights up in the
exterior mirrors and draws your attention to
vehicles detected in the monitored area. If you
then switch on the corresponding turn signal to
change lanes, you will also receive a visual and
audible collision warning. If a risk of side impact is detected, corrective braking may help you
avoid a collision. Active Blind Spot Assist eval-
uates the free space in the direction of travel
and to the side before making a course-correct-
ing brake application. For this, Active Blind Spot
Assist uses the forward-facing radar sensors.
Active Blind Spot Assist supports you from a
speed of approximately 30 km/h.
Important safety notesActive Blind Spot Assist is only an aid and is not
a substitute for attentive driving. G
WARNING
Active Blind Spot Assist does not react to
vehicles:
R overtaking too closely on the side, placing
them in the blind spot area
R if the difference in the speed of approach
and overtaking is too great Driving systems
247Driving and parking
Z
As a result, Active Blind Spot Assist may nei-
ther give warnings nor intervene in such sit-
uations. There is a risk of an accident.
Always pay careful attention to the traffic sit- uation and maintain a safe distance at the sideof the vehicle.
Radar sensors The Active Blind Spot Assist radar sensors are
integrated into the front and rear bumpers and
behind a cover in the radiator trim. Make sure
that the bumpers and the cover in the radiator
trim are free of dirt, ice or slush. The sensors
must not be covered, for example by cycle racks or overhanging loads. Following an accident or
in the event of damage to the bumpers, have the
function of the radar sensors checked at a quali-
fied specialist workshop. Active Blind Spot
Assist may otherwise no longer function prop-
erly.
Monitoring range G
WARNING
Active Blind Spot Assist does not detect all
traffic situations and road users. There is a
risk of an accident.
Always make sure that there is sufficient dis-
tance to the side for other traffic or obstacles. Active Blind Spot Assist monitors the area up to
3.0 m behi nd your vehicle and directly next to
your vehicle, as shown in the diagram. In particular, the detection of obstacles can be
impaired in the case of:
R dirt on the sensors or obscured sensors
R poor visibility, e.g. due to rain, snow or spray
Vehicles in the monitoring range are then not
reliably indicated.
Active Blind Spot Assist may not detect narrow
vehicles, such as motorcycles or bicycles, or
may only detect them too late.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may be indicated, especially if the vehicles are not driv-
ing in the middle of their lane. This may be the
case if there are vehicles at the edge of their
lane.
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 particularly long vehicles, for exam-
ple lorries, for a prolonged time
Indicator and warning display :
Yellow indicator lamp/red warning lamp
Active Blind Spot Assist is not operational at
speeds below approximately 30 km/h. Vehicles
in the monitoring range are then not indicated.
If Active Blind Spot Assist is switched on, indi-
cator lamp :in the exterior mirrors lights up
yellow up to a speed of 30 km/h. At speeds
above 30 km/h, the indicator lamp goes out and Active Blind Spot Assist is operational.
If a vehicle is detected within the monitoring
range at speeds above 30 km/h, warning
lamp :on the corresponding side lights up red.
This warning lamp always lights up when a vehi- cle enters the blind spot monitoring range frombehind or from the side. When you overtake a 248
Driving systemsDriving an
d parking
Important safety notes
G
WARNING
If the speed driven and the set speed deviate and you activate DSR on a slippery road sur-
face, the wheels may lose traction. This
increases the risk of skidding and having an
accident.
Before switching DSR on, please take into
consideration the road surface and the differ-
ence between driving speed and the set
speed.
If you fail to adapt your driving style, DSR can
neither reduce the risk of accident nor override the laws of physics. DSR cannot take account ofroad, weather and traffic conditions. DSR is only
an aid. You are responsible for the distance to
the vehicle in front, for vehicle speed, for brak-
ing in good time and for staying in lane.
You are always responsible for keeping control
of the vehicle and for assessing whether the
downhill gradient can be managed. DSR may not
always be able to keep to the set speed, depend-
ing on road surface and tyre conditions. Select a set speed suitable for the prevailing conditions
and when necessary, apply the brakes manually.
Activating DSR X
Press button :.
Indicator lamp ;lights up.
The à DSR symbol appears in the multi-
function display.
You can only activate DSR when driving at
speeds below 40 km/h.
If the current vehicle speed is too high, the Ã
DSR symbol appears in the multifunction display
with the Max. speed 40 km/h
Max. speed 40 km/h message.
If you have activated DSR and then change drive programs, DSR is deactivated. If you switch between the offroad and offroad plus drive pro-
grams, DSR remains activated.
Deactivating DSR
X Press button :.
Indicator lamp ;goes out.
The à DSR symbol appears in the multi-
function display with the off offmessage.
DSR switches off automatically if you drive
faster than 45 km/h. The ÃDSR symbol
appears in the multifunction display with the
off off message. The status indicator in the multi-
function display goes out. You also hear a warn-
ing tone.
On vehicles with the Offroad Engineering pack-
age, if you select a different drive program, DSR is also deactivated. If you switch between the
offroad programs, DSR remains activated.
Changing the set speed X
To increase or reduce the set speed in
1 km/h increments:
briefly press the cruise
control lever up :for a higher set speed or
down ;for a lower set speed.
The set speed appears in the multifunction
display with the ÃDSR symbol.
When DSR is activated, you can change the set
speed to a value between 2 km/h and 18 km/h.
i The DSR set speed is always changed in
1 km/h increments. This is regardless of
whether you press the cruise control lever to or beyond the pressure point. Driving systems
253Driving and parking Z
"Offroad" Max. speed 100 km/h
"Offroad" Max. speed 100 km/h
message
appears in the multifunction display. If you drive
at speeds of more than 100 km/h and select the
Offroad drive program, the Please reduce
Please reduce
speed
speed message appears in the multifunction
display. The last active drive program is selected again.
Selecting the Offroad drive program
X To select a drive program: turn DYNAMIC
SELECT controller :until indicator lamp ;
lights up.
The Drive program "Offroad" Max.
Drive program "Offroad" Max.
speed 100 km/h speed 100 km/h message appears in the
multifunction display.
The vehicle is raised by 30 mm.
The vehicle changes from the Offroaddrive pro-
gram to the Comfortdrive program if you drive
faster than 110 km/h.
The Please
Please reduce reducespeed
speedmessage appears in
the multifunction display.
Offroad Plus drive program :
DYNAMIC SELECT controller
; Offroad Plus drive program indicator lamp
Select the Offroad Plus drive program for rough
terrain, e.g. for steep and/or uneven terrain or
for driving on rocky terrain.
Your vehicle has an automatically activated dif-
ferential lock for the transfer case. It controls
the balance between the front and rear axles.
The differential lock improves the vehicle's trac-
tion. 4ETS (Y page 76) controls the balance
between both wheels on an axle. Selecting the Offroad Plus drive program
X To select a drive program: turn DYNAMIC
SELECT controller :until indicator lamp ;
lights up.
The Drive program "Offroad Plus"
Drive program "Offroad Plus"
Max. speed 40 km/h Max. speed 40 km/h message appears in
the multifunction display.
R The Offroad Plus drive program is selected
and the vehicle is raised by 30 mm com-
pared with the Offroaddrive program.
R DSR is switched on.
R The differential lock is closed.
You can select the Offroad Plus drive program at speeds below 40 km/h.
The Offroad Plus drive program automatically
switches to the Offroad drive program if you
drive faster than 45 km/h. The Please Pleasereduce
reduce
speed
speed message appears in the multifunction
display.
Further information about "Driving off-road"
(Y page 199).
LOW RANGE offroad gear (vehicles with
the Offroad Engineering package) Important safety notes
G
WARNING
If you select the LOW RANGE off-road gear on a slippery road surface, the wheels could lose traction:
R if you release the accelerator pedal when
the vehicle is in motion
R if Off-road ABS intervenes when braking
If the wheels lose traction, it will no longer be
possible to steer the vehicle. This increases
the risk of skidding and having an accident.
Never select the LOW RANGE off-road gear
when driving on slippery road surfaces. G
WARNING
If you do not wait for the transfer case gear
change process to complete, the transfer
case could remain in the neutral position. The power transmission to the driven wheels is
then interrupted. There is a danger of the
vehicle rolling away unintentionally. There is a
risk of an accident. Driving systems
255Driving and parking
Z
X
Press the :or9 button to select the
Automatic door locks
Automatic door locks function.
When the Automatic
Automatic door
doorlocks
locks function is
activated, the vehicle doors are displayed in
orange in the multifunction display.
X Press the abutton to save the setting.
For further information on the automatic locking
feature; see (Y page 92).
Activating/deactivating the acoustic
locking confirmation
If you switch on the Acoustic
Acoustic Lock Lockfunction, an
acoustic signal sounds when you lock the vehi-
cle.
X Press the =or; button on the steering
wheel to select the Settings
Settings menu.
X Press the :or9 button to select the
Vehicle
Vehicle submenu.
X Press ato confirm.
X Press the :or9 button to select the
Acoustic Lock Acoustic Lock function.
If the Acoustic Lock
Acoustic Lock function is activated,
the & symbol in the multifunction display
lights up orange.
X Press the abutton to save the setting.
Heating submenu Auxiliary heating departure time
G
DANGER
If the exhaust pipe is blocked or sufficient
ventilation is not possible, toxic exhaust
fumes can enter the vehicle, especially car-
bon monoxide. This is the case, e.g. in
enclosed spaces, or if the vehicle is stuck in
snow. There is a risk of fatal injuries.
You should switch off the auxiliary heating in
enclosed spaces which do not have an extrac- tion system, e.g. a garage. If the vehicle is
stuck in snow and you must leave the auxiliary
heating running, keep the exhaust pipe and
the area around the vehicle clear of snow. To guarantee a sufficient supply of fresh air, open
a window on the side of the vehicle away from the wind. G
WARNING
When the auxiliary heating is switched on,
parts of the vehicle can become very hot.
Flammable materials such as leaves, grass or twigs may ignite if they come into contact
with:
R hot parts of the exhaust system
R the exhaust gas itself
There is a risk of fire.
When the auxiliary heating is switched on,
make sure that:
R no flammable materials come into contact
with hot vehicle components
R the exhaust gas can escape from the
exhaust pipe unhindered
R the exhaust gas does not come into contact
with flammable materials.
! Operating the auxiliary heating/ventilation
draws on the vehicle battery. After you have
heated or ventilated the vehicle a maximum of two times, drive for a longer distance.
Only vehicles with auxiliary heating have this
function.
In the Heating Heating submenu, you can select a
stored departure time or change a departure
time.
The auxiliary heating timer function calculates
the switch-on time according to the outside
temperature so that the vehicle is preheated by the departure time. When the departure time isreached, the auxiliary heating continues to heat
for a further five minutes and then switches off. The auxiliary heating adopts the THERMATIC orTHERMOTRONIC temperature setting.
You can switch off the auxiliary heating by using
the remote control or the auxiliary heating but-
ton on the centre console.
i Switch the auxiliary heating on regularly
once a month for about ten minutes.
Further information on auxiliary heating
(Y page 149). Menus and submenus
295On-board computer and displays Z
Selecting the departure time or deactivat-
ing a selected departure time
X Press the =or; button on the steering
wheel to select the Settings
Settingsmenu.
X Press the :or9 button to select the
Heating
Heating submenu.
X Press ato confirm.
You will see the selected setting.
X Press ato confirm.
X Press the :or9 button to select one
of the three departure times or Timer
Timer off
off(no
timer active).
X Press ato confirm.
If a departure time is selected, the yellow
indicator lamp lights up on the auxiliary heat- ing button.
Changing the departure time
X Press the =or; button on the steering
wheel to select the Settings
Settings menu.
X Press the :or9 button to select the
Heating Heating submenu.
X Press ato confirm.
You will see the selected setting.
X Press the :or9 button to select A
A,B
B
or Change C
Change C.
X Press ato 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 yellow indicator lamp on the auxiliary
heating button lights up.
Convenience submenu Activating/deactivating the EASY-
ENTRY/EXIT feature G
WARNING
When the EASY-ENTRY/EXIT feature adjusts
the steering wheel, you and other vehicle
occupants – particularly children – could
become trapped. There is a risk of injury.
While the EASY-ENTRY/EXIT feature is mak-
ing adjustments, make sure that no one has
any body parts in the sweep of the steering
wheel. If someone is trapped:
R press one of the memory function position
buttons, or
R move the switch for steering wheel adjust-
ment in the opposite direction to that in
which the steering wheel is moving.
The adjustment process is stopped.
X Press the =or; button on the steering
wheel to select the Settings Settingsmenu.
X Press the :or9 button to select the
Convenience
Convenience submenu.
X Press ato confirm.
X Using :or9, select the Easy
EasyEntry/
Entry/
Exit
Exit function.
If the Easy
Easy Entry/Exit
Entry/Exit function is activated,
the vehicle steering wheel is displayed in
orange in the multifunction display.
X Press the abutton to save the setting.
Further information on the EASY-ENTRY/EXIT
feature (Y page 116).
Switching belt adjustment on/off
X Press the =or; button on the steering
wheel to select the Settings Settingsmenu.
X Press the :or9 button to select the
Convenience
Convenience submenu.
X Press ato confirm.
X Press the :or9 button to select the
Belt adjustment
Belt adjustment function.
If the Belt
Belt adjustment
adjustment function is activated,
the vehicle seat belt is shown in orange in the multifunction display.
X Press the abutton to save the setting.
For further information on belt adjustment, see
(Y page 47).
Switching the fold mirrors in when lock-
ing function on/off This function is only available when the vehicle is
equipped with the electrical fold-in function.
When you activate the Auto. fold-in mir‐
Auto. fold-in mir‐
rors rors function, the exterior mirrors are folded in
when the vehicle is locked. The exterior mirrors fold out automatically again as soon as you
unlock the vehicle. 296
Menus and submenusOn-board computer and displays
Safety systems
Display messages
Possible causes/consequences and
M
MSolutions !÷
currently unavaila‐
currently unavaila‐
ble ble See
SeeOwner's
Owner's Man‐
Man‐
ual
ual ABS (Anti-lock Brake System), BAS (Brake Assist), ESP
®
(Electronic
Stability Program), ESP ®
trailer stabilisation, PRE ‑SAFE®
, the HOLD
function, hill start assist, Crosswind Assist, STEER CONTROL, Active
Lane Keeping Assist and Active Blind Spot Assist are temporarily
unavailable.
Adaptive brake lights, COLLISION PREVENTION ASSIST PLUS, BAS
PLUS with Cross-Traffic Assist, PRE‑SAFE ®
PLUS and PRE‑SAFE ®
Brake may also have failed.
In addition, the ÷,åand! warning lamps light up in the
instrument cluster.
ATTENTION ASSIST is deactivated.
Possible causes:
R self-diagnosis is not yet complete
R the on-board voltage may be insufficient
G WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you brake
hard, for example.
The steerability and braking characteristics may be severely affected. The braking distance may increase in an emergency braking situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Carefully drive on a suitable stretch of road, making slight steering
movements at a speed above 20 km/h.
If the display message disappears, the functions mentioned above
are available again.
If the multifunction display still shows the display message: X Drive on carefully.
X Consult a qualified specialist workshop immediately. !÷
inoperative inoperative See
See Own‐
Own‐
er's Manual
er's Manual ABS, BAS, ESP
®
, ESP ®
trailer stabilisation, PRE ‑SAFE®
, the HOLD
function, hill start assist, Crosswind Assist, STEER CONTROL, Active
Lane Keeping Assist and Active Blind Spot Assist are unavailable due to a malfunction.
Adaptive brake lights, COLLISION PREVENTION ASSIST PLUS, BAS
PLUS with Cross-Traffic Assist, PRE‑SAFE ®
PLUS and PRE‑SAFE ®
Brake may also have failed.
In addition, the J,÷,åand! warning lamps light up in
the instrument cluster.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you brake
hard, for example. Display messages
301On-board computer and displays Z