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34Keys, doors and windows
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 3 123.
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
Operated by pressing the Ü button.
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
backside of the sun visor.
Roller blinds
To reduce sunlight at the second row seats, pull the blind upwards using
the grip and engage it at the top of the
door frame.
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Keys, doors and windows35Roof
Glass panel Panorama roof
Pull the slider to open the cover of the
panorama roof.
Push the slider to cover the panorama roof.
Sunblind
The sunblind above the rear seats is
electrically operated.
Button
G=openH=close
Press button G or H gently to the first
detent: the sunblind is opened or
closed as long as the switch is
operated.
Press button 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 operational 3 160.
Initialising after a power failure
After a power failure, it may only be
possible to operate the sunblind to a limited extent. Initialise the system as follows:
1. Turn key in ignition switch to position 1.
2. Press button G (open) twice
gently to the first detent, the
sunblind opens slightly.
3. Immediately press button H
(close) twice gently to the first detent, the sunblind closes
slightly.
After step 3 the sunblind is in
initialising mode without safety
function.
Page 38 of 299
36Keys, doors and windows
4.Press button G (open) gently to
the first detent until the sunblind is
completely opened.
5. Press button H (close) gently to
the first detent until the sunblind is
completely closed.
After this procedure, the sunblind is
initialised with safety function
activated.
When G or H is pressed firmly to the
second detent during initialising, the
procedure is cancelled.
Page 60 of 299

58Seats, restraints
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 theposition:OFF *=front passenger airbag is
deactivated and will not
inflate in the event of a
collision. Control indicator
OFF * illuminates
continuously in the centre
console. A child restraint
system can be installed in
accordance with the
chart Child restraint
installation locations
3 61. No adult person is
allowed to occupy the
front passenger seat.ON V=front passenger airbag is
active. A child restraint
system must not be
installed.9 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.
If the control indicator ON V
illuminates for approx. 60 seconds
after the ignition is switched on, the
front passenger airbag system will
inflate in the event of a collision.
If both control indicators are
illuminated at the same time, there is
a system failure. The status of the
system is not discernible, therefore
no person is allowed to occupy the
front passenger seat. Contact a
workshop immediately.
Page 117 of 299

Instruments and controls115Tyre pressure monitoring
system
w illuminates or flashes yellow.
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.
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 the
assistance of a workshop 3 225.
Low fuel
i illuminates or flashes yellow.
Illuminates Level in fuel tank is too low.
Flashes
Fuel used up. Refuel immediately.
Never run the tank dry.
Catalytic converter 3 166.
Bleeding the diesel fuel system
3 230.
Immobiliser
d flashes yellow.
Fault in the immobiliser system. The
engine cannot be started.
Page 129 of 299

Instruments and controls127
■ If an unintended lane changeoccurs.
■ If reverse gear is engaged and the rear end carrier is extended.
■ If the diesel particle filter has reached the maximum filling level.
■ If AdBlue needs to be refilled.
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 two times
consecutively without a voltage drop.
If the vehicle battery cannot be
recharged, have the cause of the fault
remedied by a workshop.Trip computer
The menus and functions can be
selected via the buttons on the turn
signal lever.
Press the MENU button to select the
Trip/Fuel Information Menu , or select
W on the Uplevel-Combi-Display.
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130Instruments and controls
To reset, press the SET/CLR button
for a few seconds.
Digital speed Digital display of the instantaneous
speed.
Traffic sign assistant
Indicates detected traffic signs for the
current route section 3 204.
Route guidance
Additionally to the navigation
information in the Color-Info-Display,
route guidance is displayed in the
Driver Information Centre.
Different indication on vehicles with
natural gas engine:
Range
Range is indicated for petrol mode and natural gas mode.
Both modes can be indicated added
together.
Average consumption
Average consumption is always
indicated in the selected mode.Fuel selector 3 105.
Instantaneous consumption Instantaneous consumption is always
indicated in the selected mode.
Fuel selector 3 105.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 23.
Depending on vehicle equipment and country-specific regulations some ofthe 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
Page 143 of 299

Lighting141
Dynamic automatic headlight
levelling 3 141.
Headlights when driving
abroad
The asymmetrical headlight beam
extends visibility at the edge of the
road at the passenger side.
However, when driving in countries
where traffic drives on the opposite
side of the road, adjust the headlights
to prevent dazzling of oncoming
traffic.
Vehicles with halogen headlight
system The headlights do not have to be
adjusted.Vehicles with Xenon headlight
system
1. Key in ignition switch.
2. Pull turn signal lever and hold (headlight flash).
3. Switch on ignition.
4. After approx. 5 seconds the control indicator f starts flashing
and an acoustic signal sounds.
Control indicator f 3 116.
Every time the ignition is switched on,
f flashes as a reminder for approx. 4
seconds.
For deactivation operate the same
procedure as described above. f will
not flash when function is
deactivated.
Daytime running lights
Daytime running light increases
visibility of the vehicle during daylight.
They are switched on automatically
when ignition is on.
If the vehicle is equipped with
automatic light control function, the
system switches between daytime running light and low/high beam
automatically depending on the
lighting conditions and information
given by the rain sensor system.
Automatic light control 3 139.
Adaptive forward lighting
The Adaptive forward lighting
functions are only available with Bi-
Xenon headlights. Light range, light
distribution and intensity of light are
variably triggered depending on the
light conditions, weather and road
type.