24Keys, doors and windowsDepending on the version, the
electronic key system enables a
keyless operation of the following
functions:
● central locking system 3 25
● tailgate unlocking
● ignition switching on and starting the engine 3 147
● 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 22.
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 25.
36Keys, doors and windowsload compartment is self-
activated 45 seconds after
locking the vehicle by pressing e.
● Electronic key system: Monitoring of doors, tailgate and
bonnet is self-activated
5 seconds after locking the
vehicle by pressing with a finger
or thumb on one of the front door
handles at the markings.
Monitoring of passenger
compartment including adjoining
load compartment is self-
activated 45 seconds after
locking the vehicle by pressing with a finger or thumb on one of
the front door handles at the
markings.
Activation is confirmed by the flashing of the status LED and coming on of
the turn lights for a short time.
If a door or the tailgate is not correctly
closed and the vehicle is locked via
remote control or electronic key
system, the vehicle remains
unlocked. However, the anti-theft
alarm system will be activated after
45 seconds.Note
Changes to the vehicle interior such as the use of seat covers and open
windows, could impair the function
of passenger compartment
monitoring.
Activation without monitoring of
passenger compartment
Switch off the monitoring of
passenger compartment when
animals are being left in the vehicle,
because of high volume ultrasonic
signals or movements triggering the
alarm. Also switch off when the
vehicle is on a ferry or train.
1. Switch of ignition.
2. Press U within the next 10
seconds until the LED of the
button illuminates constantly.
3. Get out of the vehicle.
4. Lock the vehicle immediately by using the remote control, pressing
with a finger or thumb on one of
the door handles (at the markings) or pressing the tailgate button.
Activation is indicated by the flashing
of the status LED.
Indication
LED in the central locking button
flashes if the anti-theft alarm system
is activated.
Seek the assistance of a workshop in
the event of faults.
Deactivation
Radio remote control: Unlocking the
vehicle by pressing c deactivates the
anti-theft alarm system.
Instruments and controls93Pull lever. Washer fluid is sprayed
onto the windscreen and the wiper
wipes a few times.
Washer fluid 3 215.
Rear window wiper and washer
Rear window wiper
Turn outer cap to activate the rear
window wiper:
OFF: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 3 119.
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.
94Instruments and controls9Warning
The road surface may already be
icy even though the display
indicates a few degrees above
0 °C.
Clock
Date and time are shown in the InfoDisplay.
Info Display 3 114.
Graphic Info Display
Press MENU to open the menu page.
Press f or g to select
Personalisation-configuration .
Confirm with OK.
Press R or S to select Display
configuration . Confirm with OK.
Press R or S to select Date and time
adjustment . Confirm with OK.
Press f or g to select the value of
the desired setting, e.g., Day. Confirm
with OK.
Set successively the respective
values for date and time: Press R or
S to set the desired value. Confirm
with OK.
To confirm the set date and time,
press f or g to select OK on the
display. Confirm with OK.
8'' Colour Info Display
Press : and then select the
OPTIONS .
Select Setting the time-date .
To change the time and date formats, select the respective tabs and then
select the desired formats.
By default the displayed time and
date are automatically adjusted by
the system.
To manually adjust the displayed time
and date:
Select the Time tab.
Set Synchronization with GPS (UTC)
to Off and then select the Time field
to set the desired time.
Select the Date tab and then select
the Date: field to set the desired date.
Instruments and controls103Service displayThe 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 3 250.
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
3000 km or more no service
information appears in the display.
If service is required within the next
3000 km, the remaining distance or
time duration is indicated for several
seconds. Simultaneously symbol <
lights up permanently as reminder.
If service is required in less than 1000
km, < 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 overdued
distance. < 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 M or
CHECK
● switch on ignition, the distance indication begins a countdown
● when the display indicates =0,
release the button
< disappearsRetrieving service information
To retrieve the status of the service
information at any time press button
M . The service information is
displayed for a few seconds.
118Instruments and controlsVehicle messagesMessages are indicated in the Driver
Information Centre, in some cases
together with a warning chime.
Press SET / CLR to confirm a
message.
Vehicle and service messages The vehicle messages are displayed
as text. Follow the instructions given
in the messages.
Messages in the
Colour Info Display
Some important messages may
appear additionally in the
Info Display. Some messages only
pop-up for a few seconds.
Warning chimes
If several warnings appear at the same time, only one warning chime
will sound.
When starting the engine or whilst driving
The warning chime regarding not
fastened seat belts has priority over
any other warning chime.
● If a seat belt is not fastened.
● If a door or the tailgate is not fully
closed.
● If a certain speed is exceeded with parking brake applied.
● If cruise control deactivates automatically.
● If a programmed speed or speed
limit is exceeded.● If a warning message appears in the Driver Information Centre.
● If the electronic key is not in the passenger compartment.
● If the parking assist detects an object.
● If an unintended lane change occurs.
● If the exhaust filter has reached the maximum filling level.
When the vehicle is parked and / or the driver's door is opened
● With exterior lights on.
During an Autostop ● If the driver's door is opened.● If any condition for a restart of the
engine is not fulfilled.
Battery voltage When the vehicle battery voltage isrunning low, a warning message will
appear in the Driver Information
Centre.
178Driving and operating● The electric parking brake isapplied.
● 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 mountain
roads, 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.
● The adaptive cruise control considers 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
Driving and operating179longer 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.
Hill considerations9 Warning
Do not use the adaptive cruise
control on steep hill roads.
System performance on hills depends
on vehicle speed, vehicle load, traffic
conditions and the road gradient. It
may not detect a vehicle in your path
while driving on hills. On steep hills,
you may have to use the accelerator
pedal to maintain your vehicle speed.
When going downhill you may have to brake to maintain or reduce your
speed.
Note that applying the brake
deactivates the system.