trailer Seat Ibiza ST 2012 Owner's manual

Table of Contents
Manual structure . . . . . . . . . . . . . . . . . . . . 5
Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety First . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Safe driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Brief introduction . . . . . . . . . . . . . . . . . . . . . . . . . 7
Proper sitting position for occupants . . . . . . . . . 10
Pedal area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Storing objects . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Brief introduction . . . . . . . . . . . . . . . . . . . . . . . . . 19
Why wear seat belts? . . . . . . . . . . . . . . . . . . . . . . 21
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Belt tensioners* . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Brief introduction . . . . . . . . . . . . . . . . . . . . . . . . . 30
Front airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Side airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Deactivating airbags* . . . . . . . . . . . . . . . . . . . . . . 41
Child safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Brief introduction . . . . . . . . . . . . . . . . . . . . . . . . . 43
Child seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Securing child seats . . . . . . . . . . . . . . . . . . . . . . . 48
Operating Instructions . . . . . . . . . . . . . 55
Cockpit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 LPG system* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Digital instrument panel display . . . . . . . . . . . . . 59
Warning lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Steering column controls* . . . . . . . . . . . . . . . . . 78
General information . . . . . . . . . . . . . . . . . . . . . . . 78
Audio Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Audio + Telephone Control . . . . . . . . . . . . . . . . . . 80
Opening and closing . . . . . . . . . . . . . . . . . . . . . . 82
Central locking . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Radio frequency remote control* . . . . . . . . . . . . . 88
Anti-theft alarm system* . . . . . . . . . . . . . . . . . . . 90
Rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Panoramic tilting sunroof* . . . . . . . . . . . . . . . . . . 98
Lights and visibility . . . . . . . . . . . . . . . . . . . . . . . . 100
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Interior lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Visibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Windscreen wipers . . . . . . . . . . . . . . . . . . . . . . . . 109
Rear view mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Seats and storage compartments . . . . . . . . . . 115
The importance of correct seat adjustment . . . . . 115
Head restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Rear seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Storage compartment . . . . . . . . . . . . . . . . . . . . . . 122
Ashtrays, cigarette lighter and power socket . . . 125
First-aid kit, warning triangle, fire extinguisher . 128
Luggage compartment . . . . . . . . . . . . . . . . . . . . . 129
Roof rack* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Air conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Air conditioning* . . . . . . . . . . . . . . . . . . . . . . . . . . 137 Climatronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Ignition lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Starting and stopping the engine . . . . . . . . . . . . 147
Start-Stop function* . . . . . . . . . . . . . . . . . . . . . . . 150
Manual gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Automatic gearbox* . . . . . . . . . . . . . . . . . . . . . . . 154
Handbrake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Acoustic parking aid system* . . . . . . . . . . . . . . . 163
Cruise speed* (Cruise control system) . . . . . . . . 164
Practical Tips . . . . . . . . . . . . . . . . . . . . . . . . . 168
Intelligent technology . . . . . . . . . . . . . . . . . . . . . 168
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Anti-lock brake system and traction control ABS 169
Electronic Stability Control (ESC)* . . . . . . . . . . . . 170
Driving and the environment . . . . . . . . . . . . . . . 173
Running-in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Exhaust gas purification system . . . . . . . . . . . . . 174
Economical and environmentally friendly driving 176
Driving abroad . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Trailer towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Vehicle maintenance and cleaning . . . . . . . . . 181
General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Care of the vehicle exterior . . . . . . . . . . . . . . . . . . 182
Vehicle interior maintenance . . . . . . . . . . . . . . . . 187
3
Table of Contents

Accessories, replacement of parts and
modifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Accessories and spare parts . . . . . . . . . . . . . . . . 190
Technical modifications . . . . . . . . . . . . . . . . . . . . 190
Roof aerial* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Mobile telephones and two-way radios . . . . . . . . 191
Fitting a towing bracket* . . . . . . . . . . . . . . . . . . . 192
Checking and refilling levels . . . . . . . . . . . . . . . 194
Refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
LPG system* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Petrol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Working in the engine compartment . . . . . . . . . . 200
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Washer fluid and windscreen wiper blades . . . . 209
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Vehicle battery . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
If and when . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Vehicle tools, spare wheel . . . . . . . . . . . . . . . . . . 223
Wheel change . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Tyre repair kit (Tyre-Mobility-System)* . . . . . . . . . 229
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Bulb change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Single headlight bulb change . . . . . . . . . . . . . . . 236
Double headlight bulb change . . . . . . . . . . . . . . . 238
Changing the bulbs of AFS headlights . . . . . . . . 242
Changing the fog light bulbs . . . . . . . . . . . . . . . . 243
Changing the rear lights (on the wing) . . . . . . . . 244
Changing the rear lights (on the rear lid) . . . . . . 245
Side turn signal bulbs . . . . . . . . . . . . . . . . . . . . . . 246
Number plate light . . . . . . . . . . . . . . . . . . . . . . . . 247
Interior light and front reading lights . . . . . . . . . 247
Additional brake lights* . . . . . . . . . . . . . . . . . . . . 248
Luggage compartment light . . . . . . . . . . . . . . . . . 248 Jump-starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Towing and tow-starting . . . . . . . . . . . . . . . . . . . . 252
Technical Specifications . . . . . . . . . . . 255
Description of specifications . . . . . . . . . . . . . . . 255
Important information . . . . . . . . . . . . . . . . . . . . . 255
Information on fuel consumption . . . . . . . . . . . . 257
Towing a trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Technical specifications . . . . . . . . . . . . . . . . . . . . 259
Checking fluid levels . . . . . . . . . . . . . . . . . . . . . . . 259
Petrol engine 1.2 51 kW (70 PS) . . . . . . . . . . . . . 260
Petrol engine 1.2 TSI 63 kW (85 PS) . . . . . . . . . . 261
Petrol engine 1.4 63 kW (85 PS) . . . . . . . . . . . . . 262
Petrol engine 1.2 TSI 77 kW (105 PS) . . . . . . . . . 263
Petrol engine 1.2 TSI 77 kW (105 PS) Start-Stop 264
Petrol engine 1.4 TSI 110 kW (150 PS) automatic . .265
Diesel engine 1.2 TDI CR 55 kW (75 PS) DPF
Start-Stop Ecomotive . . . . . . . . . . . . . . . . . . . . . . 266
Diesel engine 1.2 TDI CR 55 kW (75 PS) DPF . . . . 267
Diesel engine 1.6 TDI CR 66 kW (90 PS) DPF . . . . 268
Diesel engine 1.6 TDI CR 77 kW (105 PS) with/
without DPF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Dimensions and capacities . . . . . . . . . . . . . . . . . 270
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
4Table of Contents

73
Cockpit
Brake system* 
This warning lamp lights up if the brake fluid level is too low
or if there is a fault in the system.
This warning lamp  lights up if
● the brake fluid level is too low ⇒ page 213.
● there is a fault in the brake system.
This warning lamp can light up together with the ABS system warning lamp.
WARNING
● If the brake warning lamp does not go out, or if it lights up when driv-
ing, the brake fluid level ⇒ page 213, Brake fluid in the reservoir is too
low. Risk of accident. Stop the vehicle and do not drive on. Obtain techni-
cal assistance.
● If the brake warning lamp  lights up together with the ABS warning
lamp , the control function of the ABS could be out of action. This could
cause the rear wheels to lock quickly when you brake. This could cause
the rear to break away. Risk of skidding. Stop the vehicle and seek tech-
nical assistance.

Cruise speed (Cruise control)* 
The warning lamp comes on when the cruise control system
is switched on.
The warning lamp  lights up when the cruise control system is switched
on. For further information on the cruise control system, see ⇒ page 164.Tyre pressure* 
Fig. 40 Centre console:
tyre monitor system but-
ton
The tyre control lamp 1)
compares wheel revolutions and with it, the wheel
diameter of each wheel using the ESC. If the diameter of a wheel changes,
the tyre control lamp  lights up. The wheel diameter changes when:
● Tyre pressure is insufficient.
● The tyre structure is damaged.
● The vehicle is unbalanced because of a load.
● The wheels of one axle are under more pressure (for example, driving
with a trailer or on extreme slopes).
● The vehicle is fitted with snow chains.
● The temporary spare wheel is fitted.
● The wheel on one axle is changed. 
1)
Depending on the model version
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

74Cockpit
Tyre pressure adjustment
Following the modification to tyre pressure or changing one or more wheels,
the button ⇒  Fig. 40 must be kept pressed while the ignition is on until an
audible warning is heard.
If the wheels are under excessive load (for example, driving with a trailer or
heavy load), the tyre pressure must be increased to the recommended value
for a full load (see the sticker on the inside of the fuel flap). If the tyre moni-
tor system button is pressed down, the new tyre pressures are confirmed.
The tyre pressure control lamp  lights up
If the tyre pressure of a wheel is much lower than the value set by the driver,
then the tyre pressure control lamp ⇒ 
will light up.
WARNING
● When the tyre pressure control lamp lights up, reduce speed immedi-
ately and avoid any sudden manoeuvre or braking. Stop when possible,
and check the tyre pressure and status.
● The driver is responsible for maintaining correct tyre pressures. For
this reason, tyre pressure must be regularly checked.
● Under certain circumstances (for example, when driving in a sports-
like manner, in winter conditions or on a dirt track) the tyre control lamp
may light up or function incorrectly.
Note
If the battery is disconnected, the yellow warning lamp  lights up after
turning the ignition on. This should turn off after a brief journey. Speed selector lever lock* 
The brake pedal must be depressed when this warning lamp lights up. This
is necessary when the automatic gearbox* selector lever is moved out of the
positions
P or N. 
Fuel level/reserve 
This symbol lights up to indicate that the fuel tank is under
the reserve level.
It lights up when only 7 litres of fuel remain in the tank. Moreover, an audi-
ble warning* is heard. It reminds you to fuel up the fuel tank as soon as
possible ⇒ page 194. 
Indicates that the doors are open* 
This warning lamp lights up if one of the doors or the rear
lid is open. The warning light  should go off when all the doors are closed correctly. 
Rear lid open* 
The warning lamp  should switch off when the rear lid is fully closed. 

107
Lights and visibility
Note
● The turn signals only work when the ignition is switched on. The corre-
sponding warning lamp  or  flashes in the instrument panel. The control
lamp  flashes when the turn signals are operated, provided a trailer is
correctly attached and connected to the vehicle. If a turn signal bulb is de-
fective, the control lamp flashes at double speed. If the trailer turn signal
bulbs are damaged, control lamp  does not light up. Change the bulb.
● The main beam headlights can only be switched on if the dipped beam
headlights are already on. The warning lamp  then comes on in the instru-
ment panel.
● The headlight flasher comes on for as long as you pull the lever – even if
no other lights are switched on. The warning lamp  then comes on in the
instrument panel.
● When the parking lights are switched on, the headlight and the tail light
on the corresponding side of the vehicle light up. The parking lights will on-
ly work if the key is removed from the ignition. If the lights are switched on,
an audible warning will be emitted while the driver door is open.
● If the turn signal lever is left on after the key has been taken out of the
ignition lock, an acoustic signal sounds when the driver door is opened.
This is a reminder to switch off the turn signal, unless of course you wish to
leave the parking light on. Interior lights
Front interior light
Fig. 61 Interior roof trim:
front interior lighting
The switch A

⇒  Fig. 61 is used to select the following positions:
Courtesy light position 
Sliding switch in central position The interior lighting is automatically
switched on when the vehicle is unlocked or the key removed from the igni-
tion. And turn off approx. 20 seconds after closing the doors. The interior
lights are switched off when the vehicle is locked or when the ignition is
switched on.
Interior light switched on 
Move the knob to the position .
Interior light switched off O
Move the switch to position O ⇒ Fig. 61.

Safety FirstOperating InstructionsPractical TipsTechnical Specifications

145
Driving
Safety Electronic Stability Control (ESC)*
The ESC helps make driving safer in extreme driving condi-
tions.
Fig. 106 Detailed view of the dash panel: ESC switch.The Electronic Stability Control (ESC) contains the electronic differential lock
(EDL) and the traction control system (ASR). The ESC works together with
the ABS. Both control lamps will light up if the ESC or ABS systems are faul-
ty.
The ESC system is started automatically when the engine is started.
The ESC system is always active and cannot be switched off. The ESC switch
only switches the ASR off.
WARNING
● Do not forget that the Electronic stability control ESC cannot defy the
laws of physics. This should be kept in mind, particularly on slippery and
wet roads and when towing a trailer.
● Always adapt your driving style to suit the condition of the roads and
the traffic situation. The greater safety provided by the ESC should not
encourage you to run any risks.
● Please refer to the corresponding warning notes on ESC in
⇒ page 168, Intelligent technology.

Ignition lock Position of the ignition key
Fig. 107 Ignition key po-
sitions 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

151
Driving
Start-Stop function conditions
● The driver seat belt must be buckled.
● The bonnet must be closed.
● The engine must be at operating temperature.
● The steering wheel must be straight.
● The vehicle must be on flat ground.
● The vehicle must not be in reverse.
● A trailer must not be connected.
● The temperature of the interior must be within the convenience limits
( AC
button should be selected).
● The windscreen de-mist function must be off.
● If in an increase in airflow is not requested.
● The temperature must not be set to HI or LO.
● The driver door must be closed.
● The diesel particulate filter must not be in regeneration mode, for diesel
engines.
● The battery charge must not be low for the next start.
● The battery temperature must be between –1°C and 55°C.
Start-Stop function interruption
In the following situations, the Start-Stop function will be interrupted and
the engine will automatically start:
● The vehicle starts moving.
● The brake pedal is pressed several times in a row.
● The battery has been discharged excessively.
● The Start-Stop System is manually deactivated.
● The windscreen de-mist function is turned on.
● The temperature of the interior exceeds the convenience limits ( AC
but-
ton).
● If the airflow is increased by more than 3 presses. ●
Temperature setting HI or LO is selected.
● The engine coolant temperature is insufficient.
● The alternator is faulty, for example the V-belt has ruptured.
● If any of the conditions described in the previous section are not fulfil-
led.
WARNING
Never allow the vehicle to move with the engine off for any reason. You
could lose control of your vehicle. This could cause an accident and seri-
ous injury.
● The brake servo does not work with the engine off. You need more
force to stop the vehicle.
● Power steering does not work when the engine is not running. That is
why it is much more difficult to turn the steering wheel.
● Turn off the Start-Stop system when driving through water (fording
streams, etc.).
Note
● For vehicles with the Start-Stop function and a manual gearbox, when
the engine is started, the clutch must be pressed.
● When the conditions for the Start-Stop function are not fulfilled, the in-
strument panel displays the Start-Stop indicator dimmed.
● If the steering wheel is turned more than 270°, it will not be possible to
start the vehicle again. To start the vehicle, straighten the steering wheel so
that it is turned less than 270°. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

163
Driving
WARNING
● If you do not start the vehicle immediately after taking your foot off
the brake pedal, the vehicle may start to roll back under certain condi-
tions. Depress the brake pedal or use the handbrake immediately.
● If the engine stalls, depress the brake pedal or use the handbrake im-
mediately.
● When following a line of traffic uphill, if you want to prevent the vehi-
cle from rolling back accidentally when starting off, hold the brake pedal
down for a few seconds before starting off.
Note
The Official Service or a specialised workshop can tell you if your vehicle is
equipped with this system. 
Acoustic parking aid system* Rear parking aid
The parking aid system will use an audible warning to indi-
cate of the approach of any object towards the rear of the ve-
hicle. Description
The acoustic parking aid system will measure the distance between the rear
of the vehicle and any possible obstacle using four ultrasonic sensors loca-
ted on the rear bumper. The measuring range of the sensors starts approxi-
mately and depending on the nature of the obstacle at a distance of:
● side of the rear bumper: 0.6 m
● middle of the rear bumper: 1.6 m Activation
The system is activated by engagement of the reverse gear. A brief audible
warning confirms the activation and correct function of the system.
Reverse gear
The distance warning will begin as soon as an obstacle is detected by the
system. The frequency of the bleeps emitted by the system will increase rap-
idly as the vehicle approaches the obstacle.
Within a short distance of about 30cm, a continuous signal sounds (stop
signal). The driver should not reverse any further.
Models with a factory-fitted towing bracket: When the vehicle is less than
0.35 m away from the obstacle the warning tone will sound continuously.
The driver should then not reverse any further.
The warning tone decreases by 30% after 3 seconds from the start of the
system.
Provided that it is not in continuous mode, the tone on the parking aid sys-
tem stops when it detects a wall parallel to the vehicle.
Trailer towing
For vehicles factory-fitted with a towing bar, the parking aid system will not
be activated by the engagement of the reverse gear when pulling a trailer,
as the trailer's electric connector will be plugged into the vehicle.
Possible faults
If a continuous beep sounds for some seconds when the reverse gear is en-
gaged, this indicates that there is a fault in the parking aid system.
If the fault continues until the ignition is turned off, the audible warning of
the fault will not be emitted every time the system is reactivated (by engag-
ing the reverse gear). Thus, the system ready indication will not sound ei-
ther. Have the fault repaired by a Technical Service as soon as possible.
If there is no ready signal or no acoustic warning signal, then the parking
aid loudspeaker is faulty and may not warn of obstacles.

Safety FirstOperating InstructionsPractical TipsTechnical Specifications

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. 

170Intelligent technology
The ASR helps the car to start moving, accelerate and climb a gradient in
slippery conditions, where this may otherwise be difficult or even impossi-
ble.
The ASR automatically switches on when the engine is started. If necessary,
it may be turned on or off by briefly pushing the ESC button on the centre
console.
When the ASR is off, the warning lamp  is lit. The ASR should normally be
left on. Only in exceptional circumstances, when the slipping of the wheels
is required, can they be disconnected using the ESC button, for example.
● With compact temporary spare wheel.
● When using the snow chains.
● When driving in deep snow or on loose surfaces
● When the vehicle is bogged-down, to free it by rocking.
The ASR should be switched on again as soon as possible.
WARNING
● Remember that not even the ASR can defy the laws of physics. This
should be kept in mind, particularly on slippery and wet roads and when
towing a trailer.
● Always adapt your driving style to suit the condition of the roads and
the traffic situation. The greater safety provided by the ASR should not
encourage you to run any risks.
CAUTION
● To ensure that the ASR works correctly, identical tyres should be fitted
on all four wheels. Any differences in the rolling radius of the tyres can
cause the system to reduce engine power when this is not desired.
● Any modifications made to the vehicle (for example, to the engine,
brake system, running gear or to the combination of wheels and tyres) may
affect the operation of the ABS and ASR. XDS*
Driveshaft differential
When taking a bend, the driveshaft differential mechanism allows the outer
wheel to turn at a higher speed than the inner wheel. In this way, the wheel
that is turning faster (outer wheel) receives less drive torque than the inner
wheel. This may mean that in certain situations the torque delivered to the
inner wheel is too high, causing the wheels to spin. On the other hand, the
outer wheel is receiving a lower drive torque than it could transmit. This
causes an overall loss of lateral grip on the front axle, resulting in under-
steer or “lengthening” of the trajectory.
The XDS system can detect and correct this effect via the sensors and sig-
nals of the ESC.
Via the ESC, the XDS will brake the inside wheel and counter the excess
driving torque of that wheel. This means that the driver's desired trajectory
is much more precise,
The XDS system works in combination with the ESC and is always active,
even when the ASR traction control is disconnected.

Electronic Stability Control (ESC)*
General notes
The Electronic Stability Control increases the vehicle's stabil-
ity on the road. The Electronic Stability Control helps reduce the danger of skidding.
The Electronic Stability Control (ESC) includes the systems ABS, EDL and
ASR 