2004 SKODA SUPERB cooling

Towing a trailer
190
Towing a trailer
Towing a trailer
Technical requirements
The towing device must satisfy certain technical require-
ments.
Your vehicle is designed primarily for transporting persons and luggage.
It can, however, also be used for towing a trailer - provided certain tech-
nical equipment is fitted.
If your vehicle has already been supplied with a factory-fitted towing
device then everything that is necessary for towing a trailer in technical
terms, and in terms of the law, has already been taken into account.
Your vehicle is fitted with a 13-pin power socket for the electrical connec-
tion between the vehicle and trailer. If the trailer which you wish to tow has
a 7-pin connector , you can use a suitable adapter cable. You can obtain
such an adapter from a Škoda dealer.
This work must be carried out in accordance with the manufacturer's
specifications if a towing device is retrofitted.
Škoda dealers are familiar with details relating to retrofitting a towing
device and for any necessary modifications to the cooling system.
WARNING
We recommend that you have the towing device installed by a
Škoda dealer. He is familiar with all the relevant details relating to
retrofitting such equipment. There is a risk of an accident if the
towing device is not properly fitted!
General Maintenance
There are a number of points to pay attention to when
towing a trailer.
Trailer load
The permissible trailer load must on no account be exceeded.
You can negotiate appropriately steeper inclines and descents if you do
not make full use of the permissible trailer load.
The trailer loads specified only apply for altitudes up to 1 000 metres
above mean sea level. The fact that the engine power output drops with
increasing height due to a lowering of air pressure and thus the ability to
climb, means that the towed weight must be reduced by 10% for every
further increase of 1 000 metres in height above sea level. The towed
weight is the weight of the (laden) vehicle and the (laden) trailer together.
One should take this into account before driving up to higher altitudes.
The trailer and drawbar load information on the type plate of the
towing device are merely test data for the towing device The data
relating to your vehicle, which is often less than this test data, can
be found in your vehicle registration documents or in the brochure -
Technical Data .
Distribution of the load
Distribute the load in the trailer in such a way that any heavy items are
located as close as possible to the axle. Secure the items to prevent them
slipping.

Towing a trailer
192
before negotiating a downhill section to allow the engine to also act as a
brake.
Engine overheating
Please keep a check on the coolant temperature gauge if you have to
negotiate a lengthy slope in a low gear at a high engine speed when the
outside temperature is very high ⇒page 14.
If the needle of the coolant temperature gauge moves into the right-hand
area or even the red area of the scale, reduce your speed immediately.
Stop and switch off the engine if the warning light
 in the instrument
cluster begins flashing. Wait a few minutes and check the level of coolant
in the coolant expansion bottle ⇒page 215, “Inspecting the coolant level”.
Please refer to the following guidelines ⇒page 31, “Coolant tempera-
ture/coolant level ”.
The coolant temperature can be reduced by switching on the heating.
Any increase in the cooling effect of the coolant fan through shifting down
a gear and increasing the engine speed is not possible since the fan
speed is independent of the engine speed. One should also not drop a
gear for this reason when towing a trailer as long as the engine can
manage the slope without any drop in speed.
Detachable towing device*
The detachable ball head of the towing device is stowed in the spare
wheel well in the luggage compartment.
An instruction for correct installation and removal of the ball head of the
towing device is supplied with the ball head
Inspect the ball head to ensure that it is properly locked each time before
setting off. The inspection is performed by turning the closed locking lever
downwards. If the locking lever can only be turned approx. 5°, the locking
mechanism is O.K. After the inspection pull the locking lever back again
to its stop. The towing device must not be used, if it does not wish to close
or the locking lever turns slightly in the closed position.
WARNING
Do not use any aids or tools for installing or removing the ball
head. This might result in damage to the locking mechanism to the
Fig. 155 Detachable
ball head

Inspecting and Replenishing209
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
– Allow the bonnet to drop from a height of about 30 cm into the
lock - bonnet do not press down on it!
The bonnet is held in the opened position by a pressurized gas spring.
WARNING
•Never open the bonnet if you see that steam or coolant is
flowing out of the engine compartmen t - risk of scalding! Wait long
enough until the steam or coolant has stopped escaping.
•For safety reasons, the bonnet must always be properly closed
when driving. One should therefore check that the lock has in fact
engaged properly after closing the bonnet.
•Stop your vehicle immediately while driving if you notice that
the lock is not properly engaged and close the bonnet properly -
risk of an accident!
Caution
•Never open the bonnet using the handle - danger of causing damage.
•Before opening the bonnet, ensure that the arms of the windscreen
wipers are correctly in place against the windscreen. Otherwise, there is
a risk of damage to the paintwork.
Working in the en gine compartment
Particular care is required when carrying out any work in
the engine compartment!
There is a risk of injuries, scalding , accidents and fire when working
in the engine compartment, e.g. inspecting and replenishing oil and
other fluids. For this reason, it is essential to comply with the warning instructions stated below and with the general applicable
rules of safety. The engine compartment of your car is a hazardous
area
⇒ .
WARNING
•Never open the bonnet if you see that steam or coolant is
flowing out of the engine compartment - risk of scalding! Wait long
enough until the steam or coolant has stopped escaping.
•Switch off the engine and pull out the ignition key.
•Apply the handbrake firmly.
•If your vehicle is fitted with a manual gearbox, move the gear-
shift lever into Neutral, or if it is fitted with automatic gearbox,
move the selector lever into position P.
•Allow the engine to cool down.
•Keep children clear of the engine compartment.
•Do not touch any hot engine parts - risk of burns!
•Never spill oil and other fluids over the hot engine. Such fluids
(e.g. the antifreeze contained in the coolant) may ignite!
•Avoid short circuits in the electrical system - particularly on the
battery.
•Never place your hand into the radiator fan as long as the
engine is still warm. The fan might suddenly start running!
•Never open the cap of the coolant expansion bottle as long as
the engine is still warm. The cooling system is pressurized!
•Cover over the cap of the coolant expansion reservoir with a
large cloth when opening it as protection for your face, hands and
arms from hot steam or hot coolant.
•Do not let objects, such as e.g cleaning cloth or tools lie in the
engine compartment.

Inspecting and Replenishing
214
•Wear an eye protection - risk of caustic burns due to oil
splashes.
•Oil is toxic! Store old oil in a safe place out of the reach of chil-
dren and unauthorized persons until you dispose of it properly.
Caution
You must not pour any additives into the engine oil - risk of engine
damage! Damage, which results from such product, are excluded from the
warranty.
For the sake of the environment
•You must on no account pour oil into the ground or into the sewage
system.
•In view of the problems involved in properly disposing of old oil, the
material, equipment and the knowledge required for such work, we recom-
mend that you have the oil and oil filter change carried out by your Škoda
dealer.
Note
After your skin has come in contact with the oil, you must thoroughly wash
your skin.
Cooling system
Coolant
The job of the coolant is to cool the engine.
The cooling system does not require any maintenance under normal oper-
ating conditions. The coolant consists of water with a concentration of
antifreeze agent of 40 %. This mixture not only provides antifreeze protec-
tion down to -25°C but also protects the cooling and heating system from
corrosion. It also prevents the formation of scale and significantly
increases the boiling point of the coolant.
You must therefore not reduce the concentration of antifreeze agent in the
coolant by adding water, also not during the summer months or in coun-
tries with a warm climate. The concentration of coolant additive in the
coolant must be at least 40%.
You can increase the amount of antifreeze in the coolant iIf a higher
concentration of antifreeze is necessary for climatic reasons but only up
to 60% (antifreeze protection down to approx. -40°C). The antifreeze
protection tails off above that concentration.
Vehicles exported to countries with a cold climate (e.g. Sweden, Norway,
Finland) are already factory-filled with a coolant which offers antifreeze
protection down to about -35°C. In these countries the concentration of
coolant additive should be at least 50 %.
Coolant
The cooling system is filled at the works with coolant (purple in colour),
which complies with the specification TL-VW 774 F.
We recommend that you use the antifreeze agent - G12 PLUS (purple in
colour).
Please contact your Škoda dealer if you have any questions regarding the
coolant or if you wish to fill up with a different coolant.
WARNING (continued)

Inspecting and Replenishing215
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
Your Škoda dealer can also supply you with the correct coolant additives.
Caution
•Other coolant additives may cause operational problems which,
in particular, involves significantly reducing the anticorrosion effect.
•Any faults or problems resulting from corrosion may cause a loss
of coolant and, as a consequence of this, result in major engine
damage.
Inspecting the coolant level
The coolant expansion bottle is located in the engine compart-
ment on the left.
– Switch the engine off. – Open the bonnet
⇒ in “Working in the engine compart-
ment” on page 209.
– Check the level of coolant in the coolant expansion bottle ⇒fig. 162. The coolant level when the engine is cold must lie
between the “MIN” and “MAX” markings. The level may also
rise slightly above the “MAX” marking when the engine is
warm.
If the coolant level in the reservoir is too low, this is indicated by the
warning light in the instrument cluster  ⇒ page 28. We nevertheless
recommend inspecting the coolant level directly at the reservoir from time
to time.
Loss of coolant
A loss of coolant is first and foremost an indication of a leak in the
system. You should not merely top up the coolant in the reservoir. It is also
important to have the cooling system inspected without delay by a Škoda
dealer.
Losses can only occur through the pressure relief in the cap of the coolant
expansion bottle which is completely free of leaks if the coolant boils as a
result of overheating and is forced out of the cooling system.
WARNING
Read and observe the warning notes ⇒page 209, “Working in the
engine compartment” before working in the engine compartment.
Caution
One should contact a Škoda dealer as soon as possible if the source of
overheating itself cannot be determined and removed, since there may be
grave damage to the engine.
Fig. 162 Engine
compartment: Coolant
expansion bottle

Inspecting and Replenishing
216
Replenishing the coolant
– Switch the engine off.
– Allow the engine to cool down.
– Place a cloth over the cap of the coolant expansion reservoir
⇒page 215, fig. 162 and unscrew the cap carefully by
turning it to the left ⇒.
– Top up the coolant.
– Screw on the cap tight until it is heard to lock.
The coolant which you use for replenishing the system, must comply with
one specific specification ⇒page 214, “Coolant”. Do not use an alterna-
tive additive if the coolant additive G12 PLUS is not available in excep-
tional cases. Just top up the system with water and as soon as possible
arrange adjustment to correct the mixing ratio of water and coolant addi-
tive again by a Škoda dealer.
Only use fresh coolant for topping up the system.
Do not fill up over the “MAX” marking! Excess coolant which is heated up
is forced out of the cooling system through the pressure relief valve in the
cap of the coolant compensation bottle.
Wait until the engine has cooled down for a system which has suffered a
major loss of coolant before pouring in coolant. This is necessary to avoid
engine damage.
Do not continue your journey if for some reason it is not possible
under the conditions prevailing to top up with coolant. Switch off the
engine and obtain professional assistance from a Škoda dealer.
WARNING
•The cooling system is pressurized! Do not open the cap of the
coolant expansion bottle if the engi ne is still hot - risk of scalding!
•The coolant additive and thus all of the coolant is harmful to
your health. Avoid contact with the coolant. Coolant vapours are
also harmful to the health. It is important, therefore, to always
safely store any coolant additive in its original container out of the
reach of children - risk of poisoning!
•If any splashes of coolant get into your eyes, rinse out your eyes
immediately with clear water and contact a doctor as soon as
possible.
•You should also consult a doctor without delay if you have inad-
vertently swallowed coolant.
For the sake of the environment
Do not re-use coolant if it is necessary to drain the coolant in the system.
It should be collected and disposed of in compliance with environmental
protection regulations.
The radiator fan
The radiator fan may switch on suddenly.
The radiator fan is driven by an electric motor and controlled by a thermo-
stat according to the coolant temperature.
The radiator fan may continue running for up to 10 minutes after the
engine has been switched off - even if the ignition is also off. It may also
switch on suddenly after a certain time, if
•the coolant temperature has risen because of an accumulation of heat
or

Wheels and Tyres
230
Wheel bolts
Wheels and wheel bolts are matched to each other in terms of design.
Each time you fit other wheels - e.g. light alloy wheels or wheels with
winter tyres - you must therefore also use the matching wheel bolts of the
correct length and shape of spherical cap. This is essential to ensure that
the wheels are tightly fitted and that the brake system operates properly.
If you retrofit wheel trims (or have this done), please also ensure that an
adequate flow of air remains assured for cooling the brake system.
Škoda dealers are instructed in the technical possibilities which exist
regarding converting or retrofitting wheels, tyres and wheel trim.
WARNING
•In case of incorrect treatment of the wheel bolts, the wheel can
loosen when the car is moving - risk of accident!
•The wheel bolts must be clean and must turn easily. However,
they must never be treated with grease or oil.
•If the wheel bolts are tightened to a too low tightening torque,
the rim can lossen when the car is moving - risk of accident! A tight-
ening torque which is too high can damage the bolts and threads
and this can result in perman ent deformation of the contact
surfaces on the rims.
Caution
The prescribed tightening torque of the wheel bolts for steel and light alloy
wheels is 120 Nm.
Winter tyres
The handling of your vehicle will be significantly improved when driving on
wintry roads and at temperatures below 7 °C if you fit winter tyres.
Summer tyres do not offer the same grip on ice and snow because of their
construction (width, rubber blend, tread pattern). This applies in particular
to vehicles which are equipped with low-profile tyres or high-speed
tyres (code index V, W or Y on wall of tyre).
Winter tyres must be mounted on all four wheels to obtain the best
handling characteristics.
Only use radial winter tyres.
You must only fit those types of winter tyre which are approved for your
vehicle. The permissible sizes of winter tyres are stated in your vehicle
documents. Approvals may differ because of national legislation.
Please remember that the tyres should be inflated to 20 kPa (0.2 bar)
more than is the case for summer tyres ⇒page 226.
Winter tyres no longer offer the same winter performance once the tyre
tread has worn down to a depth of about 4 mm.
Ageing also causes winter tyres to lose most of their winter performance
properties - even in cases where the remaining tread depth is still clearly
more than 4 mm.
Speed restrictions apply to winter tyres as well as to summer tyres
⇒ .
You can fit winter tyres of a lower speed category to your vehicle provided
that you also do not drive faster than the permissible maximum speed for
such tyres, even if the possible maximum speed of your vehicle is higher.
The corresponding tyre category can damage the tyres when exceeding
the permissible maximum speed.
Please pay attention to the notes if you decide to fit winter tyres
⇒ page 225.

Index
262
Child safety seats
ISOFIX system . . . . . . . . . . . . . . . . . . . 173
Child seat . . . . . . . . . . . . . . . . . . . . . . . . . . 168 attach . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Child seat protection . . . . . . . . . . . . . . . 171
Classification into groups . . . . . . . . . . . 168
on the front passenger seat . . . . . . . . . 166
Safety instructions . . . . . . . . . . . . . . . . . 164
Use of child seats . . . . . . . . . . . . . . . . . 168
Children and safety . . . . . . . . . . . . . . . . . . . 164
Chrome parts . . . . . . . . . . . . . . . . . . . . . . . 198
Cigarette lighter . . . . . . . . . . . . . . . . . . . . . . 95
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Climatronic Air outlet vents . . . . . . . . . . . . . . . . . . . 114
Blower . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Defrosting windows . . . . . . . . . . . . . . . . 110
economic use . . . . . . . . . . . . . . . . . . . . 110
Keeping windows demisted . . . . . . . . . . 111
Operational problems . . . . . . . . . . . . . . 110
Recirculated air mode . . . . . . . . . . . . . . 112
Setting temperature . . . . . . . . . . . . . . . . 113
Climatronic (automatic air conditioning) . . . 109
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Clothes hooks . . . . . . . . . . . . . . . . . . . . . . . 103
Cockpit An overview . . . . . . . . . . . . . . . . . . . . . . . 11
Coming Home . . . . . . . . . . . . . . . . . . . . . . . . 60
Compartments . . . . . . . . . . . . . . . . . . . . . . . 97
Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Convenience operation . . . . . . . . . . . . . . . . . 52 Converting/masking over headlights . . . . . . 184
Cool box . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
replenishing . . . . . . . . . . . . . . . . . . . . . . 216
Warning light . . . . . . . . . . . . . . . . . . . . . . 31
Coolant level Warning light . . . . . . . . . . . . . . . . . . . . . . 31
Coolant temperature gauge . . . . . . . . . . . . . 14
Coolant temperature/coolant level Warning light . . . . . . . . . . . . . . . . . . . . . . 31
Cooling Climatronic . . . . . . . . . . . . . . . . . . . . . . . 109
The air conditioning system . . . . . . . . . . 104
Correct seated position . . . . . . . . . . . . . . . . 141
Counter for distance driven . . . . . . . . . . . . . . 16
Cruise control . . . . . . . . . . . . . . . . . . . . . . . 123
Cruise control system . . . . . . . . . . . . . . . . . 123
D
Deactivating an airbag . . . . . . . . . . . . . . . . 161
Defrosting rear window . . . . . . . . . . . . . . . . . 62
Defrosting windows The air conditioning system . . . . . . . . . . 106
De-icing windows . . . . . . . . . . . . . . . . . . . . 198
Detachable towing device . . . . . . . . . . . . . . 192
Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Diesel engines Starting engine . . . . . . . . . . . . . . . . . . . 119
Differential Lock (EDL) . . . . . . . . . . . . . . . . 177 Digital clock . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Dipstick . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Direction indicators . . . . . . . . . . . . . . . . . . . . 59
Warning light . . . . . . . . . . . . . . . . . . . . . . 29
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Distance driven . . . . . . . . . . . . . . . . . . . . . . . 21
distance driven . . . . . . . . . . . . . . . . . . . . . . . 16
Door Child safety locks . . . . . . . . . . . . . . . . . . . 41
Warning light . . . . . . . . . . . . . . . . . . . . . . 33
Drinks can holder at the front . . . . . . . . . . . . . . . . . . . . . . . . 92
at the rear . . . . . . . . . . . . . . . . . . . . . . . . . 92
Driving economically . . . . . . . . . . . . . . . . . . 185
Driving time . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Dynamo Warning light . . . . . . . . . . . . . . . . . . . . . . 36
E
EDL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Electric sliding/tilting roof . . . . . . . . . . . . . . . . 53
Electrically adjustable rear mirror . . . . . . . . . 67
Electrically adjustable seats . . . . . . . . . . . . . 71
Electronic Differential LockWarning light . . . . . . . . . . . . . . . . . . . . . . 34
Electronic Differential Lock (EDL) . . . . . . . . 177
Electronic immobiliser Warning light . . . . . . . . . . . . . . . . . . . . . . 35
Electronic stability programme (ESP) . . . . . 175 Warning light . . . . . . . . . . . . . . . . . . . . . . 34