overheating SKODA SUPERB 2003 1.G / (B5/3U) Owner's Manual

Instruments and Indicator/Warning Lights
14
Engine revolutions counter
The start of the red zone in the revolutions counter ⇒page 13, fig. 3
indicates the maximum permissible engine speed for all gears for an
engine which has been run in and operating at a normal temperature. You
should shift into the next higher gear before this red zone is reached, or
move the selector lever into position D if your car is fitted with an automatic
gearbox.
One should shift to the next lower gear at the latest when the engine is no
longer running smoothly.
Avoid high engine speeds during the running-in period ⇒page 176
Caution
The needle of the revolutions counter must on no account move into the
red zone of the scale: Risk of damage to the engine!
For the sake of the environment
Shifting up early helps you save fuel and reduce the operating noise of
your vehicle.
Coolant temperature gauge
The coolant temperature gauge ⇒page 13, fig. 3 only operates when
the ignition is switched on.
In order to avoid any damage to the engine, please pay attention to the
following notes regarding the temperature ranges: Cold range
If the pointer is still in the left-hand area of the scale it means that the
engine has not yet reached its operating temperature. Avoid running at
high engine speeds, at full throttle and at severe engine loads.
The operating range
The engine has reached its operating temperature as soon as the pointer
moves into the mid-range of the scale. The pointer may also move further
to the right at high engine loads and high outside temperatures. This is not
critical provided the warning symbol
 in the instrument cluster does not
flash.
If the symbol
 in the instrument cluster flashes it means that either the
coolant temperature is too high or the coolant level is too low. Please
refer to the guidelines ⇒page 31, “Coolant temperature/coolant level ”.
Caution
Additional headlights and other attached components in front of the fresh
air inlet impair the cooling efficiency of the coolant. There is then a risk of
the engine overheating at high outside temperatures and high engine
loads!
A1
A2
WARNING
Pay attention to the warning notes ⇒page 203, “Working in the
engine compartment” before opening the bonnet and inspecting
the coolant level.

Starting-off and Driving119
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Applying the handbrake
– Pull the handbrake lever up fully.
Releasing the handbrake
– Pull the handbrake lever up slightly and at the same time
press in the locking button ⇒page 118, fig. 109 .
– Hold the button pressed and push the handbrake lever down fully ⇒ .
The handbrake warning light  lights up when the handbrake is applied,
provided the ignition is on.
A warning signal (buzzer) sounds and the following text appears in the
display* if you have inadvertently driven off with the handbrake applied:
"Handbrake on"
The handbrake warning is activated if you drive at a speed of more than 5
km/h for more than 3 seconds.
Caution
After the car has come to a stop, always first of all apply the handbrake
firmly before then additionally engaging a gear (manual gearbox) or
moving the selector lever into position P (automatic gearbox).
Parking aid*
The parking aid provides a warning of obstacles behind
the vehicle.
The audible parking aid at the rear determines the distance to an obstacle
behind the car with the aid of ultrasound sensors. The sensors are inte-
grated in the rear bumper.
The parking aid is activated automatically when reverse gear is engaged
and the ignition is turned on. This is confirmed by a brief signal.
The clearance warning begins at a distance of about 160 cm from the
obstacle. The interval between the warning signals becomes shorter as
the clearance is reduced.
A continuous tone sounds from a clearance of just 30 cm - danger area.
You should not reverse any further after this signal sounds.
WARNING
•Please note that the handbrake must be fully released. A hand-
brake which is only partially released can result in the rear brakes
overheating which will have a negative effect on the operation of
the brake system - risk of accident!
•Never leave children unattended in the vehicle. The children
might, for example, release the ha ndbrake or take the vehicle out
of gear. The vehicle might then move off - risk of accident!WARNING
•The parking aid is not a substitute for the driver paying proper
attention. It is always the driver's responsibility to take care when
parking the vehicle or carrying out similar manoeuvres.

Intelligent Technology171
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mitted to the road surface is automatically adapted by reducing the engine
speed. This occurs at all speeds.
The TCS operates in combination with the ABS
⇒page 173. The TCS will
not function if a fault exists in the ABS system.
The TCS warning light ⇒page 34 lights up in the instrument cluster when
there is a fault on the TCS.
Switching off
You can switch the TCS off and on again as you wish by pressing the
button ⇒page 170, fig. 146 . The TCS warning light ⇒page 28 lights up
in the instrument cluster when the TCS is switched off.
The TCS should normally always be switched on. It may be good practice
to switch the system off only in particular exceptional situations if you
desire wheel slip.
Examples:
•when driving with snow chains
•when driving in deep snow or on a loose surface
•when it is necessary to rock a car free when it has become stuck
then you should switch on the TCS again.
The EDL ⇒page 171 is a part of the TCS. THE EDL operates independ-
ently of the TCS (also when the TCS has been switched off using the TCS
button).
Note
•All four wheels must be fitted with the same tyres in order to achieve
problem-free operation of the TCS. Differing rolling circumferences of the
tyres can lead to an undesirable reduction in the engine output.
•Changes to vehicle (e.g. on engine, on the brakes, on chassis or other
assignment of tyres and wheels) can influence the function of the TCS
⇒ page 226.
Electronic Differential Lock (EDL)*
The electronic differential lock prevents an individual
wheel from slipping.
General
The EDL makes it much easier, and sometimes at all possible, to start off,
accelerate and climb a steep hill when the conditions of the road surface
are unfavourable.
Operating principle
The EDL is activated automatically, that is without any action on the part
of the driver. It monitors the speeds of the driven wheels with the aid of the
ABS sensors. Should only one drive wheel begin spinning on a slippery
surface there will be an appreciable difference in the speed of the driven
wheels. The EDL function brakes the slipping wheel and the differential
transmits a greater driving force to the other driven wheel. This control
process is also accompanied by noises.
Overheating of the brakes
The EDL switches off automatically if unusually severe stresses exist in
order to avoid excessive heat generation in the disc brake on the wheel
which is being braked. The vehicle can continue to be driven and has the
same characteristics as a vehicle not fitted with EDL.
WARNING
You should always adjust your style of driving to the conditions of
the road surface and the traffic situation. The increased safety
offered must not tempt you to take greater risks than otherwise -
risk of an accident!

Towing a trailer
186
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 downhill stretch 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 208.
Please refer to the following guidelines ⇒page 31.
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
Note
•Do not carry out any modifications or repairs to the ball head or to any
other components on the towing device.
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
extent that the safety of the towing device is no longer assured -
risk of an accident.
Fig. 150 Detachable
ball head

Fuel201
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•Vehicles fitted with catalytic converter should never be allowed to let
the fuel tank to run completely empty. An irregular supply of fuel to the
engine can result in misfiring and unburnt fuel may get into the exhaust
system, which may result in overheating and damage to the catalytic
converter.
For the sake of the environment
The fuel tank is full just as soon as the pump nozzle switches off for the
first time, provided the nozzle has been operated properly. You should not
continue refuelling - otherwise the expansion chamber in the fuel tank will
also be filled with fuel. Fuel might flow out of the tank when it heats up.
Emergency release of fuel filler flap
If the electric lock is faulty, you can also unlock the fuel filler flap
manually. – Open the boot lid/luggage compartment door.
– Unscrew the clip attaching the right-hand side trim panel and
pull the trim panel off the body.
– Pull on the loop in direction of arrow in order to unlock the fuel filler flap ⇒fig. 152 .
Fig. 152 Luggage
compartment: Emer-
gency release of fuel
filler flap
WARNING
Reel up the belt webbing once again until it is fitted snugly against
the child seat.

Inspecting and Replenishing209
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– Open the bonnet ⇒ in “Working in the engine compart-
ment” on page 203.
– Check the level of coolant in the coolant expansion bottle ⇒fig. 157. 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.
One should contact a Skoda 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.
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 208, fig. 157 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
certain specifications ⇒page 208, “Coolant”. Do not use an alternative
additive if the coolant additive G12°PLUS is not available in exceptional
cases. Just top up the system with water and as soon as possible arrange
adjustment to correct the mixing ratio of water and coolant additive 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 engine is still hot - risk of
scalding!