Keys, doors and windows23Depending on the version, the
electronic key system enables a
keyless operation of the following functions:
● central locking system 3 24
● tailgate unlocking
● ignition switching on and starting the engine 3 145
● headlight activation
The electronic key simply needs to be
on the driver's person.
Additionally, the electronic key
includes the functionality of the radio
remote control 3 21.
Handle with care, protect from
moisture and high temperatures and
avoid unnecessary operation.
Replacing battery in electronic
key
Replace the battery as soon as the
system no longer operates properly
or the range is reduced.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
1. Remove the cover.
2. Extract the flat battery from its location.
3. Replace battery with a battery ofthe same type. Pay attention to
the installation position.
4. Clip the cover in place.
Fault
If the central locking cannot be
operated or the engine cannot be
started, the cause may be one of the
following:
● Fault in electronic key.
● Electronic key is out of reception range.
● The battery voltage is too low. ● Overload of the central locking system by operating at frequent
intervals, the power supply is
interrupted for a short time.
● Interference from higher-power radio waves from other sources.
To rectify the cause of the fault,
change the position of the electronic
key.
Manual unlocking 3 24.
92Instruments and controlsRear window wiper andwasher
Rear window wiperOFF:offINT:intermittent operation
Do not use if the rear window is
frozen.
Switch off in car washes.
The rear window wiper comes on
automatically when the windscreen
wiper is switched on and reverse gear
is engaged.
Activation or deactivation of this
function can be changed in the
Vehicle personalisation menu 3 115.
Rear window washer
Push lever.
Washer fluid is sprayed onto the rear
window and the wiper wipes a few
times.
The rear window washer system is
deactivated when the fluid level is
low.
Washer fluid 3 215.
Outside temperature
A drop in temperature is indicated
immediately and a rise in temperature
after a time delay.
Illustration shows an example.
If outside temperature drops to 3 °C,
a warning message is displayed in the Driver Information Centre.
9 Warning
The road surface may already be
icy even though the display
indicates a few degrees above 0
°C.
Instruments and controls99Caution
If engine coolant temperature is
too high, stop vehicle, switch off
engine. Danger to engine. Check
coolant level.
Engine oil level monitor
The state of the engine oil level is
displayed in the Driver Information
Centre for a few seconds following
the service information after switching
on the ignition.
A proper state of engine oil level is
indicated by the message Oil level
correct .
If engine oil level is low, I flashes
and Oil level incorrect is indicated,
accompanied by C. Confirm
engine oil level by using the oil
dipstick and top up engine oil
respectively.
Engine oil 3 213.
A fault of measurement is indicated
by the message Oil level
measurement invalid . Check engine
oil level manually by using the
dipstick.
Service display
The service system informs when to
change the engine oil and filter or a
vehicle service is required. Based on
driving conditions, the interval at
which an engine oil and filter change
is required can vary considerably.
Service information 3 251.
A required service due is displayed in the Driver Information Centre for
seven seconds after switching on the
ignition.
If no service is required for the next
1800 miles or more no service
information appears in the display.
If service is required within the next
1800 miles, the remaining distance or
time duration is indicated for several
seconds. Simultaneously C lights
up permanently as reminder.
If service is required in less than
600 miles, C flashes and then
lights up permanently. Remaining
distance or time duration is indicated
for several seconds.
Overdued service is indicated by a
message in the Driver Information
Centre which indicates the overdueddistance. C flashes and then lights
up permanently until service is
executed.
Reset of service interval After each service, the service
indicator must be reset to ensure
proper functionality. It is
recommended to seek the assistance
of a workshop.
If service is executed by yourself,
operate as following:
● switch off ignition
● press and hold button CHECK
● switch on ignition, the distance indication begins a countdown
● when the display indicates =0,
release the button
C disappears
116Instruments and controls●Comfort
Ambient lighting : Adjusts the
brightness of the ambient
lighting.
Rear wiper in reverse gear :
Activates or deactivates
automatic switching on of the
rear window wiper when reverse
gear is engaged.
● Vehicle
Unlocking boot only : Activation /
deactivation.
Plip action : Driver / all doors.
● Security
Fatigue Detection system :
Activates or deactivates the
driver drowsiness system.
● Driving assistance
Speed recommendation :
Activates or deactivates the
function.Colour Info Display Multimedia
Press : to open settings menu.
Use touch buttons to operate the
display.
Unit settings
Select System configuration .
Change units for Distance and fuel
consumption and Temperature .
Language settings
Select Language .
Change language by touching the
respective entry.
Driving function
Press Í.
Select Driving function .
In the corresponding submenus the
following settings can be changed:
● Park Assist : Activates advanced
park assist, a parking maneuver
can be selected.
● Parking sensors : Activates or
deactivates the parking sensors.
● Blind spot sensors : Activates or
deactivates side blind spot alert.
● Under-inflation initialization :
Initialises the tyre under-inflation
detection system.
● Diagnostic : Shows alert
messages of the diagnostic
system.
Instruments and controls117Vehicle settings
Press Í.
Select Vehicle settings .
In the corresponding submenus the
following settings can be changed:
● Parking
Prevention of door mirror folding :
Activates or deactivates the
automatic folding of the exterior
mirrors.
Rear wiper in reverse : Activates
or deactivates automatic
switching on of the rear window
wiper when reverse gear is
engaged.
● Headlights
Guide-me-home lighting :
Activates or deactivates the
function and adjusts its duration.
Welcome lighting : Activates or
deactivates the function and
adjusts its duration.
Directional headlamps : Activates
or deactivates the cornering
lights.
● Comfort
Mood lighting : Adjusts the
brightness of the ambient
lighting.
● Safety
Speed reading/recommendation :
Activates or deactivates the
speed limit information by traffic sign recognition.
Active safety brake : Activates or
deactivates active emergency
braking, the alert distance for risk of collision can be selected.
Mirror adaptation in reverse :
Adjusts the exterior mirrors if
reverse gear is engaged to
facilitate sidewalks visibility.Driver's attention warning :
Activates or deactivates the
driver drowsiness system.
Colour Info Display
Multimedia Navi Pro
Press : to open settings menu.
Use touch buttons to operate the
display.
Unit settings
Select System settings .
Change units for Distance and fuel
consumption and Temperature .
Confirm with G.
Driving and operating175If the stopped vehicle ahead was
stopped for a longer time and then
begins to move forward, the green
illuminated vehicle ahead control
indicator . will flash and a warning
chime will sound as a reminder to check traffic before resuming.
When the vehicle ahead drives away,
press the accelerator pedal until
19 mph and then move the thumb
wheel to SET- or RES+ to resume
adaptive cruise control. If the vehicle
stays stopped for more than five
minutes or if the driver's door is
opened and the driver's seat belt is
unfastened, then the electric parking
brake is applied automatically to hold
the vehicle. Control indicator m will
illuminate. To release electric parking
brake, press the accelerator pedal.
Electric parking brake 3 160.9 Warning
When the system is deactivated or
cancelled, the vehicle will no
longer be held at a stop and can
start moving. Be always prepared
to manually apply the brake to hold the vehicle stationary.
Do not leave the vehicle while it is
being held at a stop by adaptive
cruise control. Always move
selector lever to park position P
and switch off the ignition before
leaving the vehicle.
Setting the following distance
When adaptive cruise control detects
a slower moving vehicle in the driving path, it will adjust the vehicle speed tomaintain the following distance
selected by the driver.
The following distance can be set to
close (1 bar), normal (2 bars) or far
(3 bars).
If the engine is running and the
adaptive cruise control is enabled
(grey), you can modify the following
distance setting:
Press Ö, the current setting is shown
in the Driver Information Centre.
Press Ö again to change the following
distance: The new setting is
displayed in the Driver Information
Centre.
The selected following distance is
indicated by full bars in the adaptive
cruise control page.9 Warning
The driver accepts full
responsibility for the appropriate
following distance based on traffic, weather and visibility conditions.
Following distance must be
adjusted or the system switched
off when required by the prevailing
conditions.
Detecting the vehicle ahead
If the system detects a vehicle in the
driving path, the adaptive cruise
control symbol displayed in the Driver
Information Centre changes: - is
changed to w.
176Driving and operatingDeactivation of the functionality
Press Ñ, the adaptive cruise control
is in pause mode and a message is
displayed. The vehicle is driven
without adaptive cruise control.
The adaptive cruise control is
deactivated, but not disabled. The
last stored set speed remains in
memory for later usage.
The adaptive cruise control is
deactivated automatically when:
● The brake pedal is depressed.
● The vehicle accelerates above 112 mph or slows down below
19 mph.
● The electric parking brake is applied.
● The Traction Control system or Electronic Stability Control is
deactivated or operating.
● The selector lever of automatic transmissions is neither in D nor
in M.
● A fault is detected in the Electronic Stability Control.
Switching off the system
Press C, the adaptive cruise control
mode is disabled and the adaptive
cruise control indication extinguishes
in the Driver Information Centre.
Pressing ß to activate the speed
limiter deactivates adaptive cruise
control.
Switching off the ignition deletes the
stored set speed.
Driver's attention ● Use the adaptive cruise control carefully on bends or mountainroads, as it can lose the vehicle
ahead and needs time to detect it
again.● Do not use the system on slippery roads as it can create
rapid changes in tyre traction
(wheel spinning), so that you
could lose control of the vehicle.
● Do not use the system when the spare wheel is in use.
System limits9 Warning
The system's automatic brake
force does not permit hard braking and the braking level may not be
sufficient to avoid a collision.
● After a sudden lane change, the system needs a certain time to
detect the next preceding
vehicle. So if a new vehicle is
detected, the system may
accelerate instead of braking.
● The adaptive cruise control does ignore the oncoming traffic.
● The adaptive cruise control does not consider pedestrians and
animals for braking and driving
off.
Driving and operating177● The adaptive cruise controlconsiders stopped vehicles only
at low speed.
● Do not use the adaptive cruise control when towing a trailer.
● Do not use the adaptive cruise control on roads with an incline ofmore than 10%.
Bends
The adaptive cruise control calculates
a predicted path based on the
centrifugal force. This predicted path
considers the current bend
characteristic, but cannot consider a
future bend change. The system may lose the current vehicle ahead or
consider a vehicle which is not in the
actual lane. This can happen when
entering or exiting a bend or if the
bend gets stronger or weaker. If it no
longer detects any vehicle ahead,
then control indicator A will
extinguish.
If the centrifugal force is too high in a bend, the system slows down the vehicle slightly. This braking level is
not designed to avoid spinning-off the
bend. The driver is responsible for
reducing the selected speed before
entering a bend and in general to
adapt the speed to the road type and
to existing speed limits.
Motorways
On motorways, adapt the set speed
to the situation and the weather.
Always consider that adaptive cruise
control has a limited visibility range, a
limited braking level and a certain
reaction time to verify if a vehicle is on
the driving path or not. Adaptive
cruise control may not be able to
brake the vehicle in time to avoid a
collision with a much slower vehicle or after a lane change. This is
particularly true while driving fast or if the visibility is reduced due to weather
conditions.
While entering or exiting a motorway,
adaptive cruise control may lose the
vehicle ahead and accelerate up to
the set speed. For this reason,
decrease the set speed before the
exit or before the entry.
Vehicle path changes
If another vehicle enters your driving
path, adaptive cruise control will first
consider the vehicle when it is
completely in your path. Be ready to
take action and depress the brake
pedal, if you need to brake more
quickly.