Page 125 of 219
Note■After coupling the trailer and connecting up the power socket, check the rear
lights on the trailer to ensure they work.■
If there is an error in the trailer lighting system, check the fuses in the fuse box
in the dashboard » page 192.
■
If you tow a trailer frequently, you should also have your car inspected between
service intervals.
■
The handbrake on the towing vehicle must be applied when coupling and un-
coupling the trailer.
Anti-theft alarm system
First read and observe the introductory information and safety warn-
ings
on page 120.
When the vehicle is locked, the alarm is activated as soon as the electrical con- nection to the trailer is interrupted.
Always switch off the anti-theft alarm system before a trailer is coupled or uncou- pled » page 35 .
Conditions for including a trailer in the anti-theft alarm system. The vehicle is factory-fitted with an anti-theft alarm system and towingequipment.
The trailer is electrically connected to the towing vehicle by means of the
trailer socket.
The electrical system of the vehicle and trailer is functional. The vehicle is locked with the vehicle key and the anti-theft alarm system isactivated.
Note
For technical reasons, trailers with rear LED lights cannot be connected to the an-
ti-theft alarm system.
122Driving
Page 195 of 219
Fuses in the dash panelFig. 153
Underside of the dash panel:
Distribution board cover.
Fig. 154
Schematic representation of the fuse box for vehicles with left-
hand steering/right-hand steering
First read and observe the introductory information and safety warn-
ings
on page 191.
The fuses are located on the left side of the dash panel behind a cover.
› Carefully remove the cover in the direction of the arrow
» Fig. 153.
› After the fuse has been replaced, replace the cover in the dash panel in the op-
posite direction of the arrow so that the guide lugs are guided into the open- ings of the dash panel. Close the cover until it clicks into place.
Fuse assignment in the dash panel
No.Consumer1S-contact2START-STOP, air-conditioning system3Instrument cluster, headlamp beam adjustmentNo.Consumer4Control unit for ABS, button for START STOP5Petrol engine: Speed regulating system6Reversing light (manual gearbox)7Ignition, engine control unit, automatic gearbox8Brake pedal switch, clutch pedal switch9Operating controls for the heating, control unit for air conditioning sys-
tem, parking aid, control unit for cornering lights, radiator fan, washing nozzles10Windscreen Wiper and Washer System11Mirror adjustment12Control unit for trailer detection13Automatic gearbox control unit14Motor for halogen projector headlights with cornering light function15PDA navigation system16Electrohydraulic power steering17Light switch power supply18Mirror heater19S-contact20Alarm21Reversing light, fog lights with the function CORNER22Operating controls for the heating, control unit for air conditioning sys-
tem, parking aid, mobile phone, instrument cluster, steering angle
sender, ESC, vehicle voltage control unit, multifunction steering wheel23Interior lighting, storage compartment and luggage compartment, side
lights24Central control unit25Seat heaters26Rear window wiper27Telephone preinstallation28Petrol engine: AKF valve, Diesel engine: Control flap29Injection, coolant pump30Fuel pump, ignition, Cruise control system, operation of PTC relay31Lambda probe 192Do-it-yourself
Page 196 of 219
No.Consumer32High pressure fuel pump, pressure valve33Engine control unit34Engine control unit, vacuum pump35Daytime running lights/radio for vehicles with START-STOP36Main beam37Rear fog light, DC/DC converter START-STOP38Fog lights39Air blower for heating40-41Not assigned42Rear window heater43Horn44Windscreen wipers45Central control unit for convenience system46Engine control unit, fuel pump47Cigarette lighter, power socket in the luggage compartment48ABS, START-STOP (DC/DC) converter ESP49Turn signal lights, brake lights50START-STOP (DC/DC) transformer, radio51Electrical power window (front and rear) - left side52Electrical power window (front and rear) - right side53Parking light = left side, electrical sliding/tilting roof54START-STOP (instrument cluster), alarm55Automatic gearbox control unit56Headlight cleaning system, parking light - right side57Left low beam, headlight range adjustment58Low beam on the right
Fuses in the engine compartmentFig. 155
Vehicle battery: Distribution board cover.
Fig. 156
Schematic representation of
fuse box in engine compartment
First read and observe the introductory information and safety warn-
ings on page 191.
› Press the securing clips on the fuse box cover together at the same time in the
direction of arrow
A
» Fig. 155 and remove the cover in the direction of arrow
B
.
› Release the fixtures in the openings
C
using a flat screwdriver and fold the
cover upwards in direction of arrow
D
.
Fuse assignment in engine compartment
No.Consumer1Alternator2Not assigned3Interior4Electrical auxiliary heating system 193Fuses and light bulbs
Page 209 of 219
Index
A
Abroad Driving abroad
109
Unleaded petrol109
ABS111
Warning light24
Accessories146
Adjusting Exterior mirrors
51
Seat53
Steering wheel95
Adjusting the seats124
Aerial150
See windows152
Airbag132
Deactivating137
Deactivating the front passenger airbag137
Deployment132
Front airbag134
Head airbag136
Modifications and damage to the airbag system 148
Side airbag
135
Airbag system132
Air conditioning Operation
81
Air conditioning system Air outlets
77
Climatronic83
Manual air conditioning system80
Air outlets77
Alarm35
Anti-theft alarm system35
Operation36
Trailer122
Antilock Braking System111
Armrest71
Ashtray66
ASR111
warning light23
Assist systems ABS
24, 111
ASR23, 111
Cruise Control System113
EDS and XDL111
ESC23, 110
Parking aid112
START-STOP115
Auto Check Control19
Automatic gearbox Selector lever-emergency unlocking
103
Starting-off and driving102
Tiptronic102
Automatic load deactivation171
Automatic transmission100
Kickdown102
Malfunction103
Selector lever lock101
Using the selector lever101
AUX94
Avoiding damage to the vehicle Driving through water
108
Avoiding damage to your vehicle108
B
Ball head Check fitting
119
Fitting118
Ready position118
Removing119
Belts127
Belt tensioners131
Bicycle carrier63
Bonnet Closing
161
Opening161
Boot Cover60
Emergency unlocking38
Fastening elements58
Fixing nets59
Folding hooks59
see Boot lid37
Unlocking the boot lid38
Boot lid37
Automatic locking37
Brake assist110
Brake booster99
Brake fluid167
Changing168
Checking167
Display messages20
Brakes Brake booster
99
Brake fluid167
Handbrake99
Indicator light20
Running in104
Braking Information on braking
98
Breakdown kit185
Bulbs In the tail light
198
Replacing194
Button in the driver's door Electrical power windows
38
C
Car care
144
Car computer see Multifunction display
13
Car park ticket holder68
Carrier65
Cavity protection153
Central locking button33
206Index