2008 AUDI S5 coolant temperature

Downloaded from www.Manualslib.com manuals search engine Driving 118brake the vehicle when the engine is switched off. This would
mean a greater risk of accidents and serious injury, because you
cannot steer and brake in the normal manner.
Caution
•
Avoid high engine speeds, full throttle and extreme load condi-
tions until the engine has reached its normal operating tempera-
ture, otherwise this can damage the engine.
•
The engine cannot be started by push-starting or towing.
•
If the engine has been working hard for a long time, there is a risk
of heat building up in the engine compartment after the engine has
been switched off; this could cause engine damage. For this reason,
you should leave the engine idling for about 2 minutes before
switching it off.
Switching off the engine with the Start/Stop button– Stop the vehicle.
– Automatic gearbox: Move the selector lever to position P
or N.
–Press the Start/Stop button ⇒page 116, fig. 132.Emergency Off function
Should it be necessary in an emergency, the engine can be switched
off when the selector lever is in position R, D or S. To switch off the
engine (max. speed 10 km/h) press and hold the Start/Stop button
and keep your foot on the brake.
WARNING
•
Never switch off the engine until the vehicle is stationary.
•
The brake servo and the power steering system work only
when the engine is running. You need more strength to steer and
brake the vehicle when the engine is switched off. This would
mean a greater risk of accidents and serious injury, because you
cannot steer and brake in the normal manner.Caution
If the engine has been working hard for a long time, there is a risk
of heat building up in the engine compartment after the engine has
been switched off; this could cause engine damage. For this reason,
you should leave the engine idling for about 2 minutes before
switching it off.
Note
After the engine is stopped the radiator fan may run on for up to
10 minutes, even if the ignition is switched off. The fan may also
start running again after some time if the coolant temperature rises
due to a build-up of heat, or if the engine is hot and the engine
compartment is heated up further by direct sunlight.
WARNING (continued)
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Downloaded from www.Manualslib.com manuals search engine Towing a trailer 200
WARNING
It is essential that you adjust your speed to suit the weather, road
and traffic conditions. Do not let the trailer stabilisation system
tempt you into taking any risks when driving – this can cause acci-
dents.•
The ESP and trailer stabilisation system cannot defy the laws
of physics. This should be kept in mind, particularly on slippery
and wet roads and when towing a trailer with a light load.
•
The trailer stabilisation system is functional, regardless of
whether the trailer has a mechanical overrun brake or not.
•
The trailer stabilisation system is not always able to detect
swaying of trailers with a light load and will therefore not inter-
vene.
•
A trailer can still “jack-knife” on slippery roads with little grip,
even if the towing vehicle is equipped with the trailer stabilisation
system.
•
Trailers with a high centre of gravity may even tip over before
they start to sway sideways.
•
If you are not towing a trailer, but the trailer socket is being
used (e.g. for an illuminated bicycle rack), the trailer stabilisation
system may be activated in extreme driving conditions.
•
Please note the additional information and warnings
⇒page 200.
Notes on towing
Driving with a trailer always requires extra care.Weight distribution
Try to avoid towing a loaded trailer with an unladen vehicle. If this
cannot be avoided, drive extra slowly to allow for the unbalanced
weight distribution.Speed
The stability of the car and trailer is reduced with increasing speed.
For this reason it is advisable not to drive at the maximum permis-
sible top speed in unfavourable road, weather or wind conditions.
This applies especially on a downhill gradient.
You should always reduce speed immediately if the trailer shows
the slightest sign of swaying. Never try to stop the swaying by accel-
erating further.
Always brake in good time. If the trailer has an overrun brake, apply
the brakes gently at first and then firmly. This will prevent the jerking
that can be caused by the trailer wheels locking. Change down in
good time before going down a steep hill so that you can use the
engine braking effect to slow down the vehicle.
Swaying and pitching can be reduced by stabiliser aids. We recom-
mend having stabiliser aids installed when towing trailers with a
high trailer weight. They can be purchased and installed at an Audi
dealer.
Overheating
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 11. Reduce speed immediately if the needle moves to
the top end of the scale. If the temperature warning lamp
 in the
instrument cluster should start flashing, stop the car and let the
engine cool down by running it at idling speed for a few minutes.
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Downloaded from www.Manualslib.com manuals search engine Checking and topping up fluids 226
CautionRadiator sealants must not be added to the coolant. Such additives
could seriously impair the function of the cooling system.Topping up the coolant
Be careful when topping up coolant.– Switch off the engine.
– Wait for the engine to cool down.
– Cover the cap on the expansion tank ⇒page 225, fig. 215
with a cloth, and carefully unscrew the cap anti-clock-
wise ⇒.
– Add coolant.
– Screw the cap on again tightly.Make sure that the coolant meets the required specifications
⇒page 224, “Coolant”. Do not use a different type of additive if anti-
freeze additive G12+, G12 or G11 is not available. In this case use
only water and bring the coolant concentration back up to the
correct level as soon as possible by putting in the specified additive.
Always top up with fresh, unused coolant.
Do not fill above the “MAX” mark. Excess coolant is forced out of the
system through the valve in the filler cap when the engine gets hot.
If a lot of coolant has been lost, wait for the engine to cool down
before putting in cold coolant. Failure to do so could result in
serious engine damage.
WARNING
•
The cooling system is under pressure. Do not unscrew the cap
on the expansion tank when the engine is hot: you could be
scalded by escaping steam
•
The coolant and coolant additive can be a health hazard. Store
the coolant additive in the original container in a safe place out of
reach of children – risk of poisoning.For the sake of the environment
Drained off coolant should not be used again. Drain off the used
coolant into a suitable container and dispose of it in the proper
manner (observe environmental regulations).Radiator fan
The radiator fan can start running spontaneously.The radiator fan is driven by the engine via a poly V-belt. The speed
of the fan is varied by a viscous clutch according to the temperature.
There is also an auxiliary electric fan, which cuts in automatically
whenever the temperature of the coolant and the engine compart-
ment rises above a certain level.
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 a while if•
residual 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 radi-
ator fan may start running suddenly – risk of injury.
document_0900452a81793dcc.book Seite 226 Mittwoch, 21. März 2007 5:42 17

Downloaded from www.Manualslib.com manuals search engine Index285
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data Blower
Deluxe automatic air conditioner . . . . 94
Deluxe automatic air conditioner plus . .
102
Bonnet
Closing . . . . . . . . . . . . . . . . . . . . . . . . . 221
Opening . . . . . . . . . . . . . . . . . . . . . . . . 220
Releasing . . . . . . . . . . . . . . . . . . . . . . . 220
Boot
SeeLoading luggage compartment . 158
SeeLuggage compartment . . . . . . . . . 75
Boot lid
Central locking system . . . . . . . . . . . . . 48
Manual release . . . . . . . . . . . . . . . . . . . . 49
Brake system
Brake assist system . . . . . . . . . . . . . . . 187
Brake fluid . . . . . . . . . . . . . . . . . . . . . . 227
Brake light defective . . . . . . . . . . . . . . . 36
Brake pads worn . . . . . . . . . . . . . . . . . . 36
Brake servo . . . . . . . . . . . . . . . . . . . . . . 189
Electro-mechanical parking brake . . . 119
General notes . . . . . . . . . . . . . . . . . . . . 189
Malfunction . . . . . . . . . . . . . . . . . . . . . . 31
Warning lamp . . . . . . . . . . . . . . . . . . . . 19
Bulb holder
Bayonet fastener . . . . . . . . . . . . . . . . . 266
Bulb monitor . . . . . . . . . . . . . . . . . . . . . . . . 36
Bulbs
Bayonet fastener . . . . . . . . . . . . . . . . . 266
Changing (general notes) . . . . . . . . . . 265
Bulbs, changing . . . . . . . . . . . . . . . . . . . . 265
Brake lights . . . . . . . . . . . . . . . . . . . . . 269
Bulb holder with bayonet fastener . . 266Front fog lights . . . . . . . . . . . . . . . . . . 268
Number plate light . . . . . . . . . . . . . . . 274
Rear fog light . . . . . . . . . . . . . . . . . . . . 272
Rear lights . . . . . . . . . . . . . . . . . . . . . . 269
Reversing light . . . . . . . . . . . . . . . . . . . 272
Turn signals (rear) . . . . . . . . . . . . . . . . 269
Business equipment . . . . . . . . . . . . . . . . . 240
CCapacities . . . . . . . . . . . . . . . . . . . . . . . . . . 279
Car keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Care of vehicle . . . . . . . . . . . . . . . . . . . . . . 210
Catalytic converter . . . . . . . . . . . . . . . . . . 195
Central locking system . . . . . . . . . . . . . . . . 42
Boot lid . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Deadlock mechanism . . . . . . . . . . . . . . 45
Fuel tank flap . . . . . . . . . . . . . . . . . . . . 217
Locking . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Locking and unlocking the vehicle from
inside . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Manual locking . . . . . . . . . . . . . . . . . . . . 47
Opening and closing windows . . . . . . . 50
Switches on driver's door . . . . . . . . . . . 46
Unlocking . . . . . . . . . . . . . . . . . . . . . . . . 45
Changing a wheel . . . . . . . . . . . . . . . . . . . 250
Changing bulbs
SeeBulbs . . . . . . . . . . . . . . . . . . . . . . . 265
Chassis number . . . . . . . . . . . . . . . . . . . . . 279
Child safety . . . . . . . . . . . . . . . . . . . . . . . . 175
Child safety seat . . . . . . . . . . . . . . . . . . . . 176
Child seat categories . . . . . . . . . . . . . . 176
Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . 179ISOFIX system . . . . . . . . . . . . . . . . . . . . 181
On front passenger's seat . . . . . . . . . . 176
Safety notes . . . . . . . . . . . . . . . . . . . . . 175
Cigarette lighter . . . . . . . . . . . . . . . . . . . . . . 85
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Cleaning Alcantara . . . . . . . . . . . . . . . . . . 216
Cleaning seat covers
Alcantara . . . . . . . . . . . . . . . . . . . . . . . . 216
Natural leather . . . . . . . . . . . . . . . . . . . 215
Textile covers . . . . . . . . . . . . . . . . . . . . 213
Cleaning textile covers and trim parts . . 213
Clock, setting . . . . . . . . . . . . . . . . . . . . . . . . 13
Closing
Bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . 221
Coat hooks . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Colour code . . . . . . . . . . . . . . . . . . . . . . . . 279
Compact temporary spare wheel
SeeSpare wheel . . . . . . . . . . . . . . . . . . 246
Compartment for (sun)glasses . . . . . . . . . 89
Compass in mirror . . . . . . . . . . . . . . . . . . . . 68
Controls and displays
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Convenience close function . . . . . . . . . . . . 50
Convenience open function . . . . . . . . . . . . 50
Cooling system
Anti-freeze additive . . . . . . . . . . . . . . . 224
Checking coolant level . . . . . . . . . . . . 225
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . 224
Coolant temperature gauge . . . . . . . . . 11
Malfunction . . . . . . . . . . . . . . . . . . . . . . 32
Radiator fan . . . . . . . . . . . . . . . . . . . . . 226
Topping up coolant . . . . . . . . . . . . . . . 226
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