
Seats and storage compartments 176
Vehicle socketsMaximum power consumption
The maximum capacity of each socket must not be exceeded. The power 
consumption is indicated on the rating plate of each appliance.
Where two or more appliances are connected at the same time, the total 
rating of all the connected devices must never exceed 190 Watts  Ÿ.
12 volt socket
The 12 Volt socket will only work with the ignition on.
Using electrical appliances with the engine stopped and the ignition 
switched on will drain the battery. Therefore, electrical consumers connected 
to the socket must only be used when the engine is running.
To prevent voltage variations from causing damage, switch off the electrical 
consumer connected to the 12 Volt socket before switching the ignition on or 
off and before starting the engine.
12 Volt sockets can be found in the following locations in the vehicle:
 xCompartment in the centre of the centre console.
 xCompartment in the front centre console.
 xStorage compartment in the front central armrest.
 xRear centre console  Ÿfig. 126.
 xAt the rear right of the luggage compartment.
230 Volt Euro socket*
The socket only works when the engine is running  Ÿ.
Connecting an electrical appliance: Plug the appliance into the socket as far 
as possible to unlock the built-in child safety device. The current only flows 
when the child safety device is unlocked.
Fig. 126  Centre console, 
rear section: 12 volt 
socket.
Fig. 127  Rear centre 
console: 230 Volt Euro 
socket.
SocketMaximum power consumption
12 Volts120 Watts
230 Volts150 Watts (300 Watt peak) 

If and when371
Safety FirstOperating instructionsPractical tipsTe c h n i c a l  D a t a
Starting assistance
Introduction
If the engine fails to start because of a discharged battery, the battery of 
another vehicle can be used to start the engine. Before starting, check the 
magic eye on the battery  Ÿpage 318.
For starting assistance, jump lead cables conforming to the standard DIN 
72553 are required (see the cable manufacturer instructions). The jump lead 
cable must be at least 25 mm
2 in section (0.038 inches2) for petrol engines, 
and 35 mm2 (0.054 inches2) for diesel engines.
For vehicles whose battery is not in the engine compartment, the jump leads 
should only be connected to the starting assistance connection points in the 
engine compartment.
Additional information and warnings:
 xStarter assist systems (Start-Stop function)  Ÿpage 221
 xWorking in the engine compartment  Ÿpage 304
 xSelective Catalytic Reduction (AdBlue)  Ÿpage 300
 xVehicle battery  Ÿpage 318
WARNING
Incorrect use of jump leads and incorrectly jump starting could cause the 
battery to explode resulting in serious injury. Please observe the following 
rules to minimise the risk of a battery explosion:
 xAll work involving the vehicle battery and electrical system can cause 
corrosion, fire and serious electric shocks. Always read and take into 
account the safety warnings and standards before beginning work on the 
battery  Ÿpage 318, “Vehicle battery”.
 xThe battery providing current must have the same voltage (12V) and 
approximately the same capacity (see markings on battery) as the flat 
battery.
 xNever charge a frozen or recently thawed battery. A flat battery can 
freeze at temperatures around 0°C (+32 °F).
 xIf a battery is frozen and/or has been frozen then it must be replaced.
 xA highly explosive mixture of gases is released when the battery is 
being charged. Always keep lit cigarettes, open flames, sparks and fire far 
from the battery. Never use a mobile telephone when connecting and 
removing the jump leads.
 xCharge the battery only in well ventilated areas given that when the 
battery is charged by outside assistance, it creates a mix of highly explo-
sive gases.
 xJump leads should never enter into contact with moving parts in the 
engine compartment.
 xNever switch the positive and negative poles or connect the jump leads 
incorrectly.
 xNote the instructions provided by the manufacturer of the jump leads.
Caution
To avoid considerable damage to the vehicle electrical system, note the 
following carefully:
 xIf the jump leads are incorrectly connected, this could result in a short 
circuit.
 xThe vehicles must not touch each other, otherwise electricity could flow as 
soon as the positive terminals are connected.
WARNING (continued) 

Index 394
Anti-trap function
Electric windows  . . . . . . . . . . . . . . . . . . . . .  104
Panorama sliding sunroof  . . . . . . . . . . . . .  108
Sunshade . . . . . . . . . . . . . . . . . . . . . . . . . . .  108
Armrests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  145
Ashtray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  173
Assist systems
Anti-lock brake system (ABS) . . . . . . . . . . .  216
Auto Hold . . . . . . . . . . . . . . . . . . . . . . . . . . .  222
Braking assist  . . . . . . . . . . . . . . . . . . . . . . .  217
CCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  239
Cruise control  . . . . . . . . . . . . . . . . . . . . . . .  239
DCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  243
Dynamic chassis control . . . . . . . . . . . . . . .  243
Electronic stability programme (ESP)  . . . .  216
Optical parking system . . . . . . . . . . . . . . . .  227
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . .  229
Park assist . . . . . . . . . . . . . . . . . . . . . . . . . .  226
Park Assist system  . . . . . . . . . . . . . . . . . . .  229
Parking sensor system  . . . . . . . . . . . . . . . .  226
Rear Assist . . . . . . . . . . . . . . . . . . . . . . . . . .  234
Rear assist system  . . . . . . . . . . . . . . . . . . .  234
Start assist . . . . . . . . . . . . . . . . . . . . . . . . . .  222
Start-Stop . . . . . . . . . . . . . . . . . . . . . . . . . . .  223
Traction control system (TCS) . . . . . . . . . . .  218
Traction control when accelerating (TCS)  .  217
Tyre monitoring indicator . . . . . . . . . . . . . .  248
Assistance systems
Electronic differential lock system (EDS) . .  217
Assisted braking systems . . . . . . . . . . . . . . . . .  216
Auto Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  222Automatic belt retainer . . . . . . . . . . . . . . . . . . . .  27
Automatic car wash . . . . . . . . . . . . . . . . . . . . . .  270
Switching Auto Hold off  . . . . . . . . . . . . . . .  223
Switching the start assist off  . . . . . . . . . . .  223
Automatic consumer disconnection  . . . . . . . .  321
Automatic dipped beam control  . . . . . . . . . . .  117
Automatic gearbox  . . . . . . . . . . . . . . . . . . . . . .  201
Changing gear . . . . . . . . . . . . . . . . . . . . . . .  205
Driving  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  207
DSG automatic gearbox  . . . . . . . . . . . . . . .  207
Ignition key lock  . . . . . . . . . . . . . . . . . . . . .  197
Kickdown system  . . . . . . . . . . . . . . . . . . . .  207
Launch-Control programme  . . . . . . . . . . . .  207
Malfunction . . . . . . . . . . . . . . . . . . . . . . . . .  208
Manually unlocking the gear selection lever  . .
352
Please also see "Changing gears" . . . . . . .  201
See "Automatic gearbox" . . . . . . . . . . . . . .  201
Towing  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  376
Auxiliary heater . . . . . . . . . . . . . . . . . . . . . 187, 298
Automatic off . . . . . . . . . . . . . . . . . . . . . . . .  294
Programming . . . . . . . . . . . . . . . . . . . . . . . .  189
Remote control  . . . . . . . . . . . . . . . . . . . . . .  188
Remote control range  . . . . . . . . . . . . . . . . .  189
Remote control: replacing the battery . . . .  189
Switching off  . . . . . . . . . . . . . . . . . . . . . . . .  187
Switching on  . . . . . . . . . . . . . . . . . . . . . . . .  187
Things to note  . . . . . . . . . . . . . . . . . . . 188, 190
User instructions . . . . . . . . . . . . . . . . . . . . .  190
Auxiliary heater remote control
Replacing the battery  . . . . . . . . . . . . . . . . .  189AUX-IN connection  . . . . . . . . . . . . . . . . . . . . . .  162
Axle loads  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15
B
BAS
See "Braking assist systems"  . . . . . . . . . .  217
Battery
Discharge  . . . . . . . . . . . . . . . . . . . . . . . . . .  191
Discharging . . . . . . . . . . . . . . . . . . . . . . . . .  346
See Vehicle battery . . . . . . . . . . . . . . . . . . .  318
Battery acid . . . . . . . . . . . . . . . . . . . . . . . . . . . .  320
Before starting out  . . . . . . . . . . . . . . . . . . . . . . . .  7
Belt height adjustment . . . . . . . . . . . . . . . . . . . .  26
Belt tension device . . . . . . . . . . . . . . . . . . . . . . .  27
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
Service and disposal  . . . . . . . . . . . . . . . . . .  27
Belt tension limiter  . . . . . . . . . . . . . . . . . . . . . . .  27
Bicycle carrier
Installing a bicycle carrier  . . . . . . . . . . . . .  262
Maximum load  . . . . . . . . . . . . . . . . . . . . . .  262
Biodiesel  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  299
Bonnet
Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  307
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . .  307
Bottle capacity
Windscreen washer water bottle  . . . . . . . .  129
Bottle holders  . . . . . . . . . . . . . . . . . . . . . . . . . .  171
Brake  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  210
Brake servo  . . . . . . . . . . . . . . . . . . . . . . . . .  215
Electronic parking brake . . . . . . . . . . . . . . .  212 

Index399
Panoramic sliding roof  . . . . . . . . . . . . . . . . 351
Passenger side door  . . . . . . . . . . . . . . . . . . 349
Sliding doors  . . . . . . . . . . . . . . . . . . . . . . . . 349
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350
Engine
Noises . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Running-in  . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Engine and ignition . . . . . . . . . . . . . . . . . . . . . . 195
12 Volt sockets  . . . . . . . . . . . . . . . . . . . . . . 175
Ignition lock . . . . . . . . . . . . . . . . . . . . . . . . . 196
Immobiliser  . . . . . . . . . . . . . . . . . . . . . . . . . 200
Pre-heating . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Starting engine with KESSY  . . . . . . . . . . . . 197
Starting the engine  . . . . . . . . . . . . . . . . . . . 198
Stopping the engine with KESSY  . . . . . . . . 199
Unauthorised vehicle key  . . . . . . . . . . . . . . 196
Engine compartment . . . . . . . . . . . . . . . . . . . . . 304
Engine coolant . . . . . . . . . . . . . . . . . . . . . . . 313
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
Preparation  . . . . . . . . . . . . . . . . . . . . . . . . . 306
Vehicle battery . . . . . . . . . . . . . . . . . . . . . . . 318
Water box . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Engine coolant . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Checking the level . . . . . . . . . . . . . . . . . . . . 315
Filler  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
G 12 plus-plus  . . . . . . . . . . . . . . . . . . . . . . . 314
Refilling  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Specifications  . . . . . . . . . . . . . . . . . . . . . . . 314
Engine fault  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Engine management . . . . . . . . . . . . . . . . . . . . . 255
Warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 255Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
changing  . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Checking the oil level  . . . . . . . . . . . . . . . . . 310
Consumption  . . . . . . . . . . . . . . . . . . . . . . . . 312
Dipstick  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Filler opening . . . . . . . . . . . . . . . . . . . . . . . . 310
Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
Specifications  . . . . . . . . . . . . . . . . . . . . . . . 310
Topping up . . . . . . . . . . . . . . . . . . . . . . . . . . 310
ESP
See "Braking assist systems" . . . . . . . . . . . 216
Event Data Recorder  . . . . . . . . . . . . . . . . . . . . . 289
Exhaust gas purification system  . . . . . . . . . . . 255
Warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 255
Exterior aerial . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Exterior mirrors  . . . . . . . . . . . . . . . . . . . . . . . . . 132
Automatically folding exterior mirrors  . . . . 132
Controlling function . . . . . . . . . . . . . . . . . . . 133
Synchronised mirror adjustment  . . . . . . . . 132
Vehicle care  . . . . . . . . . . . . . . . . . . . . . . . . . 272
Extinguisher
Driving with a trailer  . . . . . . . . . . . . . . . . . . 261
F
Fastening rings  . . . . . . . . . . . . . . . . . . . . . . . . . 153
Fault
Dynamic chassis control . . . . . . . . . .  243, 244
Electric windows  . . . . . . . . . . . . . . . . . . . . . 104
Park assist system . . . . . . . . . . . . . . . . . . . . 230
Parking sensor system  . . . . . . . . . . . . . . . . 226
Rear assist  . . . . . . . . . . . . . . . . . . . . . . . . . . 236Fault memory
Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
Faults
Climate control  . . . . . . . . . . . . . . . . . . . . . . 184
Panorama sliding sunroof . . . . . . . . . . . . . . 106
Filling capacity
AdBlue tank  . . . . . . . . . . . . . . . . . . . . . . . . . 301
Filling the tank . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Control lamp  . . . . . . . . . . . . . . . . . . . . . . . . 294
Diesel  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Fuel gauge  . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Petrol  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Refilling precautions . . . . . . . . . . . . . . . . . . 296
Filter pre-heater . . . . . . . . . . . . . . . . . . . . . . . . . 298
Fire extinguisher  . . . . . . . . . . . . . . . . . . . . . . . . 347
Fire extinguishers  . . . . . . . . . . . . . . . . . . . . . . . 347
First aid kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347
First-aid kit
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347
Fitting
Tow hitch  . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Floor mats  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Fluids  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
Fog light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Foldable wedges
See on-board tools  . . . . . . . . . . . . . . . . . . . 354
Folding down rear seats
Load space . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Folding in exterior mirrors . . . . . . . . . . . . . . . . . 132
Folding table  . . . . . . . . . . . . . . . . . . . . . . . . . . . 168 

Index409
De-icing the door lock cylinder . . . . . . . . . . 276
Engine compartment . . . . . . . . . . . . . . . . . . 276
Exterior mirrors  . . . . . . . . . . . . . . . . . . . . . . 272
High pressure cleaning equipment  . . . . . . 271
Imitation leather  . . . . . . . . . . . . . . . . . . . . . 281
Instrument panel . . . . . . . . . . . . . . . . . . . . . 281
Plastic parts . . . . . . . . . . . . . . . . . . . . . . . . . 281
Protection of vehicle undercarriage . . . . . . 276
Real leather  . . . . . . . . . . . . . . . . . . . . . . . . . 280
Rubber seals  . . . . . . . . . . . . . . . . . . . . . . . . 275
Service position . . . . . . . . . . . . . . . . . . . . . . 127
Special features . . . . . . . . . . . . . . . . .  270, 271
Textile covers . . . . . . . . . . . . . . . . . . . . . . . . 279
Treating your upholstery . . . . . . . . . . . . . . . 278
Upholstery  . . . . . . . . . . . . . . . . . . . . . . . . . . 279
Vehicle paintwork  . . . . . . . . . . . . . . . . . . . . 274
Washing by hand . . . . . . . . . . . . . . . . . . . . . 270
Washing the vehicle  . . . . . . . . . . . . . . . . . . 270
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Wooden trim . . . . . . . . . . . . . . . . . . . . . . . . . 281
Vehicle code . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Vehicle data label  . . . . . . . . . . . . . . . . . . . . 380
Vehicle identification number  . . . . . . . . . . . . . 380
Vehicle key
Synchronising  . . . . . . . . . . . . . . . . . . . . . . . . 82
Vehicle key set
See "Keys"  . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Vehicle specifications . . . . . . . . . . . . . . . . . . . . 380
Vehicle telephone  . . . . . . . . . . . . . . . . . . . . . . . 288Vehicle's battery
Automatic consumer disconnection . . . . . . 321
Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Checking the electrolyte level . . . . . . . . . . . 319
Connecting . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Disconnecting  . . . . . . . . . . . . . . . . . . . . . . . 320
Replacing . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Running flat  . . . . . . . . . . . . . . . . . . . . . . . . . 321
Vibrations
Steering  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
W
Warning indicator
Doors  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Warning lamp
AdBlue  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Airbag system  . . . . . . . . . . . . . . . . . . . . . . . . 31
Alternator . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Brake system . . . . . . . . . . . . . . . . . . . . . . . . 211
Catalytic converter . . . . . . . . . . . . . . . . . . . . 255
Changing gear . . . . . . . . . . . . . . . . . . . . . . . 202
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Cruise control . . . . . . . . . . . . . . . . . . . . . . . . 240
Diesel particulate filter  . . . . . . . . . . . . . . . . 255
Engine management . . . . . . . . . . . . . . . . . . 255
Exhaust gas purification system  . . . . . . . . 255
Pressing the brake . . . . . . . . . . . . . . . . . . . . 211
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Vehicle battery . . . . . . . . . . . . . . . . . . . . . . . 319
Windscreen wiper fluid level . . . . . . . . . . . . 124Warning lamps
Lights  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Warning triangle  . . . . . . . . . . . . . . . . . . . . . . . . 347
Washing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
by hand  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Washing the vehicle  . . . . . . . . . . . . . . . . . . . . . 270
Sensors  . . . . . . . . . . . . . . . . . . . . . . .  225, 230
Special features . . . . . . . . . . . . . . . . . . . . . . 270
Special notes . . . . . . . . . . . . . . . . . . . . . . . . . 87
with high pressure cleaning equipment  . . 271
Water box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Wear indicators  . . . . . . . . . . . . . . . . . . . . . . . . . 329
Wear of tyres  . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Weights  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Wheel bolts  . . . . . . . . . . . . . . . . . . .  339, 340, 382
Caps  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
Tightening torque  . . . . . . . . . . . . . . . . . . . . 341
Wheel load capacity  . . . . . . . . . . . . . . . . . . . . . 333
Wheel rims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Beadlock  . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Bolted trims . . . . . . . . . . . . . . . . . . . . . . . . . 326
See "Wheels and tyres" . . . . . . . . . . . . . . . . 323
Wheel trims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Full hub caps  . . . . . . . . . . . . . . . . . . . . . . . . 337
Hub caps  . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Wheel bolts caps . . . . . . . . . . . . . . . . . . . . . 337
Wheels  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382
Wheels and tyres . . . . . . . . . . . . . . . . . . . . . . . . 323
Avoiding damage  . . . . . . . . . . . . . . . . . . . . 325
Changing a wheel  . . . . . . . . . . . . . . . . . . . . 339
Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333