Page 82 of 209

80Instruments and controlsCharging system
p illuminates red.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
Illuminates when the engine isrunning
Stop, switch off engine. Vehicle
battery is not charging. Engine
cooling may be interrupted. The
brake servo unit may cease to be
effective. Seek the assistance of a
workshop.
Malfunction indicator light
Z illuminates or flashes yellow.
Illuminates briefly when the ignition is switched on.
Illuminates when the engine is
running
Fault in the emission control system.
The permitted emission limits may be
exceeded. Seek the assistance of a
workshop immediately.Flashes when the engine is
running
Fault that could lead to catalytic
converter damage. Ease up on the
accelerator until the flashing stops.
Seek the immediate assistance of a
workshop.
Service vehicle soon A illuminates yellow.
Illuminates briefly when the ignition is
switched on.
The vehicle needs a service.
May illuminate in combination with
another control indicator or a
message in the Driver Information
Centre 3 84.
Illuminates if cleaning of the diesel
particle filter is required and
automatic cleaning does not occur
3 115.
Seek the assistance of a workshop
immediately.
Stop engine
C illuminates red.Illuminates for a few seconds when
the ignition is switched on.
If C illuminates (possibly in
combination with W and/or R), stop
engine immediately and seek the
assistance of a workshop.
Depending on the type of fault, a
warning message may also appear in the Driver Information Centre 3 84.
Brake system R illuminates red.
Illuminates briefly when the ignition is
switched on.
Control indicator R remains
illuminated after the ignition is
switched on if the parking brake is
applied 3 122.
When the parking brake is released,
R illuminates (possibly in
combination with C) if the brake fluid
level is too low 3 141.
Page 85 of 209

Instruments and controls83
3. Move out of the flow of traffic asquickly 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 is stationary, otherwise the steeringwheel lock could engage
unexpectedly.
Check oil level before seeking
assistance of a workshop 3 137.
Low fuel
Y illuminates yellow.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
Illuminates when the engine is
running
Fuel level in the tank is too low. Refuel immediately.
Never run the tank dry.
Refuelling 3 131.
Catalytic converter 3 116.
Bleeding the diesel fuel system
3 143.
Drain fuel filter
Q illuminates yellow.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
Illuminates when the engine is running
Indicates the presence of water in the diesel. Seek the assistance of a
workshop immediately.
Stop-start system \
Not used.Ï illuminates or flashes yellow /
green.
Illuminates
Illuminates green during an Autostop.
If Ï illuminates yellow there is a fault
in the stop-start system. Seek the
assistance of a workshop.
Flashes Flashes green during an automatic
restart.
Stop-start system 3 111.
Exterior light 9 illuminates green.
Illuminated when the exterior lights
are on 3 89.
High beam P illuminates blue.
Illuminated when high beam is on and during headlight flash 3 90.
Page 118 of 209

116Driving and operating
process takes place automatically
and the emission of smells and
smoke during this process is normal.
Under certain driving conditions, e.g.
short distances, the system cannot
clean itself automatically.
If cleaning of the filter is required and if previous driving conditions did not
enable automatic cleaning, it will be
indicated by illumination of control
indicator A 3 80. Seek the
assistance of a workshop
immediately.
Catalytic converter
The catalytic converter reduces the
amount of harmful substances in the
exhaust gases.Caution
Fuel grades other than those listed on page 3 130, 3 182 could
damage the catalytic converter or
electronic components.
Unburnt petrol will overheat and
damage the catalytic converter.
Therefore avoid excessive use of the starter, running the fuel tank
dry and starting the engine by
pushing or towing.
In the event of misfiring, uneven
engine running, a reduction in engine performance or other unusual
problems, have the cause of the fault
rectified by a workshop as soon as
possible. In an emergency, driving
can be continued for a short period,
keeping vehicle speed and engine
speed low.
If control indicator Z flashes, the
permitted emission limits may be
exceeded. Lift your foot off the
accelerator until Z stops flashing and
is steadily illuminated. Contact a
workshop immediately.
Malfunction indicator light 3 80.
Page 204 of 209

202IndexAAccessories and vehicle modifications .......................... 135
Adaptive forward lighting .....91, 147
Adjustable air vents ...................106
Airbag and belt tensioners ...........79
Airbag deactivation ................51, 79
Airbag label................................... 46 Airbag system .............................. 46
Air conditioning regular operation ................................ 107
Air conditioning system ................ 97
Air intake .................................... 107
Air suspension ........................... 114
Air vents...................................... 106
Antifreeze ................................... 138
Antilock brake system ................ 121
Antilock brake system (ABS) .......81
Anti-theft alarm system ................27
Anti-theft locking system .............. 27
Appearance care ........................171
Armrest ........................................ 41
Ashtrays ....................................... 73 Automatic light control .................89
Automatic locking ........................23
Auxiliary heater ........................... 102B
Battery, jump starting.................. 168
Belts.............................................. 44 Bonnet ....................................... 137
Brake assist ............................... 122
Brake fluid .......................... 141, 176
Brake pad wear ............................ 81
Brakes ............................... 121, 141
Brake system ............................... 80
Breakdown.................................. 170
Bulb replacement ....................... 144
C
Capacities .................................. 197
Cargo management system ........64
Car Pass ...................................... 18
Catalytic converter .....................116
Central locking system ................19
Centre high-mounted brake light 150
Changing tyre and wheel size ...160
Charging system .......................... 80
Child locks ................................... 23
Child restraint installation locations ................................... 54
Child restraints.............................. 52
Child restraint systems ................52
Cigarette lighter ........................... 73
Cleaning the vehicle ...................171
Climate control ............................. 14