
64Cockpit
ItemSymbolMeaning of control and warning
lampsFurther infor-mation
1Engine fault (petrol engine)⇒ page 68
1
Glow plug system for diesel engine
If lit: glow plug system active
If flashing: engine fault⇒ page 68
2Soot accumulation in the diesel en-
gine particulate filter⇒ page 68
3
Red:
Engine oil pressure
⇒ page 69Yellow:
If flashing: engine oil sensor faulty
If it remains lit: insufficient engine
oil
4Bulb defective⇒ page 69
5Level of liquid for washing windows
too low.⇒ page 69
6Rear fog light switched on⇒ page 69
7Seat belt warning lamp*⇒ page 18
8Anti-lock brake system (ABS) *⇒ page 69
9
If flashing: the Electronic Stability
Control (ESC) is working or the ASR
is working
If it remains lit: ESC or ASR faulty⇒ page 70
⇒ page 71
10Brake fluid required or
serious fault in brake system⇒ page 71
11Handbrake on⇒ page 154
ItemSymbolMeaning of control and warning
lampsFurther infor-mation
12Cruise speed activated (Cruise con-
trol)⇒ page 71
13Tyre pressure*⇒ page 71
14Selector lever lock (automatic gear-
box)⇒ page 73
15Fuel level / reserve⇒ page 73
16Doors open⇒ page 73
17Rear lid open⇒ page 73
18Airbag or belt tensioner system fault
or airbag disabled⇒ page 30
19Main beam switched on⇒ page 73
20Start-Stop system switched off⇒ page 143
21Electro-hydraulic steering⇒ page 73
22Fault in the emission control system⇒ page 74
23Coolant level / coolant temperature⇒ page 74
24Alternator fault⇒ page 74
25If it stays lit: ASR switched off⇒ page 70
⇒ page 71

74Cockpit
Emission control system*
This warning lamp monitors the exhaust system.
Control lamp flashes:
When there is misfiring that can damage the catalytic converter. Reduce
speed and drive carefully to the nearest specialised workshop to have the
engine checked.
Control lamp is lit:
If a fault has developed during driving which has reduced the quality of the
exhaust gas (e.g. lambda probe fault). Reduce speed and drive carefully to
the nearest specialised workshop to have the engine checked.
Coolant level* / temperature
The warning lamp lights up if the coolant temperature is too
high or if the coolant level is too low.
There is a fault if:
● The warning symbol does not go out again after a few seconds.
● The warning lamp lights up or flashes while the vehicle is moving, and
three acoustic warning signals ⇒
are emitted.
This means that either the coolant level is too low or the coolant tempera-
ture is too high.
Coolant temperature too high
If the warning light comes on, stop the vehicle, switch off the engine and
wait for it to cool down. Check the coolant level.
If the coolant level is correct, the overheating may be caused by a malfunc-
tion of the radiator fan. Check the radiator fan fuse and have it replaced if
necessary ⇒ page 224. If the control lamp lights up again after driving on for a short distance,
stop
the vehicle and switch the engine off . Contact a Technical Service or a spe-
cialised workshop.
Coolant level too low
If the warning light comes on, stop the vehicle, switch off the engine and
wait for it to cool down First check the coolant level. If the level of the cool-
ant is below the “MIN” mark, top up with coolant liquid ⇒
.
WARNING
● If your vehicle is immobilised for technical reasons, move it to a safe
distance from traffic. Turn the engine off, turn the hazard lights on and
place the warning triangle.
● Never open the bonnet if you can see or hear steam or coolant escap-
ing from the engine compartment. Risk of scalding. Wait until you can no
longer see or hear escaping steam or coolant.
● The engine compartment is a dangerous area! Before carrying out any
work in the engine compartment, switch off the engine and allow it to
cool down. Always note the corresponding warnings ⇒ page 193.
Alternator
This warning lamp signals a fault in the alternator.
The warning lamp lights up when the ignition is switched on. It should
go out when the engine has started running.
If the warning lamp lights up while driving, the alternator is no longer
charging the battery. You should immediately drive to the nearest special-
ised workshop.
You should avoid using electrical equipment that is not absolutely necessa-
ry because this will drain the battery.

144Driving
Start-Stop function conditions
● The driver seat belt must be buckled.
● The bonnet must be closed.
● The engine must be at operating temperature.
● The steering wheel must be straight.
● The vehicle must be on flat ground.
● The vehicle must not be in reverse.
● A trailer must not be connected.
● The temperature of the interior must be within the convenience limits
( AC
button should be selected).
● The windscreen de-mist function must be off.
● If in an increase in airflow is not requested.
● The temperature must not be set to HI or LO.
● The driver door must be closed.
● The diesel particulate filter must not be in regeneration mode, for diesel
engines.
● The battery charge must not be low for the next start.
● The battery temperature must be between –1°C and 55°C.
Start-Stop function interruption
In the following situations, the Start-Stop function will be interrupted and
the engine will automatically start:
● The vehicle starts moving.
● The brake pedal is pressed several times in a row.
● The battery has been discharged excessively.
● The Start-Stop System is manually deactivated.
● The windscreen de-mist function is turned on.
● The temperature of the interior exceeds the convenience limits ( AC
but-
ton).
● If the airflow is increased by more than 3 presses. ●
Temperature setting HI or LO is selected.
● The engine coolant temperature is insufficient.
● The alternator is faulty, for example the V-belt has ruptured.
● If any of the conditions described in the previous section are not fulfil-
led.
WARNING
Never allow the vehicle to move with the engine off for any reason. You
could lose control of your vehicle. This could cause an accident and seri-
ous injury.
● The brake servo does not work with the engine off. You need more
force to stop the vehicle.
● Power steering does not work when the engine is not running. That is
why it is much more difficult to turn the steering wheel.
● Turn off the Start-Stop system when driving through water (fording
streams, etc.).
Note
● For vehicles with the Start-Stop function and a manual gearbox, when
the engine is started, the clutch must be pressed.
● When the conditions for the Start-Stop function are not fulfilled, the in-
strument panel displays the Start-Stop indicator dimmed.
● If the steering wheel is turned more than 270°, it will not be possible to
start the vehicle again. To start the vehicle, straighten the steering wheel so
that it is turned less than 270°.

170Driving and the environment
let the vehicle roll with a gear engaged, for example, if you see a red light
ahead. The braking effect achieved in this way helps to reduce the wear of
brakes and tyres; emissions and fuel consumption are reduced to zero (dis-
connection due to inertia).
Change gear early to save energy
An effective way of saving fuel is to change up quickly through the gears.
Running the engine at high rpm in the lower gears uses an unnecessary
amount of fuel.
Manual gearbox: Change from first to second gear as quickly as possible.
We recommend that, whenever possible, you change to a higher gear upon
reaching 2000 rpm. Follow the “recommended gear” indication that ap-
pears on the instrument panel ⇒ page 58.
Avoid driving at high speed
We advise you not to drive at the top speed permitted by the vehicle. Fuel
consumption, exhaust emissions and noise levels all increase very rapidly
at higher speeds. Driving at moderate speeds will help to save fuel.
Avoid idling
It is worthwhile switching off the engine when waiting in a traffic jam, at lev-
el crossings or at traffic lights with a long red phase. The fuel saved after
only 30 - 40 seconds is greater than the amount of fuel needed to restart
the engine.
The engine takes a long time to warm up when it is idling. Mechanical wear
and pollutant emissions are also especially high during this initial warm-up
phase. It is therefore best to drive off immediately after starting the engine.
Avoid running the engine at high speed.
Periodic maintenance
Periodic maintenance work guarantees that, before beginning a journey,
you will not consume more than the required amount of fuel. A well-serviced
engine gives you the benefit of improved fuel efficiency as well as maxi-
mum reliability and an enhanced resale value.
A badly serviced engine can consume up to 10% more fuel than necessary. Avoid short journeys
To reduce the consumption and emission of polluting exhaust gases, the
engine and the exhaust gas filtration systems should reach the optimum
service temperature.
With the engine cold, fuel consumption is proportionally higher. The engine
does not warm up and fuel consumption does not normalise until having
driven approximately
four kilometres (2.5 miles). This is why we recommend
avoiding short trips whenever possible.
Maintain the correct tyre pressures
Bear in mind that keeping the tyres at an adequate pressure saves fuel. If
the tyre pressure is just one bar too low, fuel consumption can increase by
as much as 5%. Due to the greater rolling resistance, under-inflation also
increases tyre wear and impairs handling.
The tyre pressures should always be checked when the tyres are cold.
Do not use winter tyres all year round as they increase fuel consumption by
up to 10%.
Avoid unnecessary weight
Given that every kilo of extra weight will increase the fuel consumption, it is
advisable to always check the luggage compartment to make sure that no
unnecessary loads are being transported.
A roof rack is often left in place for the sake of convenience, even when it is
no longer needed. At a speed of 100-120 km/h (60-75 mph) your vehicle
will use about 12% more fuel as a result of the extra wind resistance caused
by the roof rack even when it is not in use.
Save electricity
The engine activates the alternator, which produces electricity. With the
need for electricity, fuel consumption is also increased. Because of this, al-
ways turn off electrical components when you do not need them. Examples
of components that use a lot of electricity are: the fan at high speeds, the
rear window heating or the seat heaters*.

194Checking and refilling levels
WARNING
All work on the engine or in the engine compartment, e.g. checking and
refilling fluids, involves the danger of injury and scalding as well as the
risk of accident or fire.
● Never open the bonnet if you see steam, smoke or coolant escaping
from the engine compartment. Otherwise, there is a risk of sustaining
burns. Wait until no more steam or coolant is emitted, then allow the en-
gine to cool before carefully opening the bonnet.
● Switch off the engine and remove the key from the ignition.
● Apply the handbrake and move the gear lever to neutral or selector
lever to position P.
● Keep children away from the vehicle.
● Never touch hot engine parts. There is a risk of burns.
● Never spill liquids on a hot engine or on a hot exhaust gas system.
This is a fire hazard.
● Avoid causing short-circuits in the electrical system, particularly at
the points where the jump leads are attached ⇒ page 242. The battery
could explode.
● Never touch the radiator fan. It is temperature controlled and could
start automatically, even when the engine has been switched off and the
key removed from the ignition!
● Do not unscrew the cap on the coolant expansion tank when the en-
gine is hot. If the coolant is hot, the cooling system will be pressurised!
● Protect face, hands and arms by covering the cap with a large, thick
cloth to protect against escaping coolant and steam.
● Always make sure you have not left any objects, such as cleaning
cloths and tools, in the engine compartment.
● If you have to work underneath the vehicle, you must use suitable
stands additionally to support the vehicle, there is a risk of accident!. A
hydraulic jack is insufficient for securing the vehicle and there is a risk of
injury.WARNING (Continued)
● If any work has to be performed when the engine is started or with
the engine running, there is an additional, potentially fatal, safety risk
from the rotating parts, such as the drive belts, alternator, radiator fan,
etc., and from the high-voltage ignition system. You should also observe
the following points:
–Never touch the electrical wiring of the ignition system.
– Ensure that jewellery, loose clothing and long hair do not get trap-
ped in rotating engine parts. Danger of death. Before starting any
work remove jewellery, tie back and cover hair, and wear tight-fitting
clothes.
– Never accelerate with a gear engaged without taking the necessary
precautions. The vehicle could move, even if the handbrake is ap-
plied. Danger of death.
● If work has to be carried out on the fuel system or on electrical com-
ponents, you must observe the following safety notes in addition to the
above warnings:
–Always disconnect the battery from the on-board network. The ve-
hicle must be unlocked when this is done, otherwise the alarm will be
triggered.
– Do not smoke.
– Never work near naked flames.
– Always have a fire extinguisher on hand.
CAUTION
When topping up service fluids, make sure not to mistake them. Using the
wrong fluids could cause serious malfunctions and engine damage!

Index
A
ABS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163Control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 69
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Acoustic warning . . . . . . . . . . . . . . . . . . . . . . . 138
Adaptive headlights . . . . . . . . . . . . . . . . . . . . . 100
AFS headlight bulbs . . . . . . . . . . . . . . . . . . . . . 235
Airbag covers . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 30
Front airbags . . . . . . . . . . . . . . . . . . . . . . . . 33
side airbags . . . . . . . . . . . . . . . . . . . . . . . . . 37
Air conditioner Climatronic . . . . . . . . . . . . . . . . . . . . . . . . . 133
General notes . . . . . . . . . . . . . . . . . . . . . . . 135
Air conditioning* . . . . . . . . . . . . . . . . . . . . . . . 130
Air outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Air recirculation Semi-automatic air conditioning . . . . . . . . 132
Air recirculation mode Climatronic . . . . . . . . . . . . . . . . . . . . . . . . . 135
Alarm system Switching off . . . . . . . . . . . . . . . . . . . . . . . . . 87
Alternator Warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 74
Anti-lock brake system . . . . . . . . . . . . . . . . . . . 163 Control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 69 Anti-theft alarm system . . . . . . . . . . . . . . . . . . . 87
Switching off . . . . . . . . . . . . . . . . . . . . . . . . . 87
Anti-theft wheel bolts . . . . . . . . . . . . . . . . . . . 219
Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Aquaplaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Aspects to note before setting off . . . . . . . . . . . . 8
ASR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
ASR (Traction control system) Control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 70
Audible warning . . . . . . . . . . . . . . . . . . . . . . . . . 19
Automatic anti-dazzle interior mirror Deactivating the anti-dazzle function . . . . 109
Automatic anti-dazzle interior mirror* Activating the anti-dazzle function . . . . . . 109
Automatic car washing tunnel . . . . . . . . . . . . . 175
Automatic gearbox . . . . . . . . . . . . . . . . . . . . . . 147 Kick-down feature . . . . . . . . . . . . . . . . . . . . 153
Selector lever positions . . . . . . . . . . . . . . . 151
Automatic lighting . . . . . . . . . . . . . . . . . . . . . . . 98
Automatic windscreen wiper/washer . . . . . . . 106
Auxiliary audio input connection: AUX . . . . . . 124
AUX input connection/USB* . . . . . . . . . . . . . . 124
B
Ball coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 Battery
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Winter conditions . . . . . . . . . . . . . . . . . . . . 207
Before setting off . . . . . . . . . . . . . . . . . . . . . . . . . 8
Belt tensioners . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Biodiesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Biodiesel fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Brake pads . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Brake servo . . . . . . . . . . . . . . . . . . . . . . . . 162, 167
Brake system . . . . . . . . . . . . . . . . . . . . . . . . . . 206 warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 71
Braking distance . . . . . . . . . . . . . . . . . . . . . . . 167
Bulb change double headlight . . . . . . . . . . . . . . . . . . . . 231
Single headlight bulb . . . . . . . . . . . . . . . . 229
Bulb changes General notes . . . . . . . . . . . . . . . . . . . . . . . 227
Bulb defect Control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 69
Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104, 138
269
Index