Intelligent technology
194
NoteIf the ABS warning lamp lights up, this can also mean there is a fault in the
EDL. Please take the vehicle to a qualified workshop as soon as possible.Traction control system (TCS)
The traction control system prevents the drive wheels from
spinning when the vehicle is accelerating.General notes
The traction control system (TCS) is one of the functions incorporated in the
Electronic Stability Programme (ESP).
The traction control system (TCS) helps the vehicle to start moving, accelerate
or climb a gradient in slippery conditions where this may otherwise be diffi-
cult or even impossible.
How it works
The TCS acts automatically, without the driver's intervention. With the aid of
the ABS sensors ⇒page 192, the TCS monitors the speed of the drive
wheels. If the wheels start to spin, the engine speed is reduced automatically
to match the amount of grip available. The system is active across the entire
speed range.
The TCS works in conjunction with the ABS. If a malfunction occurs in the ABS,
the TCS will also be inoperative.
Note
To ensure that the TCS works properly, all four wheels must be fitted with
identical tyres. The difference in size of the wheels may lead to an undesired
reduction in engine power. Also see ⇒page 251.
BrakesGeneral notesNew brake pads
New brake pads do not provide optimal performance during the first 200 km;
first they must be “run in”. However, the reduced braking capacity may be
compensated by pressing on the brake pedal a little harder. Avoid over-
loading the brakes during run-in.
Wear
T h e r a t e o f we a r o n t h e brake pads depends a great deal on how you drive and
the conditions in which the vehicle is operated. Negative factors are, for
instance, city traffic, frequent short trips or hard driving with abrupt starts
and stops.
Wet roads or road salt
In certain conditions, such as in heavy rain, or after washing the vehicle or
driving through water, the full braking effect can be delayed by moisture (or
in winter by ice) on the discs and brake pads. In this case the brakes should
be dried by pressing the brake pedal several times.
When the speed is over 80 km/h and the windscreen wipers are on, the brake
system moves the pads towards the brake discs for a few seconds. This
occurs - without the driver knowing - at regular intervals and allows a faster
response from the brakes when driving on wet roads.
The effectiveness of the brakes can also be temporarily reduced if the vehicle
is driven for some distance without using the brakes when there is a lot of salt
on the road in winter. In this case, the layer of salt on the brake discs and pads
has to wear off before braking.
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Driving and the environment
200Avoid driving at high speed
We advise you not to drive at the top speed permitted by the vehicle. Fuel
consumption, exhaust emissions and noise levels all increase very rapidly at
higher speeds. Driving at moderate speeds will help to save fuel.
Avoid idling
It is worthwhile switching off the engine when waiting in a traffic jam, at level
crossings or at traffic lights with a long red phase. The fuel saved after only
30 - 40 seconds is greater than the amount of fuel needed to restart the
engine.
The engine takes a very long time to warm up when it is running at idling
speed. Mechanical wear and pollutant emissions are also especially high
during this initial warm-up phase. It is therefore best to drive off immediately
after starting the engine. Avoid running the engine at high speed.
Periodic maintenance
Periodic maintenance work guarantees that, before beginning a journey, you
will not consume more than the required amount of fuel. A well-serviced
engine gives you the benefit of improved fuel efficiency as well as maximum
reliability and an enhanced resale value.
A badly serviced engine can consume up to 10% more fuel than necessary.
Avoid short journeys
To reduce the consumption and emission of polluting gases, the engine and
the exhaust filtration systems should reach the optimum service tempera-
ture .
With the engine cold, fuel consumption is proportionally higher. The engine
does not warm up and fuel consumption does not normalise until having
driven approximately four kilometres. This is why we recommend avoiding
short trips whenever possible.
Maintain the correct tyre pressures
Bear in mind that keeping the tyres at an adequate pressure saves fuel. If the
tyre pressure is just 1 bar too low, fuel consumption can increase by as much as 5%. Due to the greater rolling resistance, under-inflation also increases
tyre wear
and impairs handling.
The tyre pressures should always be checked when the tyres are cold.
Do not use winter tyres all year round as they increase fuel consumption by
up to 10%.
Avoid unnecessary weight
Every kilo of extra weight will put up the fuel consumption, so it is worth
checking the luggage compartment occasionally to make sure that no unnec-
essary loads are being transported.
A roof rack is often left in place for the sake of convenience, even when it is
no longer needed. At a speed of 100-120 km/h your vehicle will use about
12% more fuel as a result of the extra wind resistance caused by the roof rack
even when it is not in use.
Save electricity
The engine activates the alternator, which produces electricity. With the need
for electricity, fuel consumption is also increased. Because of this, always
turn off electrical components when you do not need them. Examples of
components that use a lot of electricity are: the fan at high speeds, the rear
window heating or the seat heaters*.
Note
•If you vehicle has Start-Stop, it is not recommended to disconnect this
function.•It is recommended to close the windows when driving at more than 60
km/h•Do not drive with your foot resting on the clutch pedal, as the pressure can
make the plate spin, more fuel will be used and it can burn the clutch plate
lining, causing a serious fault.
ExeoST_EN.book Seite 200 Freitag, 3. September 2010 11:41 11
Trailer towing
204Where possible, operate the trailer with the maximum permitted drawbar
load on the ball joint of the towing bracket, but do not exceed the specified
limit.
Tyre pressure
Check the tyre pressures on your vehicle, and adjust for “full load” conditions
(refer to the sticker listing the tyre pressures on the door pillar). It may also be
necessary to adjust the tyre pressures on the trailer according to the recom-
mendations of the trailer manufacturer.
Exterior mirrors
Check whether you can see enough of the road behind the trailer with the
standard mirrors. If this is not the case you should have additional mirrors
fitted. The two exterior mirrors should be fitted on folding arms. Adjust the
mirrors to give sufficient rear vision.
Headlights
Before starting a journey, check the headlight beam settings with the trailer
hitched up. If necessary, alter the height of the headlight beams by means of
the headlight range control. See ⇒page 120.
Power supply
When you remove the ignition key, the power supply to the trailer is inter-
rupted.
Removable ball joint coupling
Vehicles with a factory-fitted towing bracket are equipped with a removable
ball joint coupling. This is stored in the spare wheel well in the luggage
compartment together with the necessary fitting instructions.
Note
If you frequently tow, we recommend you also have the vehicle serviced
between services.
Notes on towing
Towing a trailer involves additional attention by the driver.Weight distribution
The weight distribution of a loaded trailer with an unladen vehicle is very
unfavourable. However, if this cannot be avoided, drive extra slow to allow for
the unbalanced weight distribution.
Speed
The stability of the vehicle and trailer is reduced with increasing speed. There-
fore, it is advisable not to drive at the maximum permissible speed in unfa-
vourable road, weather or wind conditions. This especially applies when
driving downhill.
You should always reduce speed immediately if the trailer shows the slightest
sign of swaying . Never try to stabilise the trailer by accelerating.
Anticipate hazards and brake in good time. If towing a trailer with an inertia
brake , first brake gently and then harder. This will prevent brake tapping by
the trailer wheels when they lock. Select a low gear in due course before
going down a steep downhill. This enables you to use the engine braking to
slow down the vehicle.
Swaying and pitching can be reduced by stabiliser aids. We recommend
having stabiliser aids installed when towing trailers with a high trailer weight.
They can be purchased and installed at a Technical Service.
Reheating
When climbing long hills in hot weather with the engine running fast in low
gear, you should keep an eye on the coolant temperature gauge ⇒page 60.
Reduce speed immediately if the needle moves to the right end of the scale.
If the temperature warning lamp
v in the instrument panel should start
flashing, stop the vehicle and let the engine cool down by running it at idling
speed for a few minutes.
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Checking and refilling levels
230•Never touch the radiator fan while the engine is hot, as the fan could
start up suddenly.•Never open the expansion tank when the engine is hot. The cooling
system is under pressure.•Protect face, hands and arms from any hot steam or hot coolant fluid
released by covering the cap with a large, thick rag when opening the
expansion tank.•If any tests have to be performed with the engine running, there is an
added safety risk from the rotating parts (e.g. drive belts, alternator, radi-
ator fan, etc.) and from the high-voltage ignition system.•Observe the following additional warnings if work on the fuel system or
the electrical system is necessary:
−Always disconnect the battery.
− Do not smoke.
− Never work near open flames.
− Always keep an approved fire extinguisher immediately available.Caution
When topping up fluids, make sure the correct fluid is put into the correct
filler opening. This can otherwise cause serious malfunctions or engine
damage.
For the sake of the environment
Inspect the ground underneath your vehicle regularly so that any leaks are
detected at an early stage. If you find spots of oil or other fluids, have your
vehicle inspected at the workshop.
Note
On right-hand drive vehicles some of the reservoirs mentioned below are
located on the other side of the engine compartment.Closing the bonnet– To close the bonnet, push it down until it overcomes the spring
pressure.
– Let the bonnet engage in the locking part. Do not force it ⇒ .
WARNING
•For safety reasons the bonnet must always be completely closed when
the vehicle is moving. After closing it always check that it is properly
secured. The bonnet must be flush with the adjacent body panels.•Should you notice that the bonnet is not safely secured when the
vehicle is moving, stop the vehicle immediately and close the bonnet.
Failure to do so could result in an accident.
Engine oilGeneral notesThe engine comes with a special, high quality, multi grade oil that can be
used in all seasons of the year except for those regions affected by extreme
cold.
WARNING (continued)
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Checking and refilling levels
236Radiator fan
The radiator fan can start running spontaneously.The auxiliary fan can continue to run for as long as 10 minutes after stopping
the engine, even after the ignition is switched off. It may also start running
suddenly ⇒ after some while if•Stored heat raises the coolant temperature, or•The hot engine compartment is additionally heated up by the sun.WARNING
When working in the engine compartment be aware that the radiator fan
may start running suddenly, leading to the risk of injury.
Washer fluid and windscreen wiper bladesWindscreen washer system
Plain water is not sufficient for the windscreen washer
system.The container for the windscreen washer contains the cleaning fluid for the
windscreen and the headlight washer system*. The container is located in the
engine compartment (front left). The fi ller cap is marked with the symbol
W
⇒ fig. 180.
The capacity of the container is listed in ⇒page 301.
Plain water on its own is not enough to clean the glass properly. It is therefore
advisable to add a suitable washer fluid additive (with wax solvent) to the
water. A washer fluid with freeze-resistant additive should be used in winter.
Fig. 180 In the engine
compartment: Cap of
windscreen washer fluid
reservoir.
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Wheels and tyres
250Run-flat tyres*
Run-flat tyres allow you to continue driving even with a punc-
tured tyre, in the majority of cases.In vehicles that are factory-fitted with run-flat tyres
3) the loss of tyre
pressure is indicated on the instrument panel.
Driving with run-flat tyres (emergency running)
– Leave the ESP/TCS (Electronic Stability Programme) switched on, or switch on ⇒ page 68.
– Continue driving carefully and slowly (80 km/h maximum).
– Avoid sudden manoeuvres and sharp turns.
– Avoid driving over obstacles (for example kerbs) or potholes.
– Look out for the ESP/TCS intervening often, smoke coming from the tyres or the smell of rubber, the vehicle vibrating or a clat-
tering noise. If any of these occur, stop the vehicle.
The run-flat tyres have a tag on the side of the tyre, with the description:
“DSST”, “Eufonia”, “RFT”, “ROF”, “RSC”, “SSR” or “ZP”.
The sides of this type of tyre are reinforced. When the tyres lose air they are
supported on the sides (emergency driving).
The loss of pressure in the tyre is shown on the instrument panel. You can
then drive a maximum of 80 km and if the circumstances are favourable (for
example, low load), even more.
The damaged tyre should be changed as soon as possible. The rim should be
checked in a specialist workshop to detect possible damage and replace it if necessary. We recommend you contact Technical Service. If more than one
tyre is being used under emergency co
nditions, this reduces the distance
which can be travelled.
Starting driving in emergency conditions
When loss in tyre pressure is displayed on the instrument panel, this means
that at least one tyre is being driven in emergency conditions ⇒.
End of emergency operation
Do not drive on if:
•smoke is coming from one of the tyres,•there is a smell of rubber,•the vehicle vibrates,•there is a rattling noise.
When is it no longer possible to continue driving even using run-flat tyres?•If the Electronic Stability Programme (ESP) is out of operation.•If the tyre pressure monitoring system* does not work.•If one of the tyres has been severely damaged in an accident, etc. If a tyre
has been badly damaged there is a risk that parts of the tread can be thrown
off and cause damage to the fuel lines, brake pipes or fuel filler.•It is also advisable to stop driving if severe vibrations occur, or if the wheel
starts overheating and gives off smoke.WARNING
When driving in emergency conditions, the driving quality of the vehicle is
considerably impaired.•The maximum permitted speed of 80 km/h is subject to road and
weather conditions. Please observe legal requirements when doing so.•Avoid sharp turns and rapid manoeuvres, and brake earlier than usual.•Avoid driving over obstacles (for example kerbs) or potholes.
3)Depending upon version and country.
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Index
316Electronic Stability Programme
Description . . . . . . . . . . . . . . . . . . . . . . . . . 172
How the system works . . . . . . . . . . . . . . . . 191
Warning lamp . . . . . . . . . . . . . . . . . . . . . . . 173
Emergencies Changing a wheel . . . . . . . . . . . . . . . . . . . . 257
Disconnecting the battery . . . . . . . . . . . . . 241
Jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254, 259
Sunroof emergency activation . . . . . . . . . . 114
Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Tyre mobility system . . . . . . . . . . . . . . . . . . 255
Engine Running in . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Engine compartment Safety instructions . . . . . . . . . . . . . . . . . . . 229
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230 Checking oil level . . . . . . . . . . . . . . . . . . . . 232
Consumption . . . . . . . . . . . . . . . . . . . . . . . . 232
Oil pressure too low . . . . . . . . . . . . . . . . . . . 78
Oil properties . . . . . . . . . . . . . . . . . . . . . . . . 231
Oil sensor defective . . . . . . . . . . . . . . . . . . . 80
Topping up . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Engine speed governing . . . . . . . . . . . . . . . . . . . 80
Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . 199 Environmental friendliness . . . . . . . . . . . . 201
Roof racks . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Environmental tip Avoiding pollution . . . . . . . . . . . . . . . . . . . . 226
Environmentally friendly driving . . . . . . . . . . . 199 ESP
See Electronic Stability Programme . . . . . . 172
Exhaust gas purification system . . . . . . . . . . . 198
Exterior mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 217
FFabric trim cleaning . . . . . . . . . . . . . . . . . . . . . 221
Fastening rings . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Fog lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Front airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Description . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Front drink holder . . . . . . . . . . . . . . . . . . . . . . . 153
Front passenger airbag deactivation . . . . . . . . . 44
Fuel Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Fuel level low . . . . . . . . . . . . . . . . . . . . . . . . . 80
Instantaneous fuel consumption . . . . . . . . . 85
Petrol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Fuel tank opening the fuel tank flap . . . . . . . . . . . . . 225
Fuel: save . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Fuse Assignment . . . . . . . . . . . . . . . . . . . . . . . . . 266
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
GGear display . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Gear shift pattern . . . . . . . . . . . . . . . . . . . . . . . 183
General overview of the engine compartment 301
Glove compartment . . . . . . . . . . . . . . . . . . . . . 159Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
GRA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180HHandbrake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Hazard warning lights . . . . . . . . . . . . . . . . . . . . 122
Head restraint Rear seat . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Head restraints Front seats . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Rear seats . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Removing and fitting . . . . . . . . . . . . . . . . . 141
Headlight range control . . . . . . . . . . . . . . . . . . 120 Dynamic . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Faulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Headlights Adaptive headlights . . . . . . . . . . . . . . . . . . 122
Automatic headlight control . . . . . . . . . . . 117
Automatic headlight control photosensors 117
Coming home function . . . . . . . . . . . . . . . . 119
Driving abroad . . . . . . . . . . . . . . . . . . . . . . . 202
Front fog lights . . . . . . . . . . . . . . . . . . . . . . 118
Headlight range control . . . . . . . . . . . . . . . 120
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Index
320Sliding/tilting sunroof . . . . . . . . . . . . . . . . . . . 112
Automatic close function . . . . . . . . . . . . . . 113
Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Emergency activation . . . . . . . . . . . . . . . . . 114
Manual operation . . . . . . . . . . . . . . . . . . . . 114
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Snow chains . . . . . . . . . . . . . . . . . . . . . . . 253, 300
Solar sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Solar-powered blower/sunroof . . . . . . . . . . . . 171
Spare keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Spare wheel Steel rim . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
Speed warning . . . . . . . . . . . . . . . . . . . . . . . 81, 82
Speed warning function . . . . . . . . . . . . . . . . . . . 82
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Steam jets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Steering Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Manual steering wheel adjustment . . . . . . 172
Steering wheel controls . . . . . . . . . . . . . . . . . . . 91
Stopping the engine . . . . . . . . . . . . . . . . . . . . . 175
Sun visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Switches in the driver door Electric windows . . . . . . . . . . . . . . . . . . . . . 110
Symbols Red symbols in central display . . . . . . . . . . 77
Yellow symbols in central display . . . . . . . . 79
TTailgateCentral locking system . . . . . . . . . . . . . . . . 103
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
TCS How the system works . . . . . . . . . . . . . . . . 194
Technical modifications . . . . . . . . . . . . . . . . . . 223
The danger of not using the seat belt . . . . . . . . 20
The environment Heated rear window . . . . . . . . . . . . . . . . . . 127
Leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Warming up the engine . . . . . . . . . . . . . . . 174
Tightening torque of wheel bolts . . . . . . . . . . . 300
tiptronic . . . . . . . . . . . . . . . . . . . . . . . . . . . 183, 189
Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Tow starting General notes . . . . . . . . . . . . . . . . . . . . . . . 294
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203, 294 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . 205
Notes on towing . . . . . . . . . . . . . . . . . 203, 204
Removable towing bracket . . . . . . . . . . . . . 206
Technical requirements . . . . . . . . . . . . . . . 203
Towing a trailer . . . . . . . . . . . . . . . . . . . . . . . . . 299
Towing bracket, fitting . . . . . . . . . . . . . . . . . . . 212
Towing eye . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Towing eyes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Tow-starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Traction control system How the system works . . . . . . . . . . . . . . . . 194
Trailer weights . . . . . . . . . . . . . . . . . . . . . . . . . . 299 Trip recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Turn signal lamps
Hazard warning lights . . . . . . . . . . . . . . . . . . 68
Trailer turn signals . . . . . . . . . . . . . . . . . . . . 67
Turn signals . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Turn signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Tyre Mobility System . . . . . . . . . . . . . . . . . . . . . 262
Tyre mobility system . . . . . . . . . . . . . . . . . . . . . 255
Tyre pressure . . . . . . . . . . . . . . . . . . . . . 66, 90, 245 Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Tyre pressure monitoring . . . . . . . . . . . . . . . . . 246
Tyre pressure monitoring system . . . . . . . . . . . . 89
Tyre pressures . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Tyre repair kit Tyre Mobility System . . . . . . . . . . . . . . . . . . 262
Tyres and wheels Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 251
Tyres service life . . . . . . . . . . . . . . . . . . . . . . . . 248
Tyres tread depth . . . . . . . . . . . . . . . . . . . . . . . 249
Tyres with directional tread pattern . . . . . . . . . 245
UUnderbody protection . . . . . . . . . . . . . . . . . . . . 219VVehicle data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
Vehicle identification data . . . . . . . . . . . . . . . . 298
Vehicle identification number . . . . . . . . . . . . . 298
Vehicle keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
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