Page 22 of 297

20Keys, doors and windowsRadio remote control
Used to operate:■ Central locking system
■ Anti-theft locking system
■ Anti-theft alarm system
■ Power windows
The radio remote control has an
approximate range of up to
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
Settings menu in the Info-Display.
Vehicle personalisation 3 126.
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
Page 58 of 297

56Seats, restraints
Use the ignition key to choose the
position: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 58. 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.
Change status only when the vehicle
is stopped with the ignition off.
Status remains until the next change.
Control indicator for airbag
deactivation 3 108.
Page 99 of 297
Instruments and controls97Rear window wiper/washer
Press the rocker switch to activate the
rear window wiper:
upper position=continuous
operationlower position=intermittent
operationmiddle position=off
Push lever. Washer fluid is sprayed
onto the rear window and the wiper
wipes a few times.
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
Settings menu in the Info-Display.
Vehicle personalisation 3 126.
The rear window washer system is
deactivated when the fluid level is too
low.
Outside temperature
A drop in temperature is indicated
immediately and a rise in temperature
after a time delay.
Page 100 of 297

98Instruments and controls
If outside temperature drops to 3 °C,
a warning message is displayed in the Driver Information Centre with
Uplevel-Combi-Display.
9 Warning
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
Info-Display.
Time and date settings
CD 400plus/CD 400/CD 300
Press the CONFIG button. The menu
Settings is displayed.
Select Time Date .
Selectable setting options:
■ Set time: : Changes the time shown
on the display.
■ Set date: : Changes the date shown
on the display.
■ Set time format : Changes
indication of hours between 12 h
and 24 h.
■Set date format : Changes
indication of date between MM/DD/
YYYY and DD.MM.YYYY .
■ RDS clock synchronization : The
RDS signal of most VHF
transmitters automatically sets the
time. RDS time synchronisation
can take a few minutes. Some
transmitters do not send a correct
time signal. In such cases, it is
recommended to switch off
automatic time synchronisation.
Vehicle personalisation 3 126.
Time and date settings
Navi 950/Navi 650/CD 600
Press the Config button and then
select the Time and Date menu item
to display the respective submenu.
Page 106 of 297

104Instruments and controlsCaution
If engine coolant temperature is
too high, stop vehicle, switch off
engine. Danger to engine. Check
coolant level.
Service display
The engine oil life system lets you
know when to change the engine oil
and filter. Based on driving
conditions, the interval at which an
engine oil and filter change will be
indicated can vary considerably.
In the Uplevel-Combi-Display, the
remaining oil life duration is displayed
in the Vehicle Information Menu .
In the Midlevel-Display, the remaining engine oil life duration is displayed by
the control indicator I, therefore the
ignition must be switched on, with the
engine not running.
The menu and function can be
selected via the buttons on the turn signal lever.
To display the remaining engine oil life duration:
Press the MENU button to select the
Vehicle Information Menu .
Turn the adjuster wheel to select
Remaining Oil Life .
The system must be reset every time
the engine oil is changed to allow proper functionality. Seek the
assistance of a workshop.
Press the SET/CLR button to reset.
Therefore the ignition must be
switched on, with the engine not
running.
When the system has calculated that
engine oil life has been diminished,
Change Engine Oil Soon or a warning
code appears in the Driver
Information Centre. Have engine oil
and filter changed by a workshop
within one week or 300 miles
(whichever occurs first).
Driver Information Centre 3 114.
Service information 3 264.
Control indicators The control indicators described are
not present in all vehicles. The
description applies to all instrument
versions. Depending on the
equipment, the position of the control
Page 125 of 297

Instruments and controls123
■ 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 adaptive cruise control deactivates automatically.
■ If approaching a vehicle ahead too closely.
■ If a programmed speed or speed limit is exceeded.
■ If a warning message or a warning code appears in the Driver
Information Centre (DIC).
■ If the parking assist detects an object.
■ If an unintended lane change occurs.
■ 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.
Page 129 of 297
Instruments and controls127
Press the CONFIG button. The menu
Settings is displayed.
The following settings can be
selected by turning and pressing the
multifunction knob:
■ Sport mode settings
■ Languages
■ Time Date
■ Radio settings
■ Phone settings
■ Vehicle settings
In the corresponding submenus, the
following settings can be changed:
Sport mode settings
The driver can select the functions
which will be activated in Sport mode
3 171.
■ Sport suspension : Damping
becomes harder.
■ Sport powertrain performance :
Accelerator pedal and gear change
characteristics become more
responsive.■ Sport steering : Steering support is
reduced.
■ Swap backlight colour main instr. :
Changes the instrument
illumination colour.
Languages
Selection of the desired language.
Time Date
See Clock 3 98.
Radio settings
See Infotainment system manual for further information.
Phone settings
See Infotainment system manual for
further information.
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128Instruments and controls
Vehicle settings
■Climate and air quality
Auto fan speed : Modifies the fan
regulation. Changed setting will be
active after switching the ignition off
and on again.
Climate control mode : Activates or
deactivates the cooling every time
the ignition is switched on or uses
the last chosen setting.
Auto rear demist : Activates heated
rear window automatically.
■ Comfort settings
Chime volume : Changes the
volume of warning chimes.
Personalization by driver : Activates
or deactivates the personalisation
function.
Rear auto wipe in reverse :
Activates or deactivates automatic
switching on of the rear window
wiper when reverse gear is
engaged.
■ Park assist / Collision detection
Park assist : Activates or
deactivates the ultrasonic parking
assist.
Auto collision preparation :
Activates or deactivates the
automatic brake functionality of the vehicle in the event of imminent
collision danger. The following is
selectable: the system will take
over brake control, warn by chimes
only or is deactivated completely.
Side blind zone alert : Changes the
settings for the side blind spot alert
system.
■ Exterior ambient lighting
Duration upon exit of vehicle :
Activates or deactivates and
changes the duration of exit
lighting.
Exterior lighting by unlocking :
Activates or deactivates the
welcome lighting.
■ Power door locks
Auto door lock : Activates or
deactivates the automatic door
unlocking function after switching off ignition. Activates or deactivates the automatic door locking function
after driving-off.