341
If and when
Starting assistance
Introduction
If the engine fails to start because of a discharged battery, the battery of an-
other vehicle can be used to start the engine. Before starting, check the
magic eye on the battery ⇒ page 292.
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 inches 2
) for petrol en-
gines, and 35 mm 2
(0.054 inches 2
) 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:
● Starter assist systems (Start-Stop function) ⇒ page 196
● Working in the engine compartment ⇒ page 279
● Selective Catalytic Reduction (AdBlue) ⇒ page 275
● Vehicle battery ⇒ page 292
WARNING
Incorrect use of jump leads and incorrectly jump starting could cause the
battery to explode resulting in serious injury. Please observe the follow-
ing rules to minimise the risk of a battery explosion:
● All work involving the vehicle battery and electrical system can cause
corrosion, fire and serious electric shocks. Always read and take into ac-
count the safety warnings and standards before beginning work on the
battery ⇒ page 292, Vehicle battery.
WARNING (Continued)
● The battery providing current must have the same voltage (12V) and
approximately the same capacity (see markings on battery) as the flat
battery.
● Never charge a frozen or recently thawed battery. A flat battery can al-
so freeze at temperatures close to 0 °C (+32 °F).
● If a battery is frozen and/or has been frozen then it must be replaced.
● A 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.
● Charge 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.
● Jump leads should never enter into contact with moving parts in the
engine compartment.
● Never switch the positive and negative poles or connect the jump
leads incorrectly.
● Note the instructions provided by the manufacturer of the jump leads.
CAUTION
To avoid considerable damage to the vehicle electrical system, note the fol-
lowing carefully:
● If the jump leads are incorrectly connected, this could result in a short
circuit.
● The vehicles must not touch each other, otherwise electricity could flow
as soon as the positive terminals are connected.
Safety FirstOperating instructionsPractical tipsTechnical Specifications
342If and when
Positive pole on the starting assistance points
Fig. 217 In the engine
compartment: positive
pole for starting assis-
tance +
.
On some vehicles, there is a starting assistance terminal in the engine com-
partment, under a labelled cover. How to jump start: description
Fig. 218 Jump lead con-
nection diagram when
the assistance vehicle
does not have a Start-
Stop system: flat battery
A
and battery supplying
current B.
Fig. 219 Jump lead con-
nection diagram when
the assistance vehicle
has a Start-Stop system:
flat battery A
and bat-
tery supplying cur-
rent B
.
The discharged battery must be properly connected to the vehicle electrical
system.
343
If and when
The vehicles should not touch. Otherwise, current may be allowed to flow
when the positive poles are connected.
Connect the clamps so they have good metal-to-metal contact with the ter-
minals.
If the engine fails to start straight-away, switch off the starter after about 10
seconds and try again after about a minute.
Complete operations only in the sequence given.
Jump lead terminal connections
● Switch off the ignition of both vehicles ⇒ page 172.
● Likewise, open the battery cover in the engine compartment
⇒ page 292, or remove the positive pole cap from one side 1)
, in the direc-
tion of the arrow ⇒ fig. 217.
● Connect one end of the red jump lead to the positive terminal
⇒ fig. 218 +
or ⇒
fig. 217 + of the vehicle with the flat battery A ⇒ .
● Connect the other end of the red jump lead to the positive terminal + in
the vehicle providing assistance B.
● For vehicles without Start-Stop system: Connect one end of the black
jump lead to the negative terminal -
in the vehicle providing assistance
B ⇒ fig. 218.
● For vehicles with Start-Stop system: Connect one end of the black X
jump lead to a suitable ground connection, a solid piece of metal in the en-
gine block, or to the engine block
⇒ fig. 219.
● Connect the other end of the black jump lead X
to a solid metal compo-
nent connected to the engine block, or onto the engine block itself of the
vehicle with the flat battery however, connect it as far away as possible from
the battery A
⇒ .
● Place the leads so that they cannot be caught by any moving parts in the
engine compartment. Switching on
●
Start the engine of the vehicle supplying current and let it run at idling
speed.
● Start the engine of the car with the flat battery and wait two or three mi-
nutes until the engine is “running smoothly”.
Removing the jump leads
● Before you remove the jump leads, switch off the headlights (if they are
switched on).
● Turn on the heating and rear window heater in the vehicle with the flat
battery. This helps minimise voltage peaks which are generated when the
leads are disconnected.
● With the engines running, disconnect the leads in reverse order to con-
nection.
● Close the battery cover, or replace the positive pole cap 1)
.
WARNING
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:
● All work involving the vehicle battery and electrical system can cause
corrosion, fire and serious electric shocks. Always read and take into ac-
count the safety warnings and standards before beginning work on the
battery ⇒ page 292, Vehicle battery.
● Always protect your eyes with suitable working goggles and never
lean over the vehicle battery.
● The jump leads must be connected in the correct order: first the posi-
tive cable, then the negative cable.
1)
Vehicles whose battery is not located in the engine compartment ⇒ page 342.
Safety FirstOperating instructionsPractical tipsTechnical Specifications
344If and when
WARNING (Continued)
● Do not attach the negative cable to parts of the fuel system or to the
brake hose/pipe.
● The non-insulated parts of the battery clamps must not be allowed to
touch. Also, the cable connected to the positive pole of the battery
should never enter into contact with electrically conductive parts of the
vehicle.
● Check the magic eye on the battery; use a lamp if necessary. If it is
clear yellow or clear, do not start the vehicle: seek specialised technical
assistance.
● Avoid static electricity discharges in the area around the battery. In
the event of sparks, explosive gases coming from the battery could ig-
nite.
● Never use starting assistance if the vehicle battery is damaged, fro-
zen or has been frozen.
Towing and tow starting Introduction
When towing, always respect legal requirements.
For technical reasons, it is not possible to tow a vehicle if the battery is flat.
Additional information and warnings:
● Electronic power control and exhaust gases purification system
⇒ page 232
WARNING
A vehicle with a flat battery should never be towed.
● Never remove the key from the ignition lock. The electronic steering
lock could engage. Then the vehicle will be uncontrollable. You may lose
control of the vehicle and there is a risk of serious accident.
WARNING
When towing the vehicle, the handling and braking efficiency change
considerably. Please observe the following instructions to minimise the
risk of serious accidents and injury:
● As the driver of the vehicle being towed:
– The brake must be depressed must harder as the brake servo does
not operate. Always remain aware to avoid collision with the towing
vehicle.
– More strength is required at the steering wheel as the power steer-
ing does not operate when the engine is switched off.
● As the driver of the towing vehicle:
– Accelerate gently and carefully.
– Avoid sudden braking and manoeuvres.
– Brake well in advance than usual and brake gently.
CAUTION
● Carefully fit and remove the towing ring and its cover to avoid damage to
the vehicle (for example, paintwork).
● When towing, fuel could enter the catalytic converter and cause dam-
age!
345
If and when
Instructions for tow starting
In general, the vehicle should not be started by towing. Jump-starting is
much more preferable ⇒ page 341.
For technical reasons, the following vehicles can not be tow started:
● Vehicles with an automatic gearbox.
● Vehicles with an electronic parking brake, given that it is possible that
the brake will not be disengaged.
● If the vehicle battery is flat, it is possible that the engine control units do
not operate correctly.
However, if your vehicle must absolutely be tow-started (manual gearbox):
● Engage the 2nd or 3rd gear.
● Keep the clutch pressed down.
● Switch on the ignition and the hazard warning lights.
● Release the clutch when both vehicles are moving.
● As soon as the engine starts, press the clutch and move the gear lever
into neutral. This helps to prevent a collision with the towing vehicle.
CAUTION
When tow-starting, fuel could enter the catalytic converter and damage it.
Towing instructions
Tow-rope or tow-bar
When towing, the tow bar is the safest and vehicle friendly way. You should
only use a tow-rope if you do not have a tow-bar. A tow-rope should be slightly elastic to avoid damage to both vehicles. It is
advisable to use a tow-rope made of synthetic fibre or similarly elastic mate-
rial.
Only secure the tow rope or tow bar to the tow ring or specially designed
fitting.
Vehicles with a
factory fitted towing device , can only be used for towing
with a tow-bar, specially designed to fit on a tow hitch ball ⇒ page 237.
Towing vehicles with an automatic gearbox
Note the following for a towed vehicle:
● Make sure the gear selector lever is in the N position.
● Do not drive faster than 50 km/h (30 mph) when towing a vehicle.
● Do not tow further than 50 km (30 miles).
● If a breakdown truck is used, the vehicle must be towed with the front
wheels raised. Note the following instructions for towing four wheel drive
vehicles.
Instructions for towing four-wheel-drive vehicles
Four wheel drive vehicles can be towed using a toolbar or tow rope. If the
vehicle is towed with the front or rear axle raised, the engine must be turned
off to avoid transmission damage.
For vehicles with a double clutched DSG ®
(direct shift gearbox) the instruc-
tions for towing vehicles with an automatic gearbox apply ⇒ page 345.
Situations in which the vehicle should not be towed
In the following cases, the vehicle should not be towed but transported on a
trailer or special vehicle:
● If the vehicle gearbox does not contain lubricant due to a fault.
● If the vehicle battery is flat and, as a result, the electronic steering lock
and electronic parking brake cannot be disengaged if applied.
● If the vehicle to be towed has an automatic gearbox and the distance to
be covered is greater than 50 km (30 miles).
Safety FirstOperating instructionsPractical tipsTechnical Specifications
352Technical specifications
Technical specifications
Checking fluid levels
From time to time, the levels of the different fluids in the ve-
hicle must be checked. Never fill with incorrect fluids, other-
wise serious damage to the engine may be caused.
Fig. 223 Diagram for the location of the various elements Coolant fluid deposit
Engine oil dipstick
Oil filler neck
Brake fluid reservoir
Vehicle battery (underneath a cover)
Windscreen washer fluid reservoir
The checking and refilling of service fluids are carried out on the compo-
nents mentioned above. These operations are described in ⇒ page 279.
Overview
Further explanations, instructions and restrictions on the technical data are
contained as of ⇒ page 348
1
23456
Antitheft alarm systemAnti-tow system . . . . . . . . . . . . . . . . . . . . . . 79
Interior monitoring . . . . . . . . . . . . . . . . . . . . 79
Armrests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Ashtray . . . . . . . . . . . . . . . . . . . . . . . . . . . 151, 152
ASR See "Brake assist systems" . . . . . . . . . . . . 193
See "Braking assist" . . . . . . . . . . . . . . . . . 192
Turning on and off . . . . . . . . . . . . . . . . . . . 193
Assistance systems . . . . . . . . . . . . . . . . . . . . . 214 Cruise control . . . . . . . . . . . . . . . . . . . . . . . 214
Electronic differential lock system (EDL andXDS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Electronic Stability Control (ESC) . . . . . . . 191
Assist systems Anti-lock brake system (ABS) . . . . . . . . . . 191
Auto Hold . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Braking assist . . . . . . . . . . . . . . . . . . . . . . . 192
Lane Assist . . . . . . . . . . . . . . . . . . . . . . . . . 217
Lane Assist system . . . . . . . . . . . . . . . . . . . 217
Optical parking system . . . . . . . . . . . . . . . 202
Park assist . . . . . . . . . . . . . . . . . . . . . . . . . 201
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . 204
Park Assist system . . . . . . . . . . . . . . . . . . . 204
Parking sensor system . . . . . . . . . . . . . . . . 201
Rear Assist . . . . . . . . . . . . . . . . . . . . . . . . . 209
Rear assist system . . . . . . . . . . . . . . . . . . . 209
Sign Assist . . . . . . . . . . . . . . . . . . . . . . . . . 220
Start-Stop . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Start assist . . . . . . . . . . . . . . . . . . . . . . . . . 196
Traction control system (ASR) . . . . . . . . . . 193
Traction control when accelerating (ASR) . 192
Tyre monitoring indicator . . . . . . . . . . . . . . 227 Auto Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Automatic belt retainer . . . . . . . . . . . . . . . . . . . 26
Automatic car wash . . . . . . . . . . . . . . . . . . . . . 247
Switching Auto Hold off . . . . . . . . . . . . . . . 197
Switching the start assist off . . . . . . . . . . . 197
Automatic consumer disconnection . . . . . . . . 295
Automatic dipped beam control . . . . . . . . . . . . 99
Automatic gearbox . . . . . . . . . . . . . . . . . . . . . . 176 Changing gear . . . . . . . . . . . . . . . . . . . . . . 180
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
DSG automatic gearbox . . . . . . . . . . . . . . . 182
Ignition key lock . . . . . . . . . . . . . . . . . . . . . 174
Kickdown system . . . . . . . . . . . . . . . . . . . . 182
Launch-Control programme . . . . . . . . . . . . 182
Malfunction . . . . . . . . . . . . . . . . . . . . . . . . 183
Manually unlocking the gear selection lev-er . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Please also see "Changing gears" . . . . . . 176
See "Automatic gearbox" . . . . . . . . . . . . . . 176
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
AUX-IN connection . . . . . . . . . . . . . . . . . . . . . . 142
Auxiliary heater . . . . . . . . . . . . . . . . . . . . 165, 273 Automatic off . . . . . . . . . . . . . . . . . . . . . . . 269
Operating instructions . . . . . . . . . . . . . . . . 168
Programming . . . . . . . . . . . . . . . . . . . . . . . 167
Remote control . . . . . . . . . . . . . . . . . . . . . . 166
Remote control range . . . . . . . . . . . . . . . . . 167
Remote control: Replacing the battery . . . 166
Switching off . . . . . . . . . . . . . . . . . . . . . . . . 165
Switching on . . . . . . . . . . . . . . . . . . . . . . . . 165
Things to note . . . . . . . . . . . . . . . . . . . 165, 168
Auxiliary heater remote control Replacing the battery . . . . . . . . . . . . . . . . . 166 Axle loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
B
BAS See "Brake assist systems" . . . . . . . . . . . . 192
Battery Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Discharging . . . . . . . . . . . . . . . . . . . . . . . . 317
See Vehicle battery . . . . . . . . . . . . . . . . . . 292
Battery acid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Before starting out . . . . . . . . . . . . . . . . . . . . . . . . 7
Belt height adjustment . . . . . . . . . . . . . . . . . . . 26
Belt tension device . . . . . . . . . . . . . . . . . . . . . . . 26 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Service and disposal . . . . . . . . . . . . . . . . . . 27
Belt tension limiter . . . . . . . . . . . . . . . . . . . . . . . 26
Bicycle carrier Installing a bicycle carrier . . . . . . . . . . . . . 239
Maximum load . . . . . . . . . . . . . . . . . . . . . . 239
Biodiesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Bonnet Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Bottle capacity Windscreen washer water bottle . . . . . . . . 109
Bottle holders . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 Brake servo . . . . . . . . . . . . . . . . . . . . . . . . . 189
Electronic parking brake . . . . . . . . . . . . . . 187
Emergency braking function . . . . . . . . . . . 188
Parking brake . . . . . . . . . . . . . . . . . . . . . . . 187
370 Index
Brake assist systems . . . . . . . . . . . . . . . . . . . . 191
Brake assist system (BAS) . . . . . . . . . . . . . . . . 192
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193Specification . . . . . . . . . . . . . . . . . . . . . . . . 194
Brakes Brake assist systems . . . . . . . . . . . . . . . . . 191
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . 193
Brake fluid level . . . . . . . . . . . . . . . . . . . . . 194
Brake pads . . . . . . . . . . . . . . . . . . . . . . . . . 189
Changing the brake fluid . . . . . . . . . . . . . . 194
Control lamp . . . . . . . . . . . . . . . . . . . . . . . . 186
Emergency brake indicator in case of sud-den braking . . . . . . . . . . . . . . . . . . . . . . . 317
Running-in brake pads . . . . . . . . . . . . . . . . 189
Warning lamp . . . . . . . . . . . . . . . . . . . . . . . 186
Brake servo . . . . . . . . . . . . . . . . . . . . . . . . 189, 191
Brake system Malfunction . . . . . . . . . . . . . . . . . . . . . . . . 189
Brake systems . . . . . . . . . . . . . . . . . . . . . . . . . 191
Braking assist . . . . . . . . . . . . . . . . . . . . . . . . . . 192 Brake assist system (BAS) . . . . . . . . . . . . . 192
Breakdown Securing the vehicle . . . . . . . . . . . . . . . . . 316
Bulb fault See changing bulbs . . . . . . . . . . . . . . . . . . 330
C
Card compartments . . . . . . . . . . . . . . . . . . . . . 145
Care See "Care of your vehicle" . . . . . . . . . . . . . 246
Vehicle interior . . . . . . . . . . . . . . . . . . . . . . 253 Care of your vehicle
Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Caring for paintwork . . . . . . . . . . . . . . . . . . . . . 251
Carrier system . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Catalytic converter . . . . . . . . . . . . . . . . . . . . . . 233 Malfunction . . . . . . . . . . . . . . . . . . . . . . . . 233
Warning lamp . . . . . . . . . . . . . . . . . . . . . . . 232
CD changer . . . . . . . . . . . . . . . . . . . . . . . . 142, 149
Central locking . . . . . . . . . . . . . . . . . . . . . . . 74, 77 Antitheft alarm . . . . . . . . . . . . . . . . . . . . . . . 78
Locking/unlocking the vehicle . . . . . . . . . . 76
Central locking system After airbag deployment . . . . . . . . . . . . . . . 75
Description . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Opening doors individually . . . . . . . . . . . . . 75
Centre armrest . . . . . . . . . . . . . . . . . . . . . . . . . 126
Changing Windscreen wiper blades . . . . . . . . . . . . . 250
Changing a wheel . . . . . . . . . . . . . . . . . . . . . . 309 Changing a wheel . . . . . . . . . . . . . . . . . . . 315
Preparations . . . . . . . . . . . . . . . . . . . . . . . . 310
Raising the vehicle . . . . . . . . . . . . . . . . . . . 313
Wheel bolts . . . . . . . . . . . . . . . . . . . . . . . . . 311
Changing bulbs . . . . . . . . . . . . . . . . . . . . . . . . 330 Bodywork . . . . . . . . . . . . . . . . . . . . . . . . . . 337
Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Front bumper . . . . . . . . . . . . . . . . . . . . . . . 335
Halogen headlights . . . . . . . . . . . . . . . . . . 332
Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Initial operations . . . . . . . . . . . . . . . . . . . . 331
Number plate light . . . . . . . . . . . . . . . . . . . 339
Sea changing bulbs . . . . . . . . . . . . . . . . . . 330 Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Tail lights . . . . . . . . . . . . . . . . . . . . . . 336, 337
Xenon headlights . . . . . . . . . . . . . . . . . . . . 334
Changing gear . . . . . . . . . . . . . . . . . . . . . . . . . 176 Automatic gearbox . . . . . . . . . . . . . . . . . . . 180
Engaging gears (manual gearbox) . . . . . . 179
Manual gearbox . . . . . . . . . . . . . . . . . . . . . 179
Manually unlocking the gear selection lev-er . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Selecting gears (automatic gearbox) . . . . 180
Warning and control lamps . . . . . . . . . . . . 177
Changing gears Gear recommendation . . . . . . . . . . . . . . . . 184
Tiptronic . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Changing the battery of the vehicle key . . . . . . . . . . . . . . . . . . . . . 73
Changing the wheel After changing the wheel . . . . . . . . . . . . . . 315
Checking Tyre pressures . . . . . . . . . . . . . . . . . . . . . . . 302
Checking the oil level . . . . . . . . . . . . . . . . . . . . 285
Check list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Checklist Before working in the engine compart-ment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
Changing bulbs . . . . . . . . . . . . . . . . . . . . . 331
In case of an emergency . . . . . . . . . . . . . . 316
Check list Preparations for changing a wheel . . . . . . 310
Raising the vehicle with the jack . . . . . . . . 314
Checklist Refilling precautions . . . . . . . . . . . . . . . . . 271
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
371
Index