
158Driving
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.

174Driving and the environment
If the trailer has a 7-pin plug you will need to use an adapter cable. This is
available in any Technical Service.
Trailer weight/drawbar load
Never exceed the authorised trailer weight. If you do not load the trailer up
to the maximum permitted trailer weight, you can then climb correspond-
ingly steeper slopes.
The maximum trailer weights listed are only applicable for altitudes up to
1000 m above sea level. With increasing altitude the engine power and
therefore the vehicle climbing ability are impaired because of the reduced
air density. The maximum trailer weight has to be reduced accordingly. The
weight of the vehicle and trailer combination must be reduced by 10% for
every further 1000 m (or part thereof). The gross combination weight is the
actual weight of the laden vehicle plus the actual weight of the laden trailer.
When possible, operate the trailer with the maximum permitted drawbar
load on the ball joint of the towing bracket, but do not exceed the specified
limit.
The figures for trailer weights and drawbar loads that are given on the data
plate of the towing bracket are for certification purposes only. The correct
figures for your specific model, which may be lower than these figures for
the towing bracket, are given in the vehicle documentation or in ⇒ chap-
ter Technical Data.
Distributing the load
Distribute loads in the trailer so that heavy objects are as near to the axle as
possible. Loads carried in the trailer must be secured to prevent them mov-
ing.
Tyre pressure
Set tyre pressure to the maximum permissible pressure shown on the stick-
er on the inside of the fuel tank flap. Set the tyre pressure of the trailer tyres
in accordance with the trailer manufacturer's recommendations. 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.

179
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 176. 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 179, 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

180Vehicle 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.

227
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

229
If and when
Fuses in engine compartment above battery
Fig. 142 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 69
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Acoustic warning . . . . . . . . . . . . . . . . . . . . . . . 139
Adaptive headlights . . . . . . . . . . . . . . . . . . . . . 101
AFS headlight bulbs . . . . . . . . . . . . . . . . . . . . . 237
Airbag covers . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 30
Front airbags . . . . . . . . . . . . . . . . . . . . . . . . 33
side airbags . . . . . . . . . . . . . . . . . . . . . . . . . 37
Air conditioner Climatronic . . . . . . . . . . . . . . . . . . . . . . . . . 134
General notes . . . . . . . . . . . . . . . . . . . . . . . 136
Air conditioning . . . . . . . . . . . . . . . . . . . . . . . . 131
Air outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Air recirculation Semi-automatic air conditioning . . . . . . . . 133
Air recirculation mode Climatronic . . . . . . . . . . . . . . . . . . . . . . . . . 136
Alarm system Switching off . . . . . . . . . . . . . . . . . . . . . . . . . 88
Alternator Warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 74
Anti-lock brake system . . . . . . . . . . . . . . . . . . . 164 control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 69 Anti-theft alarm system . . . . . . . . . . . . . . . . . . . 88
Switching off . . . . . . . . . . . . . . . . . . . . . . . . . 88
Anti-theft wheel bolts . . . . . . . . . . . . . . . . . . . 221
Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Aquaplaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Aspects to note before setting off . . . . . . . . . . . . 8
ASR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
ASR (Traction control system) Control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 70
Audible warning . . . . . . . . . . . . . . . . . . . . . . . . . 19
Automatic anti-dazzle interior rear vision mirror Activating the anti-dazzle function . . . . . . 110
Deactivating the anti-dazzle function . . . . 110
Automatic car washing tunnel . . . . . . . . . . . . . 177
Automatic gearbox . . . . . . . . . . . . . . . . . . . . . . 148 Kick-down feature . . . . . . . . . . . . . . . . . . . . 154
Selector lever positions . . . . . . . . . . . . . . . 152
Automatic lighting . . . . . . . . . . . . . . . . . . . . . . . 99
Automatic windscreen wiper/washer . . . . . . . 107
AUX/USB input connection . . . . . . . . . . . . . . . 125
Auxiliary audio input connection (AUX) . . . . . 125
B
Ball coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Battery Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Winter conditions . . . . . . . . . . . . . . . . . . . . 209 Before setting off . . . . . . . . . . . . . . . . . . . . . . . . . 8
Biodiesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Biodiesel fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Brake pads . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Brake servo . . . . . . . . . . . . . . . . . . . . . . . . 163, 168
Brake system . . . . . . . . . . . . . . . . . . . . . . . . . . 208 warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 71
Braking distance . . . . . . . . . . . . . . . . . . . . . . . 168
Bulb change double headlight . . . . . . . . . . . . . . . . . . . . 233
Single headlight bulb . . . . . . . . . . . . . . . . 231
Bulb changes General notes . . . . . . . . . . . . . . . . . . . . . . . 229
Bulb defect Control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 69
Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105, 139
C
Car care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Car phone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Catalytic converter . . . . . . . . . . . . . . . . . . . . . . 169
CCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
269
Index

Central lock buttonLocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Unlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Central locking . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Automatic speed-dependent locking . . . . . 82
Emergency unlocking system . . . . . . . . . . . 82
Locking system for involuntary unlocking . 82
Selective unlocking system . . . . . . . . . . . . . 81
Unlocking system . . . . . . . . . . . . . . . . . . . . . 82
Cetane number . . . . . . . . . . . . . . . . . . . . . . . . . 194
Changing bulbs interior light and reading light . . . . . . . . . 241
Changing bulbs on tail lights . . . . . . . . . 239, 240
Changing gear see Manual gearbox . . . . . . . . . . . . . . . . . . 147
Changing gear in tiptronic mode . . . . . . . . . . 151
Changing single headlight bulbs Turn signal bulb . . . . . . . . . . . . . . . . . . . . . 231
Changing the AFS headlight bulbs Xenon lights . . . . . . . . . . . . . . . . . . . . . . . . 237
Changing the bulbs AFS headlight bulbs . . . . . . . . . . . . . . . . . . 237
fog light bulbs . . . . . . . . . . . . . . . . . . . . . . 238
luggage compartment light . . . . . . . . . . . . 242
number plate light . . . . . . . . . . . . . . . . . . . 241
Side turn signal lights . . . . . . . . . . . . . . . . 240
Changing the main headlight bulb turn signal lights . . . . . . . . . . . . . . . . . . . . 235
Changing the main headlight bulbs turn signal lights . . . . . . . . . . . . . . . . . . . . 237 Changing the single headlight bulbs
Dipped/main beam . . . . . . . . . . . . . . . . . . 232
Side light . . . . . . . . . . . . . . . . . . . . . . . . . . 232
Changing windscreen wiper blades . . . . . . . . 205
Chassis number . . . . . . . . . . . . . . . . . . . . . . . . 250
Checking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Checking battery electrolyte level . . . . . . . . . . 210
Checking engine oil level . . . . . . . . . . . . . . . . . 200
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 . . . . . . . . . . . . . . . . . . . . . . . . 124
Cleaning alloy wheel rims . . . . . . . . . . . . . . . . 181
Cleaning chrome . . . . . . . . . . . . . . . . . . . . . . . 180
Cleaning engine compartment . . . . . . . . . . . . 182
Cleaning steel wheel rims . . . . . . . . . . . . . . . . 181
Cleaning windows . . . . . . . . . . . . . . . . . . . . . . 179
Climatronic automatic mode . . . . . . . . . . . . . . . . . . . . . 135
controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
General notes . . . . . . . . . . . . . . . . . . . . . . . 136
manual mode . . . . . . . . . . . . . . . . . . . . . . . 135 Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Cloth seat covers cleaning . . . . . . . . . . . . . . . . 183
Cockpit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Coming Home function . . . . . . . . . . . . . . . . . . 102
Compartment for on-board documentation . . 120
Control
Exterior mirrors . . . . . . . . . . . . . . . . . . . . . . 111
control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Control lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Control lighting . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Controls Electric windows . . . . . . . . . . . . . . . . . . . . . . 93
Convenience closing Sliding/tilting sunroof . . . . . . . . . . . . . . . . . 97
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Convenience opening Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . 202, 203
Coolant level . . . . . . . . . . . . . . . . . . . . . . . . . . . 203 control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 73
Coolant loss . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Coolant temperature control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 73
Safety instructions . . . . . . . . . . . . . . . . . . . . 74
Correct adjustment of front head restraints . . . 13
Correct sitting position front passenger . . . . . . . . . . . . . . . . . . . . . . 11
Incorrect sitting position . . . . . . . . . . . . . . . 14
passenger . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Cruise control Control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 71
Cruise control system . . . . . . . . . . . . . . . . . . . . 159
270 Index