
157
Driving
To ensure that the system works properly, the sensors must be kept clean
and free of ice and snow.
WARNING
● The sensors have blind spots in which obstacles may not be detected.
● Always look out for small children and animals because the system
will not always detect them. Always pay attention when reversing to
avoid accidents.
● The parking aid is not a replacement for driver awareness. The driver
must take full responsibility for parking and other manoeuvres.
CAUTION
● Please note that low obstacles detected by the system may no longer be
registered by the sensors as the car moves closer, so the system will not
give any further warning. Certain kinds of obstacles (such as wire fences,
chains, thin posts or trailer draw bars, high kerbs or painted railings etc)
may not always be detected by the system, so there is a risk of damaging
the vehicle in such cases.
● In some cases, obstacles with uniform edges and bumps may not be de-
tected immediately by the system due to their geometry. Take special care
of this type of obstacle (corners, rectangular objects, etc.), as they can
cause damage to the vehicle.
● Be especially careful when manoeuvring into a corner between two per-
pendicular walls. Carefully watch the approach of the wall to the side of the
vehicle (using the mirrors).
● The parking aid system does not replace use of the mirrors for manoeu-
vres.
● External ultra-sonic sources (pneumatic drills, construction machinery,
other vehicles with PDC) may interfere with the operation of the system.
● Periodic cleaning of the sensors, take care not to damage or scratch
them. When cleaning with high pressure washers or steam cleaners, the
sensors should be sprayed for only a very short period and from a distance
of more than 10 cm.
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

173
Driving and the environment
Exterior mirrors
Check whether you can see enough of the road behind the trailer with the
standard rear vision mirrors. If this is not the case, you should have addi-
tional exterior mirrors fitted. Both exterior mirrors should be mounted on
hinged extension brackets. Adjust the mirrors to give sufficient vision to the
rear.
WARNING
Never transport people in a trailer. This could result in fatal accidents.
Note
● Towing a trailer places additional demands on the vehicle. We recom-
mend additional services between the normal inspection intervals if the ve-
hicle is used frequently for towing a trailer.
● Find out whether special regulations apply to towing a trailer in your
country.
Ball coupling of towing bracket*
The ball coupling is provided with instructions on fitting and removing the
ball coupling of the towing bracket.
WARNING
The towing bracket ball coupling must be stored securely in the luggage
compartment to prevent them being flung through the vehicle and caus-
ing injury.
Note
● By law, the ball coupling must be removed if a trailer is not being towed
if it obscures the number plate. Driving tips
Driving with a trailer always requires extra care.
Weight distribution
The weight distribution of a loaded trailer with an unladen vehicle is very
unfavourable. However, if this cannot be avoided, drive extra slowly to allow
for the unbalanced weight distribution.
Speed
The stability of the vehicle and trailer is reduced with increasing speed. For
this reason, it is advisable not to drive at the maximum permissible speed
in an unfavourable road, weather or wind conditions. This applies especially
when driving downhill.
You should always reduce speed immediately if the trailer shows the slight-
est sign of snaking. Never try to stop the “snaking” by increasing speed.
Always brake in due course. If the trailer has an overrun brake, apply the
brakes gently at first and then, firmly. This will prevent the jerking that can
be caused by locking of trailer wheels. Select a low gear in due course be-
fore going down a steep downhill. This enables you to use the engine brak-
ing to slow down the vehicle.
Reheating
At very high temperatures and during prolonged slopes, driving in a low
gear and high engine speed, always monitor the coolant temperature gauge
⇒ page 53.
Electronic Stability Control*
The ESC* system helps to stabilise the trailer in case of skidding or rocking.
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

177
Vehicle maintenance and cleaning
Vehicle paint maintenance
Regular waxing protects the paintwork. You need to apply wax to your vehicle if water does not form small drops
and run off the paintwork when it is clean.
Good quality hard wax products are available at your Technical Service.
Regular wax applications help to protect the paintwork from environmental
contaminants ⇒ page 174. It is also effective in protecting against minor
scratches.
Even if a wax solution is used regularly in the vehicle washing tunnel, it is
advisable to protect the paint with a hard wax coating at least twice a year.
Polishing the paintwork
Polishing brings back gloss to the paintwork. Polishing is only necessary if the paint has lost its shine, and the gloss can-
not be brought back by applying wax. Polishing products can be purchased
in your Technical Service.
The vehicle must be waxed after polishing if the polish used does not con-
tain wax compounds to seal the paint ⇒ page 177, Vehicle paint mainte-
nance.
CAUTION
To prevent damage to the paintwork:
● Do not use polishes and hard wax on painted parts with a matt finish or
on plastic parts.
● Do not polish your vehicle in a sandy or dusty environment. Caring for plastic parts
Solvents damage plastic parts.
If normal washing fails to clean plastic parts, clean them with approved
sol-
vent-free plastic cleaning and care products.
CAUTION
● The use of liquid air freshener directly over the air vents of the vehicle
may damage the plastic parts if the liquid is accidentally spilled.
● Cleaning products which contain solvents will damage the material.
Cleaning windows and exterior mirrors
Cleaning windows
– Moisten the windows with commercially available, alcohol
based glass cleaner.
– Dry the windows with a clean chamois leather or a lint-free
cloth.
Removing snow
– Use a small brush to remove snow from the windows and mir-
rors.
Removing ice
– Use a de-icer spray.
Use a clean cloth or chamois leather to dry the windows. The chamois leath-
ers used on painted surfaces are not suitable to clean windows because
they are soiled with wax deposits which could smear the windows.
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

178Vehicle maintenance and cleaning
If possible, use a de-icing spray to remove ice. If you use an ice scraper,
push it in one direction only without swinging it.
Use window cleaner or a silicone remover to clean rubber, oil, grease and
silicone deposits off.
Wax deposits can be removed with a special cleaner available in your Tech-
nical Services. Wax deposits on the windscreen could cause the wiper
blades to judder. Adding a window cleaner that dissolves wax to the wind-
screen washer fluid prevents wiper blades from juddering, but wax deposits
are not removed.
CAUTION
● Never use warm or hot water to remove snow and ice from windows and
mirrors. This could cause the glass to crack!
● The heating element for the rear window is located on the inner side of
the window. To prevent damage, do not put stickers over the heating ele-
ments on the inside of the window.
Cleaning windscreen wiper blades
Clean wiper blades improve visibility.
1. Use a soft cloth to remove dust and dirt from the windscreen wiper blades.
2. Use window cleaner to clean the windscreen wiper blades. Use a sponge or a cloth to remove stubborn dirt. Rubber seals maintenance
If rubber seals are well looked after, they will not freeze so
quickly.
1. Use a soft cloth to remove dust and dirt from the rubber seals.
2. Apply a specialist care product to the rubber seals.
The rubber strips on the doors, windows, bonnet and rear lid will remain
pliable and last longer if they are treated with a suitable care product (for
example silicone spray).
Caring for rubber seals will also prevent premature ageing and leaks. The
doors will be easier to open. If rubber seals are well looked after, they will
not freeze so quickly in winter.
Door lock cylinders
The door lock cylinders can freeze up in winter.
To de-ice the lock cylinders you should only use spray with lubricating and
anti-corrosive properties.
Cleaning chrome parts
1. Clean chrome parts with a damp cloth.
2. Polish chrome parts with a soft, dry cloth. If this does not provide satisfying results, use a specialist chrome cleaning
product. Chrome cleaning products will remove stains from the surface.

225
If and when
Fuses on left side of dash panel
Fuses
NumberConsumerAmps1Power steering/Engine operation/Flow meter7,5
2
Diagnostics/Heater/Autoclimate/Climatronic/
Electric anti-dazzle mirror/Navigator/Air condi-
tioning pressure switch/ Climate fan/AFS Control
unit/Coming home relay/Soundaktor/CCS
10
3Petrol engine control unit/Diesel engine control
unit/Relay coils/Engine operation/Bi-turbo fuel
control unit5
4ABS-ESC Control unit/RKA Switch/Gateway con-
trol unit/ESC Relay/Rotation sensor10
5Reverse light/Heating nozzles106Instrument panel57Retro fog light/Start-Stop relays7,5
8Paddle levers on steering wheel for automatic
gearbox2
9Headlight lever/Windscreen wiper switch1010BCM Electronic control unit power supply511Airbag control unit512Automatic gearbox/ LPG system1013Exterior mirror control514Left-hand AFS headlights1515Right-hand AFS headlights1516Vacant 17Number plate light518Clean pump7,519Electronic control unit520Turn signals/Brake lights15
NumberConsumerAmps21Lights control, instrument panel522Heated mirrors5
23Engine injection module/Rain sensor/Automatic
gearbox lever/Main petrol relay7,5
24Luggage compartment light, interior light, glove
compartment light, side lights10
25Parking aid526Towing hook 27Headlight control528Lambda probe10
29Vacuum pump/LPG power supply/High-pressure
pump15, 20, 20 a)
30Engine solenoid coils/Additional heating relay/
Pressure sensor/AKF Valve10A
31Petrol engine operation/Glow plugs/Relay coil/
Electric fan/Secondary water pump relay/Flow-
meter10
32Engine control unit15, 20,
30 b)
33Clutch switch sensor/Additional heating relay
coil/ Servo sensor5
34Fuel control unit / Vacuum pump1535Vacant 36Main beam with/without AFS10, 15 c)
37Kombi/Coming Home relay/Main beam head-
lights relay10
38Engine heater3039Vacant 4012 Volt Input/Cigarette lighter1541Heated seats control unit / Cup Holder25
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

227
If and when
Fuses in engine compartment above battery
Fig. 141 Fuses in engine
compartment
Non-metal fuses
NumberConsumerAmpsS1ABS ESC control unit25S2Electroblower climate heater/fan30S3Automatic gearbox control unit30S4Vacant S5Electronic control unit5S6Injection module30
Some of the electrical items listed in the table are only fitted on certain
models or are optional extras.
Please note that the above list contains all data at the time of going to
press, so it is subject to modifications. Bulb change
General notes
Before changing any bulb, first turn off the failed component.
Do not touch the glass part of the bulb with your bare hands. The finger-
prints left on the glass will vaporise as a result of the heat generated by the
bulb, causing a reduction in bulb life and condensation on the mirror sur-
face, thus reducing effectiveness.
A bulb must only be replaced by one of the same type. The type is indicated
on the bulb, either on the glass part or on the base.
Below, the light source used for all functions is broken down.
Double headlights - H7 Long Life
- H7
- W5W Long Life - PY 21W
Single headlight - H4 Long Life
- W5W Long Life - PY 21W
Dipped beam
Main beam
Side
Turn signal
Dipped/Main
Side
Turn signal
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

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

C
Car care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Car phone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Catalytic converter . . . . . . . . . . . . . . . . . . . . . . 168
CCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Central lock button Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Unlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Central locking . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Automatic speed dependent locking andunlocking system* . . . . . . . . . . . . . . . . . . 82
Locking system for involuntary unlocking . 82
Selective unlocking system* . . . . . . . . . . . . 81
Unlocking system* . . . . . . . . . . . . . . . . . . . . 82
Cetane number . . . . . . . . . . . . . . . . . . . . . . . . . 192
Changing bulbs interior light and reading light . . . . . . . . . 240
Changing bulbs on tail lights . . . . . . . . . . . . . 238
Changing gear see Manual gearbox . . . . . . . . . . . . . . . . . . 146
Changing gear in tiptronic mode . . . . . . . . . . 150
Changing single headlight bulbs Turn signal bulb . . . . . . . . . . . . . . . . . . . . . 229
Changing the AFS headlight bulbs Xenon lights . . . . . . . . . . . . . . . . . . . . . . . . 235
Changing the bulbs AFS headlight bulbs . . . . . . . . . . . . . . . . . . 235
fog light bulbs . . . . . . . . . . . . . . . . . . . . . . 236
luggage compartment light . . . . . . . . . . . . 241
number plate light . . . . . . . . . . . . . . . . . . . 239
Side turn signal lights . . . . . . . . . . . . . . . . 239 Changing the main headlight bulb
turn signal lights . . . . . . . . . . . . . . . . . . . . 233
Changing the main headlight bulbs turn signal lights . . . . . . . . . . . . . . . . . . . . 235
Changing the single headlight bulbs Dipped/main beam . . . . . . . . . . . . . . . . . . 230
Side light . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Changing windscreen wiper blades . . . . . . . . 203
Chassis number . . . . . . . . . . . . . . . . . . . . . . . . 248
Checking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Checking battery electrolyte level . . . . . . . . . . 208
Checking engine oil level . . . . . . . . . . . . . . . . . 198
Child safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Child seat Categorisation in groups . . . . . . . . . . . . . . . 44
Group 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Group 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Group 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Groups 0 and 0+ . . . . . . . . . . . . . . . . . . . . . . 44
Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . 42
Securing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Child seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 ISOFIX system . . . . . . . . . . . . . . . . . . . . . . . . 48
on the front passenger seat . . . . . . . . . . . . . 30
Top Tether system . . . . . . . . . . . . . . . . . . . . 49
Cigarette lighter . . . . . . . . . . . . . . . . . . . . . . . . 123
Cleaning alloy wheel rims . . . . . . . . . . . . . . . . 179
Cleaning chrome . . . . . . . . . . . . . . . . . . . . . . . 178
Cleaning engine compartment . . . . . . . . . . . . 180
Cleaning steel wheel rims . . . . . . . . . . . . . . . . 179
Cleaning windows . . . . . . . . . . . . . . . . . . . . . . 177 Climatronic
automatic mode . . . . . . . . . . . . . . . . . . . . . 134
controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
General notes . . . . . . . . . . . . . . . . . . . . . . . 135
manual mode . . . . . . . . . . . . . . . . . . . . . . . 134
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Cloth seat covers cleaning . . . . . . . . . . . . . . . . 181
Cockpit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Coming Home function . . . . . . . . . . . . . . . . . . 101
Compartment for on-board documentation . . 119
Control Exterior mirrors . . . . . . . . . . . . . . . . . . . . . . 110
control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Control lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Control lighting . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Controls Electric windows . . . . . . . . . . . . . . . . . . . . . . 92
Convenience closing Sliding/tilting sunroof . . . . . . . . . . . . . . . . . 95
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Convenience opening Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . 200, 201
Coolant level . . . . . . . . . . . . . . . . . . . . . . . . . . . 201 control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 74
Coolant loss . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Coolant temperature Safety instructions . . . . . . . . . . . . . . . . . . . . 74
Correct adjustment of front head restraints . . . 13
270 Index