Climate control131Maintenance
Air intake
The air intake in front of the
windscreen in the engine
compartment must be kept clear to
allow air intake. Remove any leaves,
dirt or snow.
Pollen filter
The pollen filter cleans dust, soot,
pollen and spores from the air
entering the vehicle through the air
intake.
Air conditioning regular
operation In order to ensure continuously
efficient performance, cooling must
be operated for a few minutes once a
month, irrespective of the weather
and time of year. Operation with
cooling is not possible when the
outside temperature is too low.
Service
For optimal cooling performance, it is recommended to annually check the
climate control system, starting
three years after initial vehicle
registration, including:
■ Functionality and pressure test■ Heating functionality
■ Leakage check
■ Check of drive belts
■ Cleaning of condenser and evaporator drainage
■ Performance check
136Driving and operating
An Autostop is indicated by the
needle at the AUTOSTOP position in
the tachometer.
During an Autostop, the heating and
brake performance will be
maintained.
Caution
The steering assist can be
reduced during an Autostop.
Conditions for an Autostop
The stop-start system checks if each
of the following conditions is fulfilled:
■ The stop-start system is not manually deactivated
■ the bonnet is fully closed
■ the driver's door is closed or the driver's seat belt is fastened
■ the vehicle battery is sufficiently charged and in good condition
■ the engine is warmed up
■ the engine coolant temperature is not too high
■ the engine exhaust temperature is not too high, e.g. after driving with
high engine load
■ the ambient temperature is above -5° C
■ the climate control system allows an Autostop
■ the brake vacuum is sufficient
■ the self-cleaning function of the diesel particle filter is not active
■ the vehicle was driven at least at walking speed since the last
AutostopOtherwise an Autostop will be
inhibited.
Certain settings of the climate control
system may inhibit an Autostop. See
Climate control chapter for more
details 3 125.
Immediately after motorway driving
an Autostop may be inhibited.
New vehicle running-in 3 133.
Battery discharge protection
To ensure reliable engine restarts,
several battery discharge protection
features are implemented as part of
the stop-start system.
Power saving measures
During an Autostop, several electrical
features, e.g. auxiliary electric heater
or rear window heating are disabled
or switched into a power saving
mode. The fan speed of the climate
control system is reduced to save
power.
Driving and operating137
Restart of the engine by the
driver Depress the clutch pedal to restart the
engine.
The engine start is indicated by the
needle at the idle speed position in
the tachometer.
If the selector lever is shifted out of
neutral before depressing the clutch
first, control indicator - illuminates
or is shown as a symbol in the Driver Information Centre.
Control indicator - 3 90.
Restart of the engine by the
stop-start system The selector lever has to be in neutral
to enable an automatic restart.
If one of the following conditions
occurs during an Autostop, the
engine will be restarted automatically by the stop-start system:
■ The stop-start system is manually deactivated
■ the bonnet is opened
■ the driver's seat belt is unfastened and the driver's door is opened■ the engine temperature is too low
■ the charging level of the vehicle battery is below a defined level
■ the brake vacuum is not sufficient
■ the vehicle is driven at least at walking speed
■ the climate control system requests
an engine start
■ the air conditioning is manually switched on
If the bonnet is not fully closed, a warning message is displayed in the
Driver Information Centre.
If an electrical accessory, e.g. a
portable CD player, is connected to
the power outlet, a brief power drop
during restart might be noticeable.
Parking9 Warning
■ Do not park the vehicle on an
easily ignitable surface. The
high temperature of the exhaust system could ignite the surface.
■ Always apply the parking brake.
Activate the manual parking
brake without pressing the
release button. Apply as firmly
as possible on a downhill slope
or uphill slope. Depress foot
brake at the same time to
reduce operating force.
For vehicles with electric
parking brake, pull switch m for
approx. one second.
The electric parking brake is
applied when control indicator
m illuminates 3 90.
■ Switch off the engine. ■ If the vehicle is on a level surface or uphill slope, engage
first gear or set the selector lever
to position P before removing
the ignition key. 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 the selector lever to position P before removing the ignition
198Vehicle care
No.Circuit1Engine control module2Lambda sensor3Fuel injection, ignition system4Fuel injection, ignition system5–6Mirror heating7Fan control8Lambda sensor, engine cooling9Rear window sensor10Vehicle battery sensor11Trunk release12Adaptive forward lighting, auto‐
matic light control13ABS Valves14–15Engine control module16StarterNo.Circuit17Transmission control module18Heated rear window19Front power windows20Rear power windows21Rear eletrical centre22Left high beam (Halogen)23Headlamp washer system24Right low beam (Xenon)25Left low beam (Xenon)26Front fog lights27Diesel fuel heating28Start stop system29Electric parking brake30ABS pump31–32AirbagNo.Circuit33Adaptive forward lighting, auto‐
matic light control34Exhaust gas recirculation35Power windows, rain sensor,
exterior mirror36Climate control37–38Vacuum pump39Fuel system control module40Windscreen washer system41Right high beam (Halogen)42Radiator fan43Windscreen wiper44–45Radiator fan46–47Horn
244IndexAAccessories and vehicle modifications .......................... 180
Active head restraints ...................46
Adaptive forward lighting ..........
.................................. 94, 113, 190
Adjustable air vents ...................130
Airbag, belt tensioners and anti- roll bars ..................................... 89
Airbag deactivation ................62, 89
Airbag label................................... 57 Airbag system .............................. 57
Air conditioning regular operation ................................ 131
Air conditioning system .............. 123
Air intake .................................... 131
Air vents...................................... 130
Antilock brake system ................ 143
Antilock brake system (ABS) .......91
Anti-theft alarm system ................26
Anti-theft locking system .............. 26
Appearance care ........................221
Armrest ......................................... 53
Armrest storage ........................... 71
Ashtrays ....................................... 84 Automatic anti-dazzle ..................30
Automatic light control ...............110
Automatic locking ........................23Automatic transmission .............140
Auxiliary heater ........................... 130
B Battery discharge protection ......120
Battery voltage ........................... 103 Bonnet ....................................... 182
Brake and clutch fluid .................226
Brake and clutch system .............90
Brake assist ............................... 146
Brake fluid .................................. 185
Brakes ............................... 143, 185
Breakdown.................................. 219
Bulb replacement ....................... 188
C
Capacities .................................. 237
Car Pass ...................................... 19
Catalytic converter .....................139
Central locking system ................21
Centre console storage ...............71
Changing tyre and wheel size ...208
Charging system .......................... 90
Child restraint installation locations ................................... 65
Child restraints.............................. 63
Child restraint systems ................63
Cigarette lighter ........................... 84
Climate control ............................. 14
Climate control systems .............122
245
Clock............................................. 81
Code ........................................... 101
Control indicators.......................... 87
Control of the vehicle .................132
Controls ........................................ 77
Convex shape .............................. 29
Coolant and antifreeze ...............226
Cruise control ...................... 94, 150
Cupholders .................................. 70
Curve lighting.............................. 113
D Danger, Warnings and Cautions ...3
Daytime running lights ...............113
Declaration of conformity ............240
Diesel fuel system bleeding .......187
Diesel particle filter ...............92, 138
Door open .................................... 94
Doors ............................................ 24
Driver assistance systems ..........150
Driver Information Centre .............95
Driving characteristics and towing tips .............................. 174
Driving hints ................................ 132
E
Electric adjustment ......................29
Electrical system......................... 196
Electric parking brake ...........91, 144
Electric parking brake fault ...........91Electronic climate control system 125
Electronic driving programmes ..141
Electronic Stability Control.......... 147
Electronic Stability Control and Traction Control system ............92
Electronic Stability Control off....... 92
End-of-life vehicle recovery .......181
Engine compartment fuse box ...197
Engine coolant ........................... 184
Engine coolant temperature gauge ....................................... 86
Engine data ............................... 233
Engine exhaust .......................... 138
Engine identification ...................229
Engine oil ................... 182, 226, 230
Engine oil pressure ......................93
Entry lighting .............................. 119
Event data recorders ..................242
Exit lighting ................................ 120
Exterior care .............................. 221
Exterior light ................................. 94
Exterior lighting ....................12, 109
Exterior mirrors ............................. 29
F
Fault ........................................... 142
First aid ......................................... 75
First aid kit ................................... 75
Fixed air vents ........................... 130
Fog light ....................................... 94Fog lights ................................... 191
Folding mirrors ............................. 29
Following distance indication ......155
Forward collision alert................. 153
Front airbag system .....................60
Front fog lights ........................... 117
Front seats.................................... 47
Front storage ................................ 70
Front turn signal lights ...............192
Fuel............................................. 171
Fuel consumption - CO 2-
Emissions ............................... 173
Fuel for diesel engines ..............172
Fuel for petrol engines ...............171
Fuel gauge ................................... 86
Fuses ......................................... 196
G
Gauges ......................................... 84
General information ...................174
Glovebox ..................................... 69
Graphic-Info-Display, Colour- Info-Display .............................. 99
Ground clearance .......................133
H Halogen headlights ....................188
Hand brake ......................... 143, 144
Hazard warning flashers ............116
Headlight flash ........................... 111