Page 35 of 217

Keys, doors and windows33
Press the m button: the doors are
locked or unlocked.
The LED in the button m illuminates
for approx. 2 minutes after locking
with the radio remote control.
If the doors are locked from the inside
whilst driving, the LED remains lit.
Fault in remote control or
electronic key
Unlocking
Turn key or emergency key 3 28 in
the driver's door lock as far as it will go. The entire vehicle is unlocked
when the driver's door is opened.
Locking
Close the driver's door, open the
passenger door, press central locking
button m. The vehicle is locked.
Close the passenger door.
Fault in central locking system
Unlocking
Turn key or emergency key 3 28 in
the driver's door lock as far as it will
go. The other doors can be opened by using the interior handle (not possibleif the anti-theft locking system is
active). The load compartment and
fuel filler flap remain locked. To
deactivate the anti-theft locking
system, switch on the ignition 3 35.Locking
Insert key or emergency key 3 28 into
opening above lock on inside of door
and operate lock by pressing until it
clicks. Then close the door. The
procedure must be carried out for
each door. The driver's door can also
be locked from the outside with the
key. The fuel filler flap and tailgate
cannot be locked.
Page 37 of 217
Keys, doors and windows35Vehicle security
Anti-theft locking system9 Warning
Do not use the system if there are
people in the vehicle! The doorscannot be unlocked from the
inside.
The system deadlocks all the doors.
All doors must be closed or the
system cannot be activated.
If the ignition was on, the driver's door
must be opened and closed once so
that the vehicle can be secured.
Unlocking the vehicle disables the
mechanical anti-theft locking system.
This is not possible with the central
locking button.
Activating with the radio remote
control
Press p twice within 15 seconds.
Activating with the electronic
key
Touch the sensor field in the front
door handle twice within 15 seconds.
The electronic key must be outside the vehicle, within a range of approx.1 metre.
Anti-theft alarm system The anti-theft alarm system is
operated in conjunction with the
central locking system.
Page 38 of 217

36Keys, doors and windows
It monitors:■ Doors, load compartment, bonnet,
■ Passenger compartment,
■ Vehicle inclination, e.g. if it is raised,
■ Ignition.
Activation
The system is activated by pressing
p on the radio remote control or by
touching the sensor field in the front
door handle.
Notice
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 and
vehicle inclination
Switch off the monitoring of
passenger compartment and vehicle
inclination, when animals are being
left in the vehicle, because of high
volume ultrasonic signals or
movements triggering the alarm. Switch off as well, when the vehicle is
on a ferry or train.
1. Close load compartment, bonnet and windows.
2. Press button b. The LED in button
m flashes for a maximum of
10 seconds
3. Close doors.
4. Activate the anti-theft alarm system. The LED illuminates.
After approx. 10 seconds, the
system is armed. The LED flashes until the system is deactivated.
Light-emitting diode (LED)
Page 39 of 217

Keys, doors and windows37
During the first 10 seconds of anti-
theft alarm system activation:LED illu‐
minates=Test, ignition delay,LED
flashes
quickly=Door, load
compartment or bonnet open, or system fault.
After the first 10 seconds of anti-theft
alarm system activation:
LED flashes
slowly=System active,LED comes on for
approx. 1 second=Switch off
function.
Seek the assistance of a workshop in
the event of faults.
Deactivation
Unlocking the vehicle deactivates the
anti-theft alarm system.
Alarm
When triggered, the alarm gives off
an acoustic signal (horn) and a visual signal (hazard warning flashers). The
number and duration of which are
stipulated by legislation.
The alarm siren can be silenced by
pressing a button of the radio remote
control or by switching on the ignition.
The anti-theft alarm system can be
deactivated only by pressing button
p or by switching on the ignition.
If the vehicle's battery is to be
disconnected (e.g. for maintenance
work), the alarm siren must be
deactivated as follows: switch the
ignition on then off, then disconnect
the vehicle's battery within
15 seconds.
Immobiliser
The system checks whether the
vehicle is allowed to start with the key being used. If the transponder in the
key is recognised, the engine can be
started.
The immobiliser is going to be
activated automatically after the key
has been removed from the ignition
switch or when the engine is switched
off by pressing the Start/Stop button.
Control indicator A 3 88.Notice
The immobiliser does not lock the
doors. You should always lock the
vehicle after leaving it and switch on the anti-theft alarm system 3 31,
3 35.
Page 43 of 217
Keys, doors and windows41
Operate the control to open or close
the window.
For vehicles with automatic feature
pull or press the switch again to stop
window movement.
Safety function
If the window glass encounters
resistance above the middle of the window during automatic closing, it is
immediately stopped and the window opened again.
In the event of closing difficulties due
to frost or the like, operate the switch
several times to close the window in
stages.Child safety system for rear
windows
Switch z can be used to activate or
deactivate the switches in the rear
doors.
Operating windows from outside
The windows can be operated
remotely from outside the vehicle.
Radio remote control
Press q or p until all windows have
opened or closed.
Page 102 of 217

100Instruments and controlsVehicle messagesMessages are given via the
instrument panel display or as
warning and signal buzzers. Check
control messages appear on the
Info-Display. Some appear in an
abbreviated form. Confirm warning
messages with the multifunction knob
3 93, 3 96.
Warning chimes
When starting the engine or
whilst driving ■ If the electronic key is not present or is not recognised.
■ If seat belt is not fastened.
■ If a door or the tailgate is not fully closed when starting off.
■ If a certain speed is exceeded with the parking brake applied.■ If the speed programmed at thefactory is exceeded.
■ If the vehicle has automated manual transmission and the
driver's door is opened when the
engine is running, a gear is
engaged and the foot brake is not
depressed.
When the vehicle is parked and the driver's door is opened ■ When the key is in the ignition switch.
■ With exterior lights on.
■ With Open&Start system and automatic transmission, if the
selector lever is not in P.
■ For automated manual transmission, if the parking brake isnot applied and no gear is engaged
when the engine is switched off.Battery voltage
Low battery voltage in radio remote
control or electronic key. On vehicles
without check control, the message
InSP3 appears in the instrument
panel display. Replace the battery
3 27, 3 28.
Brake light switch Brake light does not come on duringbraking. Have the cause of the fault
remedied immediately by a
workshop.
Page 177 of 217

Vehicle care175
Otherwise, the tyre pressure will be
monitored by the deflation detection
system 3 175.
Notice
In countries where the tyre pressure
monitoring system is legally
required, the use of wheels without
pressure sensors will invalidate the
vehicle type approval.
The current tyre pressures can be
shown in the Info-Display 3 106.
Vehicle messages, tyre pressure
3 101.
Control indicator w 3 90.
If a complete set of wheels without
sensors is mounted (e.g. four winter
tyres), no error message will be
displayed. The tyre pressure
monitoring system is not operational.
Retrofitting of sensors is possible.
The use of commercially available
liquid tyre repair kits can impair the
function of the system. Factory-
approved repair kits can be used.
External high-power radio equipment
could disrupt the tyre pressure
monitoring system.System initialisation
After a wheel change, the system
must be initialised: inflate the tyres to
the prescribed pressure, switch on
the ignition, then press and hold the
DDS button for approx. 4 seconds;
control indicator w flashes three
times.
Tyre deflation detection
system
The tyre deflation detection system
continually checks the rotation speed
of all four tyres.
If a tyre loses pressure the control
indicator w illuminates red. Stop
immediately and check tyre pressure.
Control indicator w 3 90.
System initialisation
After tyre pressure correction or
wheel change, the system must be
initialised: Switch on the ignition,
press and hold the DDS button for
approx. 4 seconds, control indicator
w flashes three times.
Page 210 of 217

208Customer informationCustomer informationCustomer information................208
Vehicle data recording and pri‐ vacy ........................................... 208Customer information
Declaration of conformity
This vehicle has systems that
transmit and/or receive radio waves
subject to Directive 1999/5/EC.
These systems are in compliance with the essential requirements and
other relevant provisions of Directive
1999/5/EC. Copies of the original
Declarations of Conformity can be
obtained on our website.Vehicle data recording
and privacy
Event data recordersData storage modules in thevehicle
A large number of electronic
components of your vehicle contain
data storage modules temporarily or
permanently storing technical data
about the condition of the vehicle,
events and errors. In general, this
technical information documents the
condition of parts, modules, systems
or the environment:
■ Operating conditions of system components (e.g. filling levels)
■ Status messages of the vehicle and
its single components (e.g. number
of wheel revolutions / rotational
speed, deceleration, lateral
acceleration)
■ Dysfunctions and defects in important system components