Page 34 of 247
32Keys, doors and windows
Child safety system for rearwindows
Press z to deactivate rear door
power windows, the LED illuminates.
To activate, press z again.
Operating windows from outside
The windows can be operated
remotely from outside the vehicle.
Press and hold c to open windows.
Press and hold e to close windows.
Release button to stop window
movement.
Overload If the windows are repeatedly
operated within short intervals, the
window operation is disabled for
some time.
Initialising the power windowsIf the windows cannot be closed
automatically (e.g. after
disconnecting the vehicle battery), a
warning message or a warning code
is displayed in the Driver Information
Centre.
Vehicle messages 3 105.
Activate the window electronics as follows:
1. Close doors.
2. Switch on ignition.
3. Pull switch until the window is closed and keep pulling for
additional 2 seconds.
4. Repeat for each window.
Heated rear window
Page 35 of 247

Keys, doors and windows33
Operated by pressing Ü.
Heating works with the engine
running and is switched off
automatically after a short time.
Depending on the engine type, the
heated rear window comes on
automatically when the diesel particle filter is being cleaned.
Sun visors
The sun visors can be folded down or swivelled to the side to prevent
dazzling.
If the sun visors have integral mirrors, the mirror covers should be closed
when driving.
A ticket holder is located on the back
of the sun visor.Roof
Moonroof Do not affix any stickers to the roof.
Do not cover the vehicle using a
tarpaulin.
Sunblind The sunblind is electrically operated.
Press G or H gently to the first
detent: the sunblind is opened or
closed as long as the switch is
operated.
Press G or H firmly to the second
detent and then release: the sunblind
is opened or closed automatically. To stop movement, operate the switch
once more.
Safety function
If the sunblind encounters resistance
during automatic closing, it is
immediately stopped and opened again.
Function standby In ignition switch position 1 the
sunblind is operable 3 136.
Initialising after a power failure
After a power failure, it may only be
possible to operate the sunblind to a
limited extent. Have the system
initialised by your workshop.
Page 45 of 247
Seats, restraints43
Insert the hooks of the adapter into
the recesses of the seatback and
push the adapter forwards.
Lock the adapter by turning the
ignition key clockwise in the lock. The adapter is locked properly when the
green mark is visible.
Mount the armrest on the adapter.
Armrest 3 39.
Attaching the armrest to the
adapter
Press the front button and insert the
front guide pins into the guide rails. Move the armrest until it engages
audibly. Release the button.
Lower the armrest at the rear. Pull the rear handle firmly and insert the rear
guide pins into the guide rails.
Release the handle.
Notice
Install the armrest in the direction
shown in the illustration. Otherwise
the armrest may not engage
properly.
Removing the armrest Pull the rear handle firmly and raise
the armrest at the rear. Press the front
button and remove the armrest.
Page 46 of 247

44Seats, restraints
Removing the adapter
Unlock the adapter by turning the
ignition key anticlockwise in the lock.
The adapter is unlocked when the red mark is visible.
Push the adapter rearward and
remove.Seat belts
The seat belts are locked during
heavy acceleration or deceleration of
the vehicle holding the occupants in
the sitting position. Therefore the risk
of injury is considerably reduced.
9 Warning
Fasten seat belt before each trip.
In the event of an accident, people
not wearing seat belts endanger their fellow occupants and
themselves.
Seat belts are designed to be used by only one person at a time. Child
restraint system 3 54.
Periodically check all parts of the belt
system for damage, pollution and
proper functionality.
Have damaged components
replaced. After an accident, have the
belts and triggered belt pretensioners replaced by a workshop.
Notice
Make sure that the belts are not
damaged by shoes or sharp-edged
objects or are trapped. Prevent dirt
from getting into the belt retractors.
Seat belt reminder X 3 94.
Belt force limiters Stress on the body is reduced by the
gradual release of the belt during a
collision.
Belt pretensioners In the event of a head-on or rear-end
collision of a certain severity, the front
seat belts are tightened.
Page 55 of 247

Seats, restraints539Warning
Keep the area in which the airbag
inflates clear of obstructions.
The hooks in the roof frame are
only suitable for hanging up light
articles of clothing, without coat
hangers. Do not keep any items in these clothes.
Airbag deactivation
The front passenger airbag system
must be deactivated if a child restraint system is to be fitted on this seat. The
side airbag and curtain airbag
systems, the belt pretensioners and
all driver airbag systems will remain
active.
The front passenger airbag system can be deactivated via a key-
operated switch on the right side of the instrument panel.
Use the ignition key to choose the
position:*=front passenger airbag is
deactivated and will not inflate in the event of a collision. Control
indicator * illuminates
continuously in the centre
console. A child restraint
system can be installed in
accordance with the chart Child
restraint installation locations
3 57. No adult person is
allowed to occupy the front
passenger seatV=front passenger airbag is active. A child restraint system must
not be installed9 Danger
Risk of fatal injury for a child using
a child restraint system on a seat
with activated front passenger
airbag.
Risk of fatal injury for an adult
person on a seat with deactivated
front passenger airbag.
Page 100 of 247

98Instruments and controls
Illuminates
Tyre pressure loss. Stop immediately
and check tyre pressure.
Flashes Fault in system or tyre without
pressure sensor mounted (e.g. spare wheel). After 60-90 seconds the
control indicator illuminates
continuously. Consult a workshop.
Tyre pressure monitoring system
3 194.
Engine oil pressure
I illuminates red.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.Illuminates when the engine is
runningCaution
Engine lubrication may be
interrupted. This may result in
damage to the engine and/or
locking of the drive wheels.
1. Depress clutch.
2. Select neutral gear, set selector lever to N.
3. Move out of the flow of traffic as quickly as possible without
impeding other vehicles.
4. Switch off ignition.
9 Warning
When the engine is off,
considerably more force is needed
to brake and steer. During an
Autostop the brake servo unit will still be operational.
Do not remove key until vehicle isstationary, otherwise the steeringwheel lock could engage
unexpectedly.
Check oil level before seeking
assistance of a workshop 3 170.
Low fuel
i illuminates or flashes yellow.
Illuminates Level in fuel tank is too low.
Additionally a warning message is
displayed on vehicles with Uplevel-
Display.
Flashes
Fuel used up. Refuel immediately.
Never run the tank dry.
Additionally a warning message is
displayed on vehicles with Midlevel- and Uplevel-Display.
Catalytic converter 3 142.
Bleeding the diesel fuel system
3 176.
Page 110 of 247

108Instruments and controls
Vehicle messages on theColour-Info-Display
Some important messages 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 Only one warning chime will sound at
a time.
The warning chime regarding
unfastened seat belts has priority
over any other warning chime.
When starting the engine or
whilst driving ■ 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 parking brake applied.
■ If a programmed speed is exceeded.■ If a warning message or a warning code appears in the Driver
Information Centre.
■ If the parking assist detects an object.
■ If reverse gear is engaged and the rear end carrier is extended.
■ If a fault in the automatic locking system is detected.
■ 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 or
warning code 174 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 or warning
code 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.
Page 114 of 247

112Instruments and controlsVehicle personalisationThe 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 might
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/CD 400plus
Press CONFIG . The menu Settings is
displayed.
The following settings can be
selected by turning and pressing the
multifunction knob:
■ Languages
■ Time Date
■ Radio settings
■ Phone settings
■ Vehicle settings
In the corresponding submenus the
following settings can be changed:
Languages
Selection of the desired language.
Time Date
See Clock 3 86.
Radio settings
See description for Infotainment
system in the Infotainment system
manual.
Phone settings
See description for Infotainment
system in the Infotainment system
manual.