220Driver assistance systems
Switching on
–Engage reverse gear or
– Press the button on the centre console ⇒ Fig. 149. A short
confirmation signal will be heard and the button symbol will
light up yellow.
With certain equipment (Adaptive Cruise Control), the system will
be switched on automatically when the vehicle reverses a given
distance (approx. 10 cm if an obstacle is detected at the rear and
approx. 20 cm if no obstacle is detected at the rear).
Switching off
– Drive forwards at more than 10 km/h (6 mph), or
– Press the button, or
– Switch the ignition off
Segments of the visual indication
The distance of separation from the obstacle can be estimated using the
segments around the vehicle. With certain equipment (Radio Standard), the
yellow lines* mark the estimated path, depending on the angle of the
turned steering wheel. A white segment is seen when an obstacle is detec-
ted out of the path of the vehicle. The red segments represent obstacles de-
tected within the path. As the vehicle approaches an obstacle, the seg-
ments are displayed closer to the vehicle. When the penultimate segment is
displayed, this means that the vehicle has reached the collision zone. In the
collision zone, obstacles are represented in red, including those out of the
path. Do not continue to move forward (or backward) ⇒
in General infor-
mation on page 218, ⇒ in General information on page 218 ! Automatic activation
1)
When the parking aid (ParkPilot) is automatically switched on this is shown
in miniature on the left side of the display.
When slowly approaching an obstacle located in front of the vehicle, the au-
tomatic activation only functions each time the speed is reduced below ap-
proximately 10 km/h (6 mph) for the first time. If the parking aid is deactiva-
ted using the button, the following actions must be carried out in order
for it to automatically reactivate:
● Switch off the ignition and switch it on again.
● OR: Accelerate above 10 km/h (6 mph) before reducing speed below
this number again.
● OR: Place the selector lever in position P and then move it from this po-
sition.
● OR: Switch on and off the automatic activation in the Easy Connect sys-
tem menu.
The automatic activation with parking aid miniature indication can be
switched on and off from the Easy Connect system menu ⇒ page 81:
● Switch the ignition on.
● Press button
.
● Press the Setup function button.
● Press the Parking and Manoeuvring function button.
● Select the parking aid (ParkPilot) from the list.
● Automatic activation.
When the function button check box is activated , the function is on.
1)
Available only with certain equipment.
221
Driver assistance systems
Adjusting the display and audible warnings
The settings for the display and audible warnings are con-
trolled via the Easy Connect*.
Requirements: the parking aid must be switched on.
– Select: button CAR
> control button Car* Systems > Driver assis-
tant > Parking aid ⇒ page 81.
Automatic activation 1)
on – activates the Automatic activation option ⇒ page 220
off – deactivates the Automatic activation option ⇒ page 220.
Front volume
Volume in the front and rear area.
Front sound settings
Frequency (tone) of the sound in the front area.
Rear volume
Volume in the rear area
Rear sound settings
Frequency (tone) of the sound in the rear area.
Adjust volume
With the parking aid switched on, the active audio/video source volume will
be reduced to the intensity of the selected setting.
You will hear a short test tone from the corresponding speaker each time
you make a new setting. Error messages
When the parking aid is activated or when switching it on, if a continuous
warning can be heard over several seconds (additionally, in the case of
Parking system plus the LED of the
button flashes), there is a fault in the
system. If the fault does not disappear before switching off the ignition, the
next time the parking aid is switched on by engaging reverse gear the fault
will only be indicated with the flashing LED on the button.
Parking system plus*
If there is a fault in a sensor, the symbol is displayed on the Easy Con-
nect display in front of/behind the vehicle. If a rear sensor is faulty, only the
obstacles in the areas A
and B are displayed ⇒ Fig. 148. If a front sensor
is faulty, only the obstacles in the areas C and D are displayed.
Have the fault corrected by a specialised workshop without delay.
Towing bracket
If the trailer power socket is occupied, the rear parking aid sensors will not
activate when reverse gear is engaged, or when the button is pressed.
This function may not be covered under warranty if the towing bracket is not
factory-fitted. This causes the following limitations:
Parking system plus*
There will be no warning about the presence of obstacles in the rear area.
The monitoring in the front area remains active. The optical display changes
to towing mode.
1)
available only with certain equipment - Radio Standard
Safety FirstOperating instructionsPractical TipsTechnical specifications
225
Intelligent technology
Corrosion
There may be a tendency for corrosion to form on the discs and dirt to build
up on the brake pads if the vehicle is used infrequently or the brakes are
not used very often.
If the brakes are not used frequently, or if rust has formed on the disks, it is
advisable to clean off the pads and disks by braking firmly a few times at a
moderately high speed ⇒
.
Fault in the brake system
If the brake pedal travel should ever increase suddenly, this may mean that
one of the two brake circuits has failed. Drive immediately to the nearest
specialised workshop and have the fault repaired. Drive there slowly and re-
member that you will have to apply more pressure on the brake pedal and
allow for longer stopping distances.
Low brake fluid level
Malfunctions can occur in the brake system if the brake fluid level is too
low. The brake fluid level is monitored electronically.
Brake servo
The brake servo increases the pressure you apply to the brake pedal. It
works only when the engine is running.
WARNING
● Apply the brakes heavily to clean the brake system only in a suitable
traffic situation. Do not put other road users in danger: risk of causing an
accident.
● Ensure the vehicle does not move while in neutral, when the engine is
stopped. Failure to do so could result in an accident.
CAUTION
● Never let the brakes “drag” by leaving your foot on the pedal when it is
not necessary to brake. This overheats the brakes, resulting in longer stop-
ping distances and greater wear.
● Before driving down a long, steep gradient, it is advisable to reduce
speed and select a lower gear. This makes use of engine braking and re-
lieves the brakes. If you still have to use the brakes, it is better to brake
firmly at intervals than to apply the brakes continuously.
Note
● If the brake servo is out of action due to a malfunction, or if the car has
to be towed, you will have to press the brake pedal considerably harder to
make up for the lack of servo assistance.
● If you wish to equip the vehicle with accessories such as a front spoiler
or wheel covers, it is important that the flow of air to the front wheels is not
obstructed, otherwise the brakes can overheat.
Electro-mechanical steering
Electro-mechanical power steering assists the driver when
steering.
Electro-mechanical power steering adapts electronically to the speed of the
car, torque and turning angle.
If the power steering should fail at any time or the engine is switched off (for
instance when being towed), the car can still be steered. However, more ef-
fort than normal will be required to turn the steering wheel.
Driver warning lamps and messages
(in red) Faulty steering! To park the vehicle
Safety FirstOperating instructionsPractical TipsTechnical specifications
226Intelligent technology
If the warning lamp remains on and the driver indication appears, the power
steering could be faulty.
Do not continue driving. Seek specialist assistance. (in yellow) Steering: System fault! You may continue driving.
If the warning lamp comes on, the steering could react with more difficultly
or more sensitivity than normal. In addition, when driving in a straight line
the steering wheel may be off-centre.
Drive slowly to a specialised workshop and have the fault repaired. (in yellow) Steering lock: fault! Go to an Official Service
The electronic steering lock is malfunctioning.
Go to a specialised workshop as soon as possible and have the fault re-
paired.
WARNING
Take it immediately to a specialised workshop and have the fault re-
paired: risk of accident!
Note
If a red or yellow warning lamp come on briefly, you can continue driv-
ing.
Progressive steering
Depending on the vehicle's equipment, the progressive steering can adapt
steering hardness to the driving conditions. Progressive steering only works
when the engine is running. In city traffic
there is no need to turn the wheel so much when parking, ma-
noeuvring or in tight turns.
On the road or on motorways, the progressive steering transmits, e.g., on
bends, a sportier, more direct and perceptibly more dynamic sensation to
the steering wheel
Power Management This system helps to ensure reliable starting
The power management controls the distribution of electri-
cal energy and thus helps to ensure that there is always
enough power available to start the engine.
If a vehicle with a conventional electrical system is left parked for a long
time, the battery will gradually lose its charge because certain electrical
equipment (such as the electronic gearbox lock) continues to draw current
even when the ignition is off. In some cases there may not be enough power
available to start the engine.
Your vehicle is equipped with an intelligent power management system to
control the distribution of electrical energy. This significantly improves relia-
bility when starting the engine, and also prolongs the useful life of the bat-
tery.
The main functions incorporated in the power management system are bat-
tery diagnosis , residual current management and dynamic power manage-
ment.
248Checking and refilling levels
The engine management automatically adapts to the natural gas used ac-
cording to its quality. Therefore, different quality gases can be mixed in the
tank, without the need for comprehensive draining before applying a differ-
ent quality gas.
The instrument panel display shows information on the current natural gas
quality ⇒ page 73.
Natural gas and safety
If you can smell gas or suspect that there is a leak ⇒
:
● Stop the vehicle immediately.
● Switch the ignition off.
● Open the doors to appropriately ventilate the vehicle.
● Extinguish cigarettes immediately.
● Move away from the vehicle or switch off objects that may cause sparks
or a fire.
● If you continue to smell gas, do not continue driving!
● Seek specialist assistance. Have the fault repaired.
WARNING
Failure to act when you can smell gas in the vehicle or when refuelling
can cause serious injuries.
● Carry out the necessary operations.
● Leave the danger zone.
● If necessary, warn the emergency services.
WARNING
The vehicle is not prepared to use liquefied natural gas (LNG) and this
fuel must not be added under any circumstances. Liquefied natural gas
can cause the natural gas tank to explode resulting in serious injury.
Note
Have natural gas system checked regularly by a specialised workshop in ac-
cordance with the Maintenance Programme.
Filling the tank Filling the tank
Fig. 151 Fuel tank flap
with tank cap attached
The flap that covers the tank cap is unlocked and locked automati-
cally by the central locking.
Opening the fuel tank cap
– Open the fuel tank flap, by pressing on the left side.
– Unscrew the fuel tank cap anti-clockwise.
281
Emergencies
WARNING
● Make sure that the jack* remains stable. If the surface is slippery or
soft, the jack* could slip or sink, respectively, with the resultant risk of
injury.
● Only raise the vehicle with the jack* supplied by the manufacturer.
Other vehicles could slip, with the consequent risk of injury.
● Only mount the jack* on the support points designed for this purpose
on the strut, and always align the jack correctly. If you do not, the jack*
could slip as it does not have an adequate grip on the vehicle: risk of in-
jury!
● The height of the parked vehicle can change as a result of variations
in temperature and loading.
CAUTION
The vehicle must not be raised on the crossbar. Only place the jack* on the
points designed for this purpose on the strut. Otherwise, the vehicle may be
damaged.
Removing and fitting a wheel
After loosening the wheel bolts and raising the vehicle with the
jack, change the wheel as described below:
Taking off the wheel
– Unscrew the wheel bolts using the box spanner and place them
on a clean surface.
– Take off the wheel ⇒
. Putting on the spare wheel
When fitting tyres with a compulsory rotation direction, observe
the instructions in
⇒ page 281.
– Mount the wheel.
– Screw on the wheel bolts in position and tighten them loosely
with a box spanner.
– Carefully lower the vehicle using the jack*.
– Tighten the wheel bolts in diagonal pairs using the wheel
brace.
The wheel bolts should be clean and turn easily. Before fitting the spare
wheel, inspect the wheel condition and hub mounting surfaces. These sur-
faces must be clean before fitting the wheel.
CAUTION
When removing/fitting the wheel, the rim may hit and damage the brake
disc. For this reason, please take care and get a second person to assist
you.
Tyres with compulsory direction of rotation
A directional tread pattern can be identified by arrows on the sidewall that
point in the direction of rotation. Always observe the direction of rotation in-
dicated when mounting the wheel. This is important so that these tyres can
give maximum grip and avoid excessive noise, tread wear and aquaplaning.
If, exceptionally, it is necessary to mount the spare wheel* in the opposite
direction of rotation, please drive carefully, as in this case the tyre does not
have optimum conditions of use. This is particularly important when driving
on wet roads.
Safety FirstOperating instructionsPractical TipsTechnical specifications
285
Emergencies
6. Position the leads in such a way that they cannot come into contact with any moving parts in the engine compartment.
Starting
7. Start the engine of the vehicle with the boosting battery and let it run at idling speed.
8. Start the engine of the vehicle with the flat battery and wait two or three minutes until the engine is “running”.
Removing the jump leads
9. Before you remove the jump leads, switch off the dipped beam headlights (if they are switched on).
10.Turn on the heater blower and heated rear window in the vehi- cle with the flat battery. This helps minimise voltage peaks
which are generated when the leads are disconnected.
11.When the engine is running, disconnect the leads in reverse or- der to the details given above.
Connect the battery clamps so they have good metal-to-metal contact with
the battery terminals.
If the engine fails to start, switch off the starter after about 10 seconds and
try again after about half a minute.
WARNING
● Please note the safety warnings referring to working in the engine
compartment ⇒ page 251.
● The battery providing assistance must have the same voltage as the
flat battery (12V) and approximately the same capacity (see imprint on
battery). Failure to comply could result in an explosion.
● Never use jump leads when one of the batteries is frozen. Danger of
explosion! Even after the battery has thawed, battery acid could leak and
cause chemical burns. If a battery freezes, it should be replaced.
● Keep sparks, flames and lighted cigarettes away from batteries, dan-
ger of explosion. Failure to comply could result in an explosion.
● Observe the instructions provided by the manufacturer of the jump
leads.
● Do not connect the negative cable from the other vehicle directly to
the negative terminal of the flat battery. The gas emitted from the battery
could be ignited by sparks. Danger of explosion.
● Do not attach the negative cable from the other vehicle to parts of the
fuel system or to the brake line.
● The non-insulated parts of the battery clamps must not be allowed to
touch. The jump lead attached to the positive battery terminal must not
touch metal parts of the vehicle, this can cause a short circuit.
● Position the leads in such a way that they cannot come into contact
with any moving parts in the engine compartment.
● Do not lean on the batteries. This could result in chemical burns.
Note
The vehicles must not touch each other, otherwise electricity could flow as
soon as the positive terminals are connected.
Safety FirstOperating instructionsPractical TipsTechnical specifications
Index
A
ABSsee Anti-lock brake system . . . . . . . . . . . . 222
ACC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 radar sensor . . . . . . . . . . . . . . . . . . . . . . . . 191
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Acoustic parking aid . . . . . . . . . . . . . . . . . . . . 217
Acoustic warnings Headlights . . . . . . . . . . . . . . . . . . . . . . . . . 111
Adaptive cruise control . . . . . . . . . . . . . . . . . . 189 control lamp . . . . . . . . . . . . . . . . . . . . . . . . 190
malfunction . . . . . . . . . . . . . . . . . . . . . . . . 190
messages on the display . . . . . . . . . . . . . . 190
radar sensor . . . . . . . . . . . . . . . . . . . . . . . . 191
Special driving situations . . . . . . . . . . . . . 199
switching off temporarily . . . . . . . . . . . . . . 198
using . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
warning lamp . . . . . . . . . . . . . . . . . . . . . . . 190
Additional electrical appliances (efficiency pro- gramme) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Adjusting front head restraints . . . . . . . . . . . . . . . . . 131
front seats . . . . . . . . . . . . . . . . . . . . . . . . . . 129
rear head restraints . . . . . . . . . . . . . . . . . . 132
Adjusting the head restraints Front head restraints . . . . . . . . . . . . . . . . . 131
Airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Airbag covers . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 34
curtain airbags . . . . . . . . . . . . . . . . . . . . . . . 43
Differences between front passenger frontairbag systems . . . . . . . . . . . . . . . . . . . . . 33
Front airbags . . . . . . . . . . . . . . . . . . . . . . . . 36
Knee airbag . . . . . . . . . . . . . . . . . . . . . . . . . 39
side airbags . . . . . . . . . . . . . . . . . . . . . . . . . 40
Air pressure (tyres) . . . . . . . . . . . . . . . . . . . . . . 265
Alarm system . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Alcantara: cleaning . . . . . . . . . . . . . . . . . . . . . 245
Ambient lighting . . . . . . . . . . . . . . . . . . . . . . . 118
Anti-dazzle rear vision mirror . . . . . . . . . . . . . . 126
Anti-freeze protection Windscreen washer system . . . . . . . . . . . . 262
Anti-lock brake system . . . . . . . . . . . . . . . . . . . 222
Anti-theft alarm . . . . . . . . . . . . . . . . . . . . . . 87, 95 see also Anti-theft alarm system . . . . . . . . . 87
Anti-theft alarm system Interior monitoring . . . . . . . . . . . . . . . . . . . . 97
Tow-away protection . . . . . . . . . . . . . . . . . . 97
Anti-theft security system . . . . . . . . . . . . . . 87, 98
Anti-theft wheel bolts . . . . . . . . . . . . . . . . . . . 279
Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Aspects to take into account before starting the vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
ASR see Traction control system . . . . . . . . . . . . 222 Assistance systems . . . . . . . . . . . . . . . . . . . . . 184
ACC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
adaptive cruise control . . . . . . . . . . . . . . . 189
Cruise control . . . . . . . . . . . . . . . . . . . . . . . 184
monitoring system Front Assist . . . . . . . . . 202
Parking aid . . . . . . . . . . . . . . . . . . . . . . . . . 218
Assisted starting . . . . . . . . . . . . . . . . . . . . . . . 283
Assist systems Tyre monitoring indicator . . . . . . . . . . . . . . 216
Audible warning . . . . . . . . . . . . . . . . . . . . . . . . . 21
Auto Lock (central locking) . . . . . . . . . . . . . . . . 87
Automatic car washes see Washing . . . . . . . . . . . . . . . . . . . . . . . . 238
Automatic dipped beam control . . . . . . . . . . . 112
Automatic gearbox . . . . . . . . . . . . . . . . . . . . . . 173 Backup programme . . . . . . . . . . . . . . . . . . 181
Downhill speed control . . . . . . . . . . . . . . . 178
Driving tips . . . . . . . . . . . . . . . . . . . . . . . . . 176
Kick-down feature . . . . . . . . . . . . . . . . . . . . 179
Launch Control Programme . . . . . . . . . . . . 179
Manual release of selector lever . . . . . . . . 182
Safety interlock for ignition key . . . . . . . . . 163
Selector lever lock . . . . . . . . . . . . . . . . . . . 175
Selector lever positions . . . . . . . . . . . . . . . 173
Steering wheel with gearshift paddles . . . 178
tiptronic . . . . . . . . . . . . . . . . . . . . . . . 173, 178
B
Back support . . . . . . . . . . . . . . . . . . . . . . . . . . 129
325
Index