
164Driving
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. Cruise speed* (Cruise control system)
Description
The cruise control system is able to maintain the set speed
in the range of 30 km/h (20 mph) to 180 km/h (110 mph).
Once the speed setting has been saved, you may take your foot off the ac-
celerator.
WARNING
It could be dangerous to use the cruise control system if it is not possible
to drive at constant speed.
● Do not use the cruise control system when driving in dense traffic, on
roads with lots of bends or on roads with poor conditions (with ice, slip-
pery surfaces, loose grit or gravel), as this could cause an accident.
● Always switch the cruise control system off after using it in order to
avoid an involuntary use.
● It is dangerous to use a set speed which is too high for the current
road, traffic or weather conditions. Risk of accident.
Note
The cruise control cannot maintain a constant speed when descending
downhill. The vehicle will accelerate due to its own weight. Use the foot
brake to slow the vehicle.

179
Driving 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.
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

184Vehicle 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 181. 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 184, 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.

185
Vehicle 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.
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

232If 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, 20a)
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

234If and when
Fuses in engine compartment above battery
Fig. 150 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

Index
A
ABS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 71
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Acoustic warning . . . . . . . . . . . . . . . . . . . . . . . 145
Adaptive headlights . . . . . . . . . . . . . . . . . . . . . 103
AFS headlight bulbs . . . . . . . . . . . . . . . . . . . . . 242
Airbag covers . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 31
Front airbags . . . . . . . . . . . . . . . . . . . . . . . . 34
side airbags . . . . . . . . . . . . . . . . . . . . . . . . . 38
Air conditioner Climatronic . . . . . . . . . . . . . . . . . . . . . . . . . 140
General notes . . . . . . . . . . . . . . . . . . . . . . . 142
Air conditioning* . . . . . . . . . . . . . . . . . . . . . . . 137
Air outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Air recirculation Semi-automatic air conditioning . . . . . . . . 139
Air recirculation mode Climatronic . . . . . . . . . . . . . . . . . . . . . . . . . 142
Alarm system Switching off . . . . . . . . . . . . . . . . . . . . . . . . . 90
Alternator Warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 76
Anti-lock brake system . . . . . . . . . . . . . . . . . . . 169 control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 71 Anti-theft alarm system . . . . . . . . . . . . . . . . . . . 90
Switching off . . . . . . . . . . . . . . . . . . . . . . . . . 90
Anti-theft wheel bolts . . . . . . . . . . . . . . . . . . . 226
Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Aquaplaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Ashtray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Aspects to note before setting off . . . . . . . . . . . . 8
ASR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
ASR (Traction control system) Control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 72
Audible warning . . . . . . . . . . . . . . . . . . . . . . . . . 20
Automatic anti-dazzle interior mirror Deactivating the anti-dazzle function . . . . 112
Automatic anti-dazzle interior mirror* Activating the anti-dazzle function . . . . . . 112
Automatic car washing tunnel . . . . . . . . . . . . . 182
Automatic gearbox . . . . . . . . . . . . . . . . . . . . . . 154 Kick-down feature . . . . . . . . . . . . . . . . . . . . 160
Selector lever positions . . . . . . . . . . . . . . . 158
Automatic lighting . . . . . . . . . . . . . . . . . . . . . . 101
Automatic windscreen wiper/washer . . . . . . . 109
AUX/USB input connection . . . . . . . . . . . . . . . 127
Auxiliary audio input connection (AUX) . . . . . 127
B
Ball coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . 179 Battery
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Winter conditions . . . . . . . . . . . . . . . . . . . . 214
Before setting off . . . . . . . . . . . . . . . . . . . . . . . . . 8
Belt tensioners . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Biodiesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Biodiesel fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Brake pads . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Brake servo . . . . . . . . . . . . . . . . . . . . . . . . 168, 173
Brake system . . . . . . . . . . . . . . . . . . . . . . . . . . 213 warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 73
Braking distance . . . . . . . . . . . . . . . . . . . . . . . 173
Bulb change double headlight . . . . . . . . . . . . . . . . . . . . 238
Single headlight bulb . . . . . . . . . . . . . . . . 236
Bulb changes General notes . . . . . . . . . . . . . . . . . . . . . . . 234
Bulb defect Control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 71
Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107, 145
271
Index

C
Car care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Car phone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Catalytic converter . . . . . . . . . . . . . . . . . . . . . . 174
CCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Central lock button Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Unlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Central locking . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Automatic speed dependent locking andunlocking system* . . . . . . . . . . . . . . . . . . 84
Emergency unlocking system . . . . . . . . . . . 85
Locking system for involuntary unlocking . 84
Selective unlocking system* . . . . . . . . . . . . 83
Unlocking system* . . . . . . . . . . . . . . . . . . . . 84
Cetane number . . . . . . . . . . . . . . . . . . . . . . . . . 199
Changing bulbs interior light and front reading lights . . . . 247
Changing gear see Manual gearbox . . . . . . . . . . . . . . . . . . 153
Changing gear in tiptronic mode . . . . . . . . . . 157
Changing rear lights on the rear lid . . . . . . . . . . . . . . . . . . . . . . . 245
on the wing . . . . . . . . . . . . . . . . . . . . . . . . . 244
Changing single headlight bulbs Turn signal bulb . . . . . . . . . . . . . . . . . . . . . 236
Changing the AFS headlight bulbs Xenon lights . . . . . . . . . . . . . . . . . . . . . . . . 242
Changing the bulbs AFS headlight bulbs . . . . . . . . . . . . . . . . . . 242
fog light bulbs . . . . . . . . . . . . . . . . . . . . . . 243 Luggage compartment light . . . . . . . . . . . 248
number plate light . . . . . . . . . . . . . . . . . . . 247
Side turn signal lights . . . . . . . . . . . . . . . . 246
Changing the main headlight bulb turn signal lights . . . . . . . . . . . . . . . . . . . . 240
Changing the main headlight bulbs turn signal lights . . . . . . . . . . . . . . . . . . . . 242
Changing the single headlight bulbs Dipped/main beam . . . . . . . . . . . . . . . . . . 237
Side light . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Changing windscreen wiper blades . . . . . . . . 210
Chassis number . . . . . . . . . . . . . . . . . . . . . . . . 256
Checking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Checking battery electrolyte level . . . . . . . . . . 215
Checking engine oil level . . . . . . . . . . . . . . . . . 205
Child safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Child seat Categorisation in groups . . . . . . . . . . . . . . . 45
Group 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Group 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Group 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Groups 0 and 0+ . . . . . . . . . . . . . . . . . . . . . . 45
Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . 43
Securing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Child seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 ISOFIX system . . . . . . . . . . . . . . . . . . . . . . . . 49
on the front passenger seat . . . . . . . . . . . . . 31
Top Tether system . . . . . . . . . . . . . . . . . . . . 50
Cigarette lighter . . . . . . . . . . . . . . . . . . . . . . . . 126
Cleaning alloy wheel rims . . . . . . . . . . . . . . . . 186
Cleaning chrome . . . . . . . . . . . . . . . . . . . . . . . 185
Cleaning engine compartment . . . . . . . . . . . . 187 Cleaning steel wheel rims . . . . . . . . . . . . . . . . 186
Cleaning windows . . . . . . . . . . . . . . . . . . . . . . 184
Climatronic
automatic mode . . . . . . . . . . . . . . . . . . . . . 141
controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
General notes . . . . . . . . . . . . . . . . . . . . . . . 142
manual mode . . . . . . . . . . . . . . . . . . . . . . . 141
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Cloth seat covers cleaning . . . . . . . . . . . . . . . . 188
Cockpit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Coming Home function . . . . . . . . . . . . . . . . . . 104
Compartment for on-board documentation . . 122
Control Exterior mirrors . . . . . . . . . . . . . . . . . . . . . . 113
control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Control lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Control lighting . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Controls Electric windows . . . . . . . . . . . . . . . . . . . . . . 95
Convenience closing Sliding/tilting sunroof . . . . . . . . . . . . . . . . . 99
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Convenience opening Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . 207, 208
Coolant level . . . . . . . . . . . . . . . . . . . . . . . . . . . 208 control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 75
Coolant loss . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Coolant temperature control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 75
Safety instructions . . . . . . . . . . . . . . . . . . . . 76
Correct adjustment of front head restraints . . . 13
272 Index