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Instruments and controls101Engine cooling level
Low fluid level in engine cooling
system. Check coolant level 3 154.
Drain diesel fuel filter If there is water in the diesel fuel filter,
the message InSP4 appears in the
instrument panel. Consult a
workshop.
Lighting
Important exterior lights, including
cables and fuses, are monitored. In
trailer mode, trailer lighting is also
monitored. Trailers with LED lighting
must have an adapter that enables
light monitoring as with conventional
bulbs.
The failed lighting will be indicated in
the information display or the
message InSP2 will appear in the
instrument panel display.
Anti-theft alarm system
System fault in anti-theft alarm
system. Have the cause of the fault
remedied by a workshop.
Tyre pressure
On vehicles with tyre pressure
monitoring system, if there is low tyre pressure, information which tyre to
check appears on the display.
Reduce speed and check tyre
pressure at the next opportunity. Tyre
pressure monitoring system 3 174.
Check tyre pressure 3 173, 3 205.
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126Driving and operating
To repeat the starting procedure or to
switch off the engine, press the button again.
Starting the vehicle at low
temperatures
The start of the engine without
additional heaters is possible down to -25 °С for diesel engines and -30 °C
for petrol engines. Required is an engine oil with the correct viscosity,
the correct fuel, performed services
and a sufficiently charged battery.
With temperatures below -30 °C the
automatic transmission and the
manual transmission automated
need a warming phase of approx. 5
minutes. The selector lever must be
in position P respectively N.
Overrun cut-off The fuel supply is automatically cut off
during overrun, i.e. when the vehicle
is driven with a gear engaged but
accelerator is released.Parking
■ Do not park the vehicle on an easily
ignitable surface. The high
temperature of the exhaust system
could ignite the surface.
■ Always apply parking brake without
pressing release button. Apply as
firmly as possible on downhill or
uphill slopes. Depress the foot
brake at same time to reduce
operating force.
■ Switch off the engine and ignition. Turn the steering wheel until the
steering wheel lock engages.
■ If the vehicle is on a level surface or
uphill slope, engage first gear or set
the selector lever to P before
switching off the ignition. On an
uphill slope, turn the front wheels
away from the kerb.
If the vehicle is on a downhill slope, engage reverse gear or set theselector lever to P before switchingoff the ignition. Turn the front
wheels towards the kerb.
■ Lock the vehicle and activate the anti-theft locking system and the
anti-theft alarm system.
Page 154 of 217
152Vehicle care
■ Open bonnet, close all doors andlock the vehicle.
■ Disconnect the clamp from the negative terminal of the vehicle
battery. Beware that all systems are not functional, e.g. anti-theft alarm
system.
Putting back into operation Following must be done if the vehicle
is putting back into operation:
■ Connect the clamp to the negative terminal of the vehicle battery.
Activate the electronics of the
power windows.
■ Check tyre pressure.
■ Fill up the washer fluid reservoir.
■ Check the engine oil level.
■ Check the coolant level.
■ Fit the number plate if necessary.End-of-life vehicle
recovery
Information on end-of-life vehicle
recovery centres and the recycling of
end-of-life vehicles is available on our website. Only entrust this work to an
authorised recycling centre.Vehicle checks
Performing work9 Warning
Only perform engine compartment
checks when the ignition is off.
The cooling fan may start
operating even if the ignition is off.
Page 158 of 217

156Vehicle care
The brake fluid level must be betweenthe MIN and the MAX marks.
When topping up, ensure maximum cleanliness as contamination of the
brake fluid can lead to brake system
malfunctions. Have the cause of the
loss of brake fluid remedied by a
workshop.
Only use high-performance brake
fluid approved for the vehicle, Brake
and clutch fluid 3 155.
Vehicle battery
The vehicle battery is maintenance-
free provided that the driving profile
allows sufficient charging of the
battery. Short-distance-driving and
frequent engine starts can discharge
the battery. Avoid the use of
unnecessary electrical consumers.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Laying up the vehicle for more than
4 weeks can lead to battery
discharge. Disconnect the clamp from the negative terminal of the vehicle
battery.
Ensure the ignition is switched off
before connecting or disconnecting
the vehicle battery.
The anti-theft alarm siren must be
deactivated as follows: Switch the ignition on then off, disconnect the
vehicle's battery within 15 seconds.
Vehicle battery discharge protection
3 115.
Warning label
Meaning of symbols: ■ No sparks, naked flames or smoking.
■ Always shield eyes. Explosive gases can cause blindness or
injury.
Page 172 of 217
170Vehicle care
Fuse box version BNo.Circuit1Front power windows2-3Instruments4Heating, air conditioning
system, electronic climate
control5Airbags6–7–8–9–10–11Heated rear window12Rear window wiper13Parking assist14Heating, air conditioning system15–No.Circuit16Open&Start system17Rain sensor, air quality sensor,
tyre pressure monitoring
system, interior mirror18Instruments, switches19–20CDC21Heated exterior mirrors22–23Rear power windows24Diagnostics plug25–26Electrical foldable exterior
mirrors27Ultrasonic sensor, anti-theft
alarm system28–
Page 212 of 217

210IndexAAccessories and vehicle modifications .......................... 151
Active head restraints ...................45
Active head restraints on front seats ......................................... 22
Adaptive Forward Lighting ........ .................................... 24, 92, 110
Adjustable air vents ...................122
Airbag and belt tensioners ...........87
Airbag system .............................. 58
Air conditioning regular operation ................................ 123
Air conditioning system .............. 117
Air intake .................................... 123
Air vents...................................... 122
Antilock brake system ................ 138
Antilock brake system (ABS) .......88
Anti-theft alarm system ........35, 101
Anti-theft locking system .............. 35
Appearance care ........................187
Apply footbrake ............................ 91
Armrest ........................................ 49
Ashtrays ....................................... 82
Automatic anti-dazzle ..................39
Automatic climate control system .................................... 118
Automatic level control ..............141
Automatic light control ...............108Automatic transmission .............128
Auxiliary heater ........................... 122
B Battery discharge protection ......115
Battery voltage ........................... 100
Board-Info-Display .......................93
Bonnet ....................................... 153
Brake and clutch fluid .................192
Brake and clutch system .............88
Brake assist ............................... 139
Brake fluid .................................. 155
Brake light switch ....................... 100
Brakes ............................... 138, 155
Breakdown.................................. 185
Bulb replacement ....................... 158
C
Capacities .................................. 205
Cargo management system ........71
Car Pass ...................................... 26
Catalytic converter .....................128
Central locking system ................31
Centre console lighting ..............114
Changing tyre and wheel size ...176
Charging system .......................... 87
Check control ............................... 22
Child locks ................................... 34
Child restraint installation locations ................................... 63