20Keys, doors and windows
Used to operate:■ Central locking system
■ Anti-theft locking system
■ Anti-theft alarm system
■ Soft top
■ Power windows
The radio remote control has a range of approx. 20 metres. It can be
restricted by external influences. The
hazard warning flashers confirm
operation.
Handle with care, protect from
moisture and high temperatures and avoid unnecessary operation.
Fault If the central locking system cannot
be operated with the radio remote
control, it may be due to the following:
■ Range exceeded
■ Battery voltage too low
■ Frequent, repeated operation of the
radio remote control while not in range, which will require re-
synchronisation■ 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
Unlocking 3 21.
Basic settings Some settings can be changed in the menu Settings in the Info-Display.
Vehicle personalisation 3 102.
Radio remote control battery replacement
Replace the battery as soon as the
range reduces.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Key with foldaway key section
Extend the key and open the unit.
Replace the battery (battery type CR 2032), paying attention to the
installation position. Close the unit
and synchronise.
Radio remote controlsynchronisation
After replacing the battery, unlock the
door with the key in the driver's door
lock. The radio remote control is
synchronised when the ignition is
switched on.
Keys, doors and windows27
1. Close boot lid, bonnet, windowsand soft top.
2. Press button o. LED in the
button o illuminates for a
maximum of 10 minutes.
3. Close doors.
4. Activate the anti-theft alarm system.
To prevent false alarms passenger
compartment monitoring is
deactivated if the soft top is open. The
LED in the button o does not
illuminate.
If only the windows are open,
passenger compartment monitoring
operates restricted and the LED in the button o illuminates.
Status message is displayed in the
Driver Information Centre.Status LED
Status LED is integrated in the sensor
on top of the instrument panel.
Status during the first 30 seconds of
anti-theft alarm system activation:
LED illu‐
minates=test, arming delay.LED
flashes
quickly=doors, boot lid, soft top
or bonnet not
completely closed, or
system fault.
Status after system is armed:
LED flashes
slowly=system is armed.Seek the assistance of a workshop in
the event of faults.
Deactivation
Unlocking the vehicle by pressing c
deactivates the anti-theft alarm
system. Long press will activate soft
top opening.
Alarm When triggered, the alarm sounds via a separate battery-backed power
sounder, and the hazard warning
lights flash simultaneously. The
number and duration of alarm signals
are stipulated by legislation.
The alarm can be silenced by
pressing any button on the radio
remote control or by switching on the
ignition.
The anti-theft alarm system can be
deactivated only by pressing button
c or by switching on the ignition.
A triggered alarm, which has not been interrupted by the driver, will be
indicated by the hazard warning
lights. They will flash quickly three
times the next time the vehicle is
32Keys, doors and windows
Override safety function
In the event of closing difficulties due
to frost or the like, switch on the
ignition, then pull the switch to the first
detent and hold. The window moves
up with safety function disabled. To
stop movement, release the switch.
Comfort operating with the
remote control The windows and the soft top can be
operated remotely from outside the
vehicle.Opening
■ Press button c once briefly: the
doors are unlocked.
■ Press button c once more for two
seconds: the windows move down
automatically. Press button c
longer: the soft top will be opened.
Hold button pressed until soft top is
completely opened.
Release button during opening the
soft top: movement stops for
10 seconds; pressing button once
more continues opening.
Closing ■ Press button e once briefly: the
doors are locked.
■ Press button e once more longer:
the soft top and the windows will be
closed. Hold button pressed until
soft top is completely closed.
Release button during closing the
soft top: movement stops for10 seconds; pressing button once
more continues closing.
■ If the soft top is already closed but windows are opened: pressing
button e for two seconds will close
the windows.
Confirmation
Complete opening or closing of the
soft top is confirmed by the hazard
warning flashers.
OverloadIf the windows are repeatedly
operated within short intervals, the window operation is disabled for
some time.
Initialising the power windows
If the windows cannot be closed
automatically (e.g. after
disconnecting the vehicle battery), a
warning message is displayed in the
Driver Information Centre.
Vehicle messages 3 100.
36Keys, doors and windows
■ Load compartment partition isfolded out, pass-through flap isclosed 3 71.
■ Soft top lid is engaged in closed position.
■ Boot lid is completely closed.
■ Outside temperature is not lower than -7 °C for opening and -10 °C
for closing.
■ Vehicle battery voltage is sufficient.
■ The system is not overloaded by repeated operation (max. 5
complete cycles in succession).If any of these requirements are not fulfilled, a warning chime sounds
and a message appears in the
Driver Information Centre when the
switch is actuated and the soft top
will not open or close.
■ There must be no objects in front of
the rear window or in the pivot area of the soft top and the soft top lid.
If the automatic drive is not
operational when the soft top is open, execute a manual closing process,
see the following instructions in
"Manual closing in the event of a
system fault".
General hints
Note■ Always actuate the operation switch until the acoustic signal
sounds or the hazard warning
flashers illuminate, to ensure that
the soft top is completely opened
or closed.
■ The soft top can be held in an intermediate position to facilitate
cleaning of hood spaces and
gaskets. Release the switch in the
centre console during operation to
stop soft top movement in
intermediate position for a
maximum of 7 minutes when
ignition is on. After this time a warning chime sounds, the
hydraulic pressure in the system
decreases and the soft top can
start to move by itself.
■ Do not open the soft top if it is wet,
frozen or dirty.
■ Activating the soft top on uneven ground can lead to malfunctions
and damage.
■ Vehicle care 3 220.
82Instruments and controls
Adjust all settings.
Set date
To adjust the time settings, select the
Set Date menu item. Turn the
multifunction knob to adjust the first
setting.
Press the multifunction knob to
confirm the input. The coloured
background moves to the next
setting.
Adjust all settings.
Time format
To choose the desired time format,
select 12 hr / 24 hr Format . Activate
12 Hour or 24 Hour .
Vehicle personalisation 3 102.Power outlets
A 12 Volt power outlet is located in the
front console.
A further 12 Volt power outlet is
located in the rear console. Fold the
cover downwards.
Do not exceed the maximum power
consumption of 120 watts.
With ignition off, the power outlets are
deactivated. Additionally the power
outlets are deactivated in the event of
low vehicle battery voltage.
Electrical accessories that are
connected must comply with the
electromagnetic compatibility
requirements laid down in
DIN VDE 40 839.
Do not connect any current-delivering
accessories, e.g. electrical charging
devices or batteries.
Do not damage the outlet by using
unsuitable plugs.
Stop-start system 3 136.
Instruments and controls89
Illuminates for approx. 60 seconds
after the ignition is switched on. The
front passenger airbag is activated.
* illuminates yellow.
The front passenger airbag is
deactivated 3 61.9 Danger
Risk of fatal injury for a child using
a child restraint system together
with activated front passenger
airbag.
Risk of fatal injury for an adult
person with deactivated front
passenger airbag.
Charging system
p illuminates red.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
Illuminates when the engine is
running
Stop, switch off engine. Vehicle
battery is not charging. Engine
cooling may be interrupted. The
brake servo unit may cease to be
effective. Seek the assistance of a
workshop.
Malfunction indicator light
Z illuminates or flashes yellow.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
Illuminates when the engine isrunning
Fault in the emission control system. The permitted emission limits may be
exceeded. Seek the assistance of a
workshop immediately.Flashes when the engine is
running
Fault that could lead to catalytic
converter damage. Ease up on the
accelerator until the flashing stops.
Seek the assistance of a workshop
immediately.
Brake and clutch system Brake and clutch fluid level
R illuminates red.
The brake and clutch fluid level is too low 3 185.9 Warning
Stop. Do not continue your
journey. Consult a workshop.
Illuminates after the ignition is
switched on if the manual parking
brake is applied 3 145.
Operate pedal
- illuminates or flashes yellow.
Instruments and controls101
Messages in the Driver
Information Centre (DIC)
The vehicle messages are displayed
as text. Follow the instructions given
in the messages.
The system displays messages
regarding the following topics:
■ Service messages
■ Fluid levels
■ Anti-theft alarm system
■ Brakes
■ Ride control systems
■ Driver assistance systems
■ Cruise control
■ Speed limiter
■ Parking assist systems
■ Lighting, bulb replacement
■ Wiper/washer system
■ Doors, windows
■ Soft top
■ Load compartment, boot lid
■ Radio remote control
■ Seat belts
■ Airbag systems
■ Engine and transmission
■ Tyre pressure
■ Diesel particle filter
■ Vehicle battery status
Messages in the
Colour-Info-Display
Some important messages may
appear additionally in the
Colour-Info-Display. Press the
multifunction knob to confirm a
message. Some messages only pop
up for a few seconds.Warning chimes
When starting the engine or
whilst driving Only one warning chime will sound at
a time.
The warning chime regarding
unfastened seat belts has priority
over any other warning chime.
■ If seat belt is not fastened.
■ If a door or the boot lid is not fully closed when starting off.
■ If the soft top is not completely opened or closed.
■ If the soft top lid is not completely closed.
■ If the load compartment partition is folded in when operating the soft
top.
■ If a certain speed is exceeded with parking brake applied.
■ If a certain speed is exceeded when
operating the soft top.
■ If a programmed speed or speed limit is exceeded.
102Instruments and controls
■ If a warning message appears inthe Driver Information Centre.
■ If the parking assist detects an object.
■ If unintended lane change occurs.
■ If the diesel particle filter has reached the maximum filling level.
When the vehicle is parked and/ or the driver's door is opened ■ When the key is in the ignition switch.
■ With exterior lights on.
During an Autostop ■ If the driver's door is opened.
Battery voltage When the vehicle battery voltage is
running low, a warning message will
appear in the Driver Information
Centre.1. Switch off immediately any electrical consumers which are
not required for a safe ride, e.g.
seat heating, heated rear window
or other main consumers.
2. Charge the vehicle battery by driving continuously for a while or
by using a charging device.
The warning message will disappear
after the engine has been started
twice consecutively without a voltage
drop.
If the vehicle battery cannot be
recharged, have the cause of the fault
remedied by a workshop.Vehicle personalisation
The vehicle's behaviour can be
personalised by changing the settings in the Info-Display.
Some of the personal settings for
different drivers can be memorised
individually for each vehicle key.
Memorised settings 3 21.
Depending on vehicle equipment and
country-specific regulations some of
the functions described below may
not be available.
Some functions are only displayed or
active when the engine is running.
Personal settings in the
Graphic-Info-Display
CD 300/CD 400/CD400plus