
Fuses and light bulbs
192
Fuse assignment in the dash panelFig. 157 Schematic representation of the fuse box for vehicles with left-hand steering / right-
hand steeringCertain electrical components are only standard on certain vehicle model versions or
only suppliable as optional equipment for certain models.No.
Power consumer
Amperes
1
Not assigned
2
Start/stop
5
3
Instrument cluster, headlamp beam adjustment
10
4
ABS control unit
5
5
Petrol engine: Cruise control system
5
6
Reversing light (manual gearbox)
10
7
Ignition
15
Engine control unit, automatic gearbox
7,5
8
Brake pedal switch, coolant fan
5
9
Operating controls for the heating, control unit for air condi-
tioning system, parking aid, control unit for cornering lights,
coolant fan
5
10
Not assigned
11
Mirror adjustment
5
12
Control unit for trailer detection
5
13
Control unit for automatic gearbox
5
14
Motor for halogen projector headlights with cornering light
function
10
15
Navigation PDA
5
16
Electrohydraulic power steering
5
17
Radio
10
Daylight driving lights
7,5
18
Mirror heater
5
19
S-contact
5
20
Engine control unit
5
Engine control unit
7,5
Fuel pump relay
15
Fuel pump control unit
15
21
Reversing light, fog lights with the function “CORNER”
10
22
Operating controls for the heating, control unit for air condi-
tioning system, parking aid, mobi le phone, instrument cluster,
steering angle sender , ESP, vehicle voltage control unit, multi-
function steering wheel
7,5
23
Interior lighting, storage compartment and luggage compart-
ment, side lights
15
24
Central control unit of the vehicle
5
25
Seat heaters
20
26
Rear window wiper
10
27
Not assigned
28
Petrol engine: AKF valve, petrol engine: Control flap
10
29
Injection, water pump
10
No.
Power consumer
Amperes
s16g.4.book Page 192 Wednesda y, February 10, 2010 3:53 PM

Fuses and light bulbs
194
– Release the fixtures in the openings using a flat screwdriver and fold the cover
upwards in direction of arrow .
– Find out which fuse belongs to th e component which is not operating.
– Defect fuses can be detected by their melted metal strips. Replace the defect fuse by a new fuse of the same ampere number.
Caution
Never attempt to “repair” fuses and also do not replace them with a fuse of a higher
amperage - risk of fire! This may also cause damage at an other part of the electrical
system.
Have the electrical system checked as quickl y as possible by a specialist garage if a
newly inserted fuse blows again after a short time.Note
We recommend that you have these fuses replaced by a specialist garage.Fuse assignment at the battery (manual gearbox, automatic gearbox DSG)Certain electrical components are only standard on certain vehicle model versions or
only suppliable as optional equipment for certain models.
Caution
Observe the following guidelines in “Replacing fuses at the battery (manual
gearbox, automatic gearbox DSG)” on page 193.
Note
The fuses 1 - 7 can be replac ed by a specialist garage.
AC
AD
Fig. 159 Schematic representation of
fuse assignment at battery
No.
Power consumer
Amperes
1
Dynamo
175
2
Not assigned
3
Interior
80
4
Electrical auxiliary heating system
60
5
Interior
40
6
Glow plugs, coolant fan
50
7
Electrohydraulic power steering
50
8
ABS or TCS or ESP
25
9
The radiator fan
30
10
The radiator fan
5
11
ABS or TCS or ESP
40
12
Central control unit
5
13
Automatic gearbox
electrical auxiliary heating system
5
40
s16g.4.book Page 194 Wednesda y, February 10, 2010 3:53 PM

Fuses and light bulbs195
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Praktik
Technical Data
Replace fuses at the battery (automatic gearbox)Fig. 160 The battery: Open the posi tive terminal cover / fuse cover– Open the positive terminal cover (+) fig. 160 .
– Press onto the interlocks of the fuse covers fig. 160 on the right and open the
covers.
– Press together the interlocks of the fuse cover simultaneously and push out the
cover in the direction of the arrow.
– Find out which fuse belongs to th e component which is not operating page 194,
“Fuse assignment at the battery (ma nual gearbox, automatic gearbox DSG)”.
– Defect fuses can be detected by their melted metal strips. Replace the defect fuse by a new fuse of the same ampere number.
Caution
Never attempt to “repair” fuses and also do not replace them with a fuse of a higher
amperage - risk of fire! This may also cause damage at an other part of the electrical
system.
Have the electrical system checked as quickl y as possible by a specialist garage if a
newly inserted fuse blows again after a short time.Note
We recommend that you have these fuses replaced by a specialist garage.
Some vehicles are only fitted with the cover fig. 160 on the right.
Fuse assignment at the battery (automatic gearbox)Certain electrical components are only stan dard on certain vehicle model versions or
only suppliable as optional equipment for certain models.
AAABAB
No.
Power consumer
Amperes
1
Dynamo
175
2
Interior
80
3
Electrical auxiliary heating system
60
4
ESP
40
5
Electrohydraulic power steering
50
6
Glow plugs
50
7
ESP
25
8
The radiator fan
30
9
Air conditioning system
5
10
ABS
40
11
Central control unit
5
12
Automatic gearbox
electrical auxiliary heating system
5
40
Fig. 161 Schematic representation of
fuse assignment at battery
s16g.4.book Page 195 Wednesda y, February 10, 2010 3:53 PM

Index223
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Praktik
Technical Data
Exterior mirror heater . . . . . . . . . . . . . . . . . . . . . . . . . 55
FFastening elements . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
First-aid box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Fixing net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Fog lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48, 198
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Fog lights with the function CORNER . . . . . . . . . . . 48
Folding seats forwards . . . . . . . . . . . . . . . . . . . . . . . . 60
Force limiter of the power windows . . . . . . . . . . . . 44
Front airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Front armrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Front headlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158 Diesel fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Petrol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Fuel consumption . . . . . . . . . . . . . . . . . . . . . . . 20, 142 Saving energy . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Fuel reserve Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Full wheel trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Fuse Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
GGearbox mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
General view Cockpit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Glow plug system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
GSM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101HHalogen projector headlights with cornering light function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Handbrake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Hazard warning light system . . . . . . . . . . . . . . . . . . . 49 Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Head airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Head restraint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Headlight cleaning system . . . . . . . . . . . . . . . . . . . . . 54
Headlight flasher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Headlights Fog lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Headlight cleaning system . . . . . . . . . . . . . . . . . . 54
Heated windscreen washer nozzles . . . . . . . . . . . . . 53
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Heating the front seats . . . . . . . . . . . . . . . . . . . . . . . . 59
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9IIgnition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Ignition lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Immobiliser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Information display . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Instrument cluster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Interior light
Luggage compartment . . . . . . . . . . . . . . . . . . . . . 52
Interior lighting front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Interior monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Intermittent wiping . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
ISOFIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
ISOFIX system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
JJacking points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Jump-starting . . . . . . . . . . . . . . . . . . . . . . . . . . . 186, 187KKey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34LLashing eyes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Leather care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Lifting jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Lighting of the interior of the vehicle front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Lights converting/masking over . . . . . . . . . . . . . . . . . 146
Range adjustment . . . . . . . . . . . . . . . . . . . . . . . . . 49
s16g.4.book Page 223 Wednesda y, February 10, 2010 3:53 PM

Index225
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Praktik
Technical Data
Remote control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Synchronisation process . . . . . . . . . . . . . . . . . . . 41
Removing seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Replacing bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Replacing fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Replacing the wiper blades . . . . . . . . . . . . . . . . . . . . 54
Roof aerial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Running in the car . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
SSafe securing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Safety information Engine compartment . . . . . . . . . . . . . . . . . . . . . 162
Saving electrical energy . . . . . . . . . . . . . . . . . . . . . . 142
Seat belt height adjuster . . . . . . . . . . . . . . . . . . . . . . 115
Seat belt warning light . . . . . . . . . . . . . . . . . . . . . . . . 115
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
fastening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Height adjustment . . . . . . . . . . . . . . . . . . . . . . . . 115
Safety information . . . . . . . . . . . . . . . . . . . . . . . . 114
taking off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Selector lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Selector lever positions . . . . . . . . . . . . . . . . . . . . . . . . 95
Selector lever-emergency unlocking . . . . . . . . . . . . 98
Service Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Service Interval Display . . . . . . . . . . . . . . . . . . . . . . . . 17 Setting temperature
Air conditioning system . . . . . . . . . . . . . . . . . . . . 82
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Setting the clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Shifting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Side airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Side lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Snow chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Spare wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Stability programme (ESP) . . . . . . . . . . . . . . . . . . . . 133
Starting the engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 Diesel engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Petrol engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Static separation net . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Steering force assistance . . . . . . . . . . . . . . . . . . . . . . 137
Storage compartment Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Storage compartments . . . . . . . . . . . . . . . . . . . . . . . . 73
Storage facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Sun visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Switching lights on and off . . . . . . . . . . . . . . . . . . . . . 46
Switching off the engine . . . . . . . . . . . . . . . . . . . . . . . 89
TTaking care of your vehicle . . . . . . . . . . . . . . . . . . . . 151
TCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Telephone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Temperature outside . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 the first 1 500 kilometres . . . . . . . . . . . . . . . . . . . . . 141
The roof luggage rack system . . . . . . . . . . . . . . . . . . . 70
Tiptronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Tourist light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Towing a trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Towing eye
front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Towing protection monitoring . . . . . . . . . . . . . . . . . . 42
towing vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Tow-starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Tow-starting and towing vehicle Automatic gearbox . . . . . . . . . . . . . . . . . . . . . . . . . 99
Traction control system (TCS) . . . . . . . . . . . . . . . . 134 Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 General Maintenance . . . . . . . . . . . . . . . . . . . . 148
Transporting children . . . . . . . . . . . . . . . . . . . . . . . . 126
Tread depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Turn signal light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Two-way radio systems . . . . . . . . . . . . . . . . . . . . . . 101
Tyre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Tyre inflation pressure Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Tyre pressure monitoring system . . . . . . . . . . . . . 138
Tyre repair kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Tyres Winter tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
s16g.4.book Page 225 Wednesda y, February 10, 2010 3:53 PM