Get Tips and Maintenance -> Checking and refilling levels Guide for Seat Leon 4 Door First Generation (1999-2006)

Checking and refilling levels190

Checking and refilling levels

Refuelling

The fuel tank cap opens automatically with the central

locking. The tank holds approximately 55 litres.

Unscrewing the tank cap

–Lift the lid.

– Unscrew the cap, turning it anti-clockwise.

Closing the tank cap

– Screw the tank cap to the right, until the point of feeling a “click”.

– Close the drawer. Make sure you hear it click into place. The tank

cap is secured with an anti-loss attachment.

The tank flap is at the rear of the vehicle on the right.

If the automatic filler nozzle is operated correctly, it will switch itself off as

soon as the tank is “full”. Never attempt to fill beyond this point, as this will

fill the expansion chamber. Fuel may leak out if ambient conditions are warm.

The correct fuel grade for your vehicle is given on a sticker on the inside of the

tank flap. Further notes on fuel can be found.

Releasing the fuel tank flap by hand

In case of a fault in the central locking system, the petrol tank cover may be

opened manually in the following way:

• Open the boot

• Open the flap in the right side trim in the luggage compartment

• Insert a hand and pull back on the locking mechanism

• Open the cover and remove the cap

WARNING

• Fuel is highly inflammable and can cause serious burns and other inju-

ries.

− Never smoke or use any naked flame when filling the fuel tank of the

vehicle, or a spare fuel canister, with fuel. This is an explosion hazard.

− Follow legal requirements for the use of spare fuel canisters.

− For safety reasons we do not recommend carrying a spare fuel

canister in the vehicle. The canister could be damaged in an accident

and leak.

• If, in exceptional circumstances, you have to carry a spare fuel canister,

please observe the following points:

Fig. 133 Tank flap open

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Safety First Handling instructions Tips and Maintenance Technical Data

− Never fill the spare fuel canister inside the vehicle or on it. An elec-

trostatic charge could build up during filling, causing the fuel fumes to

ignite. There is a danger of explosion. Always place the canister on the

ground to fill it.

− Insert the fuel nozzle into the mouth of the canister as far as

possible.

− If the spare fuel canister is made of metal, the filling nozzle must be

in contact with the canister during filling. This helps prevent an electro-

static charge building up.

− Never spill fuel in the vehicle or in the luggage compartment. Fuel

vapours are explosive. Danger of death.

Caution

• Fuel spills should be removed from the paintwork immediately.

• Never run the tank completely dry. An irregular fuel supply could cause

misfiring. As a result, unburnt fuel could enter the catalytic converter and

cause damage.

For the sake of the environment

Do not try to put in more fuel after the automatic filler nozzle has switched off;

this may cause the fuel to overflow if it becomes warm.

Petrol

Petrol types

The correct petrol types are listed on a sticker inside the fuel

tank flap.

Only unleaded petrol, corresponding to the standard DIN EN 228, may be

used for vehicles with catalytic converters (EN = “European Norm”).

Petrol types are categorised according to their octane number, e. g. 91, 95,

98 RON (RON = “research octane number”). You may use petrol with a higher

octane number than the one recommended for your engine. However, this

has no advantage in terms of fuel consumption and engine power.

Caution

• Even one tankful of leaded fuel would permanently impair the efficiency

of the catalytic converter.

• High engine speed and full throttle can damage the engine when using

petrol with an octane rating lower than the correct grade for the engine.

For the sake of the environment

Just one tankful of leaded fuel would seriously impair the efficiency of the

catalytic converter.

Petrol additives

Petrol additives improve the quality of the petrol.

The quality of the petrol influences running behaviour, performance and

service life of the engine. For this reason you should use good quality petrol

WARNING (continued)

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Checking and refilling levels192

containing additives. These additives will help to prevent corrosion, keep the

fuel system clean and prevent deposits from building up in the engine.

If good quality petrol with additives is not available or engine problems occur,

the required additives must be added during refuelling.

Diesel

Diesel*

Diesel fuel must correspond to DIN EN 590 (EN = “European standard”). It

must have a cetane number (CN) of at least 51. The cetane number indicates

the ignition quality of the diesel fuel.

Notes on filling with fuel ⇒ page 190.

RME fuel (Biodiesel)*

Only vehicles fitted with special equipment (PR 2G0 for

biodiesel use) can run using biodiesel according to the DIN

EN 14214 standard.

Diesel fuel must comply with the DIN EN 14,214 Standard (FAME).

• Biodiesel is a methylester obtained from rapeseed oil.

• DIN is a German abbreviation of “ D eutsches I nstitut für N ormug e.V.”,

the German Standardisation Institute.

• EN means E for European and N for Norm or Standard.

• FAME is an English abbreviation of “ Fatty Acid Methyl Ester”.

If the datasheet of your vehicle mentions the number PR 2G0 (optional equip-

ment) this means that the vehicle is prepared by the manufacturer for the use

of biodiesel.

Your Authorised Service Centre or automobile association will be able to

advise on where you can obtain RME biodiesel fuel.

The Authorised Service Centre may also be consulted to discover if the vehicle

is prepared for biodiesel use.

Things to note about RME fuel (biodiesel)

• The performance of a vehicle running on biodiesel may be lower than

normal.

• The fuel consumption of a vehicle operating with boidiesel may be

slightly higher.

• RME fuel is resistant to temperatures as low as -10°C approx.

• At outside temperatures below -10° C, we recommend using winter diesel

fuel.

Caution

• RME fuel (Biodiesel) can damage the fuel system in vehicles which are not

adapted.

• If you decide to use biodiesel in your vehicle, please use only RME fuel

which is DIN E 14,214 compliant.

• If you use biodiesel that does not meet the required standard, the fuel

filter could become clogged.

Note

• In case of low outside temperatures and with a percentage biodiesel

higher than 50%, during independent heating operation, the exhaust gas

flow may increase in the exhaust pipe.

• The fuel filter may be obstructed if a change is made from diesel to

biodiesel. For this reason, we recommend that, after about 300 or 400 Km,

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Checking and refilling levels 193

Safety First Handling instructions Tips and Maintenance Technical Data

following a fuel type change, change the fuel filter. Also note the instructions

in the Maintenance and Inspection Plan.

• If you plan to keep the vehicle parked for more than two weeks, we recom-

mend refuelling with biodiesel to a full tank and making a trip of about 50 Km

in order to avoid damage to the injection system.

Winter driving

Diesel can thicken in winter.

Winter-grade diesel

When using “summer-grade diesel fuel”, difficulties may be experienced at

temperatures below 0° because the fuel thickens due to wax separation. For

this reason, “winter-grade diesel fuel” is available in some countries during

the cold months. It can be used at temperatures as low as -22°C.

In countries with different climatic conditions the diesel fuel sold generally

has different temperature characteristics. Check with an Authorised Service

Centre or filling stations in the country concerned regarding the type of diesel

fuels available.

Filter pre-heater

Your vehicle is fitted with a filter fuel pre-heater, making it well equipped for

operation in winter. This ensures that the fuel system remains operational to

approx. -24°C, provided you use winter-grade diesel which is safe to -15°C.

However, if the fuel has waxed to such an extent that the engine will not start

at temperatures of under -24°C, simply place the vehicle in a warm room for

a while.

Caution

Do not mix fuel additives (“thinners”, or similar additives) with diesel fuel.

Working in the engine compartment

Safety instructions on working in the engine compartment

Any work carried out in the engine compartment or on the

engine must be carried out cautiously.

Before starting any work on the engine or in the engine compart-

ment:

1. Switch off the engine and remove the key from the ignition

2. Apply the handbrake

3. Move the gear stick to neutral or the selector lever to position P

4. Wait for the engine to cool down

5. Keep children away from the vehicle

6. Raise the bonnet ⇒ page 195

You should not do any work in the engine compartment unless you know

exactly how to carry out the jobs and have the correct tools! Have the work

carried out by a qualified workshop if you are uncertain.

All service fluids and consumables, e.g. coolant, engine oil, spark plugs and

batteries, are being constantly developed. SEAT provides a constant flow of

information to the Authorised Service Centres concerning modifications. For

this reason we recommend that you have service fluids and consumables

replaced by an Authorised Service Centre. Please observe the relevant

instructions ⇒ page 186. The engine compartment of any motor vehicle is a

hazardous area ⇒ .

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Checking and refilling levels194

WARNING

All work on the engine or in the engine compartment, e.g. checking and

refilling fluids, involves the danger of injury and scalding as well as the risk

of accident or fire.

• Never open the bonnet if you see steam, smoke or coolant escaping

from the engine compartment. Otherwise, there is a risk of sustaining

burns. Wait until no more steam or coolant is emitted, then allow the

engine to cool before carefully opening the bonnet.

• Switch off the engine and remove the key from the ignition.

• Apply the handbrake and move the gear stick to neutral or selector

lever to position P.

• Keep children away from the vehicle.

• Never touch hot engine parts. This is a risk of burns.

• Never spill liquids on a hot engine or on a hot exhaust gas system. This

is a fire hazard.

• Avoid causing short-circuits in the electrical system, particularly at the

points where the jump leads are attached ⇒ page 241. The battery could

explode.

• Never touch the radiator fan. It is temperature controlled and could

start automatically, even when the engine has been switched off and the

key removed from the ignition!

• Do not unscrew the cap on the expansion tank when the engine is hot.

If the coolant is hot, the cooling system will be pressurised!

• Protect face, hands and arms by covering the cap with a large, thick

cloth to protect against escaping coolant and steam.

• Always make sure you have not left any objects, such as cleaning cloths

and tools, in the engine compartment.

• If you have to work underneath the vehicle, you must use suitable

stands additionally to support the vehicle, thee is a risk of accident!. A

hydraulic jack is insufficient for securing the vehicle and there is a risk of

injury.

• If any work has to be performed when the engine is started or with the

engine running, there is an additional, potentially fatal, safety risk from the

rotating parts, such as the drive belts, alternator, radiator fan, etc., and

from the high-voltage ignition system. You should also observe the

following points:

− Never touch the electrical wiring of the ignition system.

− Ensure that jewellery, loose clothing and long hair do not get

trapped in rotating engine parts. Danger of death. Before starting any

work remove jewellery, tie back and cover hair, and wear tight-fitting

clothes.

− Always think carefully about pressing the accelerator if a gear is

engaged in either an automatic or manual gearbox. The vehicle could

move, even if the handbrake is applied. Danger of death.

• If work has to be carried out on the fuel system or on electrical compo-

nents, you must observe the following safety notes in addition to the above

warnings:

− Always disconnect the battery. The vehicle must be unlocked when

this is done, otherwise the alarm will be triggered.

− Do not smoke.

− Never work near naked flames.

− Always have a fire extinguisher on hand.

Caution

When changing or topping up service fluids, make absolutely certain that you

fill the fluids into the correct reservoirs. Failure to observe this point will result

in serious malfunctions and engine damage!

WARNING (continued)

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Checking and refilling levels 195

Safety First Handling instructions Tips and Maintenance Technical Data

For the sake of the environment

Service fluids leaks are harmful to the environment. For this reason you

should make regular checks on the ground underneath your vehicle. If you

find spots of oil or other fluids, have your vehicle inspected in a qualified

workshop.

Opening the bonnet

The bonnet is released from inside the vehicle.

Before opening the bonnet ensure that the windscreen wipers are in

rest position.

– To release the bonnet, pull the lever under the dashboard

⇒ fig. 134 in the direction indicated (arrow). The bonnet will be

released by a spring action ⇒ .

– Lift the bonnet using the release lever (arrow) and open the

bonnet.

– Release the bonnet stay and secure it in fixture designed for this

in the bonnet.

WARNING

Hot coolant can scald!

• Never open the bonnet if you see steam, smoke or coolant escaping

from the engine compartment.

Fig. 134 Detail of the

footwell: The release lever

for the bonnet is located

in the driver side footwell

Fig. 135 Arrester hook

for bonnet.

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Checking and refilling levels196

• Wait until no more steam, smoke or coolant is emitted from the bonnet,

then carefully open the bonnet.

• When working in the engine compartment, always observe the safety

warnings ⇒ page 193.

Closing the bonnet

– Raise the bonnet slightly.

– Release the bonnet stay and replace it in its support.

– At a height of about 30 cm let it fall so it is locked.

If the bonnet does not close, do not press downwards. Open it once more and

let it fall as before.

WARNING

If the bonnet is not closed properly, it could open while you are driving and

completely obscure your view of the road. Risk of accident.

• After closing the bonnet, always check that it is properly secured. The

bonnet must be flush with the surrounding body panels.

• If you notice that the bonnet latch is not secured when the vehicle is

moving, stop the vehicle immediately and close the bonnet properly. Risk

of accident.

Engine oil

Engine oil specifications

The engine used must conform with exact specifications.

Specifications

A special high-quality multigrade oil is put in the engine at the factory. This

can be used all the year round, except in exceptionally cold climates.

As the use of high quality oil is essential for the correct operation of the

engine and its long useful life, when topping up or replacement is necessary

use only those oils that conform to the requirements of the VW standards.

If it is not possible to find oil conforming to the VW standards then oil

conforming to the ACEA or API standards with an appropriate viscosity at

atmospheric temperature should be used instead. The use of this type of oil

may have some repercussions on the performance of the engine for example,

long starting time, increased consumption and a higher emission level.

If a top up is required then different oils may be mixed as long as they all

conform to the VW standards.

The specifications (VW standards) set out in the following page should

appear on the container of the service oil; the container will display together

the different standards for petrol and diesel engines, the oil can be used for

both types of engines.

WARNING (continued)

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Safety First Handling instructions Tips and Maintenance Technical Data

Oil properties

Viscosity

The viscosity class of the oil is selected according to the diagram.

When the ambient temperature falls outside the limits of the scale for a short

period, an oil change is not required.

Petrol engines

Diesel engines

Fig. 136 Types of oil

according to temperature

Denomination Specification Remarks

A - synthetic oils VW 502 00/ VW 500 00 Dated before 1-97

B - mineral oils VW 501 01 Dated before 1-97

A/B - multigrade oils ACEA B2 or B3 or even API SH/SJ Dated before 1-97

Denomination Specification Remarks

A - synthetic oils

VW 505 01

Diesel engines with a system of pump-injector type injection should use only oil with the specification VW 505 01. Avoid using any other type of oil for this type of engine other than

the VW 505 01 specification; This could lead to engine damage!

Dated before 1-97

B - mineral oils VW 505 00 Dated before 1-97

A/B - multigrade oils ACEA B2 or B3 or even API CD/CF Dated before 1-97

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Checking and refilling levels198

Mono-grade oil

Single grade oils are generally not suitable for all year round use, due to

ranges of viscosity

18)

These oils are only useful in a climate that is constantly very cold or very

warm.

Engine oil additives

No type of additive should be mixed with the engine oil. The deterioration

caused by these additives is not covered by the guarantee.

Note

Before a long trip, we recommend finding an engine oil that conforms to the

corresponding VW specifications and keeping it in the vehicle. This way, the

correct engine oil will always be available for a top-up if needed.

Checking the engine oil level

The engine oil dipstick indicates the level of the oil.

Before opening the bonnet, read and observe the warnings ⇒ in

“Safety instructions on working in the engine compartment” on

page 193.

– Park the vehicle on an even surface.

– After stopping the engine, wait a few minutes for the oil to drain

back into the sump.

–Raise the bonnet ⇒ page 195.

– Pull out the dipstick.

– Wipe the dipstick with a cloth and insert it again, pushing it in as

far as it will go.

18)

Viscosity: Ability to flow

Fig. 137 Engine oil

dipstick.

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Checking and refilling levels 199

Safety First Handling instructions Tips and Maintenance Technical Data

– Pull the dipstick out again and check the oil level ⇒ page 198,

fig. 137.

– Replace the dipstick, pushing it in as far as it will go.

The position of the dipstick is shown in the corresponding engine compart-

ment diagram ⇒ page 252.

If the level is in area ⇒ page 198, fig. 137 , you must not top up with oil.

If the oil level is in area , you may top up with oil (approx. 0,5 l).

If the oil level is in area , you must top up with oil (approx. 1,0 l).

It is normal for the engine to consume a certain amount of oil. Consumption

can be up to 1.0 litres per 1,000 km. For this reason the engine oil level must

be checked at regular intervals, preferably when filling the tank and before a

journey.

When the engine is working hard, for instance during sustained high-speed

motorway cruising in summer, when towing a trailer or climbing on mountain

passes, the oil level should preferably be kept within area and not above

this.

WARNING

Any work carried out in the engine compartment or on the engine must be

carried out cautiously.

• When working in the engine compartment, always observe the safety

warnings ⇒ page 193

Caution

If the oil level is above the area do not start the engine. This could result

in damage to the engine and catalytic converter. Contact an Authorised

Service Centre.

Topping up engine oil 

Top up gradually with small quantities of oil.

Before opening the bonnet, read and observe the warnings ⇒ in

“Safety instructions on working in the engine compartment” on

page 193.

– Unscrew cap from oil filler opening ⇒ fig. 138.

– Top-up oil in small amounts, using the correct oil.

– To avoid over-filling with engine oil, you should top-up using

small quantities, wait a while and check the oil level before

adding any more oil.

– As soon as the oil level is in area , carefully close the cap.

The position of the oil filler opening is shown in the corresponding engine

compartment diagram ⇒ page 252.

Fig. 138 In the engine

compartment: Engine oil

filler cap

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Checking and refilling levels200

Engine oil specification ⇒ page 196.

WARNING

Oil is highly inflammable! Ensure that no oil comes into contact with hot

engine components when topping up.

Caution

If the oil level is above the area do not start the engine. This could result

in damage to the engine and catalytic converter. Contact a qualified work-

shop.

For the sake of the environment

The oil level must never be above area . Otherwise oil can be drawn in

through the crankcase breather and escape into the atmosphere via the

exhaust system.

Changing engine oil

The engine oil must be changed at the intervals given in the

service schedule.

We recommend that you have the engine oil changed by an Authorised

Service Centre.

The two different oil change intervals are shown in the ⇒ Booklet “Service

schedule”.

WARNING

Only change the oil yourself if you have the specialist knowledge required!

• Before opening the bonnet, read and observe the warnings

⇒ page 193, “Safety instructions on working in the engine compartment”.

• Wait for the engine to cool down. Hot oil may cause burn injuries.

• Wear eye protection to avoid injuries caused by splashes of oil.

• When removing the oil drain plug with your fingers, keep your arm hori-

zontal to help prevent oil from running down your arm.

• Wash your skin thoroughly if it comes into contact with engine oil.

• Engine oil is poisonous! Used oil must be stored in a safe place out of

the reach of children until it is disposed of.

Caution

No additives should be used with engine oil. This could result in engine

damage. Any damage caused by the use of such additives would not be

covered by the factory warranty.

For the sake of the environment

• Because of the disposal problems, the necessary special tools and

specialist knowledge required, we recommend that you have the engine oil

and filter changed by an Authorised Service Centre.

• Never pour oil down drains or into the ground.

• Use a suitable container when draining the used oil. It has the be large

enough to hold all the engine oil.

WARNING (continued)

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Checking and refilling levels 201

Safety First Handling instructions Tips and Maintenance Technical Data

Coolant

Coolant specifications

Coolant is a mixture of water and at least 40% coolant addi-

tive.

The cooling system must be filled with a mixture of water and at least 40 % of

our coolant additive G 12+ or an additive with the specification TT-VW 774 F

(it is dyed purple). This mixture gives the necessary frost protection down to

-25°C and protects the alloy parts of the cooling system against corrosion. It

also prevents scaling and raises the boiling point of the coolant.

The concentration of coolant must always be at least 40% - even if frost

protection is not required.

If greater frost protection is required in very cold climates, the proportion of

the antifreeze additive G 12+ can be increased. However, the percentage of

coolant additives should not exceed 60%, as this would reduce the frost

protection. It would also reduce the cooling effect. A mixture with 60%

coolant additive will give frost protection to approx. -40°C.

WARNING

• The coolant additive is toxic. This represents a toxic danger. Always

keep the coolant additive in the original container which should be stored

out of the reach of children. The same applies to coolant which you have

drained off.

• The coolant additive G 12+ must be added in sufficient quantities to

provide anti-freeze protection at the coldest ambient temperatures that

can be expected. At extremely cold ambient temperatures, the coolant

could freeze, causing the vehicle to breakdown. As the heater would also

not work in this situation, there is a risk of suffering exposure!

Caution

• Other additives may give considerably inferior corrosion protection. The

resulting corrosion in the cooling system can lead to a loss of coolant,

causing serious damage to the engine.

• The coolant additive G 12+ (purple) can be mixed with the additive G 12

(red) or G 11. Never mix G12 (red colour) with G 11.

Checking the coolant level and topping up 

The correct coolant level is important for fault-free func-

tioning of the engine cooling system.

Before opening the bonnet, read and observe the warnings ⇒ in

“Safety instructions on working in the engine compartment” on

page 193.

Fig. 139 In the engine

compartment: Coolant

expansion tank cap

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Checking and refilling levels202

Opening the coolant expansion tank

– Switch off the engine and allow it to cool.

– To prevent scalding, cover the cap on the expansion tank with a

thick cloth and carefully unscrew the cap ⇒ .

Checking coolant level

– Look into the open coolant expansion tank and read off the

coolant level.

– If the level is underneath the “MIN” mark, top up with coolant.

Topping up coolant

–Only use new coolant.

– Do not fill above the “MAX” mark.

Closing the coolant expansion tank

– Screw the cap on again tightly.

The position of the coolant expansion tank is shown in the corresponding

engine compartment diagram ⇒ page 252.

Make sure that the coolant meets the required specifications ⇒ page 201.

Do not use a different type of additive if coolant additive G 12+ is not avail-

able. 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

⇒ page 201.

Always top up with new coolant.

Do not fill above the “MAX” mark. Otherwise the excess coolant will be forced

out of the cooling system when the engine is hot.

The coolant additive G 12+ (dyed purple) may be mixed with G 12 (dyed red)

and also with G 11.

WARNING

Any work carried out in the engine compartment or on the engine must be

carried out cautiously.

• When working in the engine compartment, always observe the safety

warnings ⇒ page 193.

• When the engine is warm or hot, the cooling system is pressurised! Do

not unscrew the cap on the expansion tank when the engine is hot. This is

a burn injury risk.

Caution

• When mixed with other additives the colour of G 12 will change to brown.

If this occurs you should have the coolant changed immediately. Failure to do

so will result in engine damage!

• If a lot of coolant has been lost, wait for the engine to cool down before

putting in cold coolant. This avoids damaging the engine. Large coolant

losses are an indication of leaks in the cooling system. See a specialised

workshop immediately and have the cooling system checked. Otherwise,

there is a risk of engine damage.

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Checking and refilling levels 203

Safety First Handling instructions Tips and Maintenance Technical Data

Washer fluid and windscreen wiper blades

Topping up washer fluid 

The water for cleaning the windscreen should always be

mixed with washer fluid.

The windscreen washer and the headlight washing system are supplied with

fluid from the windscreen washer fluid container in the engine compartment.

The reservoir is located on the right-hand side of the engine compartment.

Plain water is not enough to clean the windscreen and headlights. We recom-

mend that you always add a product to the windscreen washer fluid.

Approved windscreen cleaning products exist on the market with high deter-

gent and anti-freeze properties, these may be added all-year-round. Please

follow the dilution instructions on the packaging.

WARNING

Any work carried out in the engine compartment or on the engine must be

carried out cautiously.

• When working in the engine compartment, always observe the safety

warnings ⇒ page 193.

Caution

• Never put radiator anti-freeze or other additives into the windscreen

washer fluid.

• Always use approved windscreen cleansing products diluted as per

instructions. If you use other washer fluids or soap solutions, the tiny aper-

tures in the fan-shaped nozzles could become blocked.

Fig. 140 In the engine

compartment: Cap of

windscreen washer fluid

reservoir

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Checking and refilling levels204

Changing the front windscreen wiper blades

If the windscreen wiper blades are in perfect condition, you

will benefit from an improved visibility. Damaged wiper

blades should be replaced immediately.

The change of blades can be made in the rest position or in the hori-

zontal position. Ensure that the wiper blades are not frozen.

Changing the windscreen wiper blades

– Lift the wiper arm away from the windscreen.

– Press on the lateral buttons and release the blade by moving

it in the direction of the arrow ⇒ fig. 141.

Fitting the wiper blade

– Insert the tab into the allotment of the blade ⇒ fig. 141.

– Move the blade towards the arm in the opposite direction of the

arrow , until it clicks into place ⇒ fig. 141.

– Push the wiper arms back against the windscreen.

If the windscreen wipers rub, they should be replaced if they are damaged,

or cleaned if they are soiled.

If this does not produce the desired results, the setting angle of the wind-

screen wiper arms might be incorrect. They should be checked by a qualified

workshop and corrected if necessary.

WARNING

Do not drive unless you have good visibility through all windows!

• Clean the windscreen wiper blades and all windows regularly.

• The wiper blades should be changed once or twice a year.

Caution

• Damaged or dirty windscreen wipers could scratch the windscreen.

• Never use fuel, nail varnish remover, paint thinner or similar products to

clean the windows. This could damage the windscreen wiper blades.

• Never move the windscreen wiper or windscreen wiper arm manually. This

could cause damage.

• Do not pull the windscreen wipers forward unless they are in the service

position. Otherwise the bonnet could be damaged.

Note

• The wiper arms can be moved to the service position only when the

bonnet is properly closed.

Fig. 141 Changing the

front wiper blades

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Safety First Handling instructions Tips and Maintenance Technical Data

Changing the rear wiper blade

A good rear wiper blade is essential for clear rear vision.

Damaged wiper blades should be replaced immediately.

Removing the wiper blade

– Lift the wiper arm away from the glass ⇒ fig. 142.

– Unclip the wiper blade and pull ⇒ fig. 142.

Fitting the wiper blade

– With one hand, hold the top end of the wiper arm.

– With the other hand, press the wiper blade into the retainer.

Check the condition of the wiper blade regularly. Change as required.

If the windscreen wiper rubs, it should be replaced if it is damaged, or

cleaned if it is soiled.

If this is not sufficient, refer to a qualified workshop.

WARNING

Do not drive unless you have good visibility through all windows!

• Clean the windscreen wiper blades and all windows regularly.

• The wiper blades should be changed once or twice a year.

Caution

• A damaged or dirty window wiper could scratch the rear window.

• Never use fuel, nail varnish remover, paint thinner or similar products to

clean the window.

• Never move the windscreen wiper by hand. This could cause damage.

Fig. 142 Changing the

rear window wiper blade

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Checking and refilling levels206

Brake fluid

Checking the brake fluid level

The brake fluid is checked at the intervals given in the service

schedule.

– Read off the fluid level at the transparent brake fluid reservoir. It

should always be between the “MIN” and “MAX” marks.

The position of the coolant expansion tank is shown in the corresponding

engine compartment diagram ⇒ page 252. The brake fluid reservoir has a

black and yellow cap.

The brake fluid level drops slightly when the vehicle is being used as the

brake pads are automatically adjusted as they wear.

However, if the level goes down noticeably in a short time, or drops below the

“MIN” mark, there may be a leak in the brake system. A display on the instru-

ment panel will warn you if the brake fluid level is too low ⇒ page 71.

WARNING

Before opening the bonnet to check the brake fluid level, read and observe

the warnings ⇒ page 193.

Changing the brake fluid

The brake fluid must be renewed every two years.

We recommend that you have the brake fluid changed by an Authorised

Service Centre.

Before opening the bonnet, please read and follow the warnings ⇒ in

“Safety instructions on working in the engine compartment” on page 193 in

“Working in the engine compartment”.

Brake fluid absorbs moisture. In the course of time, it will absorb water from

the ambient air. If the water content in the brake fluid is too high, the brake

system could corrode. This also considerably reduces the boiling point of the

brake fluid. Heavy use of the brakes may then cause a vapour lock which

could impair the braking effect.

For this reason the brake fluid must be renewed every two years.

It important that you use only use brake fluid compliant with the US standard

FMVSS 116 DOT 4. We recommend the use of Genuine SEAT brake fluid.

WARNING

Brake fluid is poisonous. Old brake fluid impairs the braking effect.

Fig. 143 In the engine

compartment: Brake fluid

reservoir cover

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Checking and refilling levels 207

Safety First Handling instructions Tips and Maintenance Technical Data

• Before opening the bonnet to check the brake fluid level, read and

observe the warnings ⇒ page 193.

• Brake fluid should be stored in the closed original container in a safe

place out of reach of children. This represents a toxic danger.

• Have the brake fluid changed every two years at the latest. Heavy use

of the brakes may cause a vapour lock if the brake fluid is left in the system

for too long. This would seriously affect the efficiency of the brakes and the

safety of the vehicle. This may be an accident risk.

Caution

Brake fluid could damage the paintwork. Wipe off any brake fluid from the

paintwork immediately.

For the sake of the environment

Brake fluid must be drained and disposed of in the proper manner observing

environmental regulations.

Battery

Warnings on handling the battery

WARNING

Always be aware of the danger of injury and chemical burns as well as the

risk of accident or fire when working on the battery and the electrical

system:

• Wear eye protection. Protect your eyes, skin and clothing from acid and

particles containing lead.

• Battery acid is very corrosive and caustic. Wear protective gloves and

eye protection. Do not tilt the batteries. This could spill acid through the

vents. Rinse battery acid from eyes immediately for several minutes with

clear water. Then seek medical care immediately. Neutralize any acid

splashes on the skin or clothing with a soapy solution, and rinse off with

plenty of water. If acid is swallowed by mistake, consult a doctor immedi-

ately.

• Fires, sparks, naked lights and smoking are prohibited. When handling

cables and electrical equipment, avoid causing sparks and electrostatic

WARNING (continued)



Wear eye protection



Battery acid is very corrosive and caustic. Wear protec-

tive gloves and eye protection!



Fires, sparks, naked lights and smoking are prohibited!



A highly explosive mixture of gases is given off when the

battery is under charge



Keep children away from acid and batteries!

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Checking and refilling levels208

charge. Never short the battery terminals. High-energy sparks can cause

injury.

• A highly explosive mixture of gases is given off when the battery is

under charge. The batteries should be charged in a well-ventilated room

only.

• Keep children away from acid and batteries.

• Before working on the electrical system, you must switch off the

engine, the ignition and all consumers. The minus cable on the battery

must be disconnected. When a light bulb is changed, you need only switch

off the light.

• Deactivate the anti-theft alarm by unlocking the vehicle before you

disconnect the battery! The alarm will otherwise be triggered.

• When disconnecting the battery from the vehicle electrical system,

disconnect first the negative cable and then the positive cable.

• Switch off all electrical consumers before reconnecting the battery.

Reconnect first the positive cable and then the negative cable. Never

reverse the polarity of the connections. This could cause an electrical fire.

• Never charge a frozen battery, or one which has thawed. This could

result in explosions and chemical burns. Always replace a battery which

has frozen. A flat battery can freeze at temperatures around 0°C.

• Ensure that the vent hose is always connected to the battery.

• Never use a defective battery. There is a danger of explosion. Replace a

damaged battery immediately.

Caution

• Never disconnect the battery if the ignition is switched on or if the engine

is running. This could damage the electrical system or electronic compo-

nents.

• Do not expose the battery to direct sunlight over a long period of time, as

the intense ultraviolet radiation can damage the battery housing.

• If the vehicle is left standing in cold conditions for a long period, protect

the battery from frost. If it “freezes” it will be damaged.

Checking the electrolyte level

The electrolyte level should be checked regularly in high-

mileage vehicles, in hot countries and in older batteries.

– Open the bonnet and open the battery cover at the front ⇒ in

“Safety instructions on working in the engine compartment” on

page 193 ⇒ in “Warnings on handling the battery” on

page 207.

– Check the colour display in the magic eye on the top of the

battery.

– If there are air bubbles in the window, tap the window gently until

they disappear.

The position of the battery is shown in the corresponding engine compart-

ment diagram ⇒ page 252.

The spy hole indicator (“magic eye”) on the top of the battery changes colour,

depending on the charge level and electrolyte level of the battery.

If the colour in the window is colourless or bright yellow, the electrolyte level

of the battery is too low. Have the battery checked by a qualified workshop.

The colours green and black are used by the workshops for diagnostic

purposes.

WARNING (continued)

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Checking and refilling levels 209

Safety First Handling instructions Tips and Maintenance Technical Data

Charging and changing the vehicle battery

The battery is maintenance-free and is checked during the

inspection service. All work on the vehicle battery requires

specialist knowledge.

If you often drive short distances or if the vehicle is not driven for long

periods, the battery should be checked by a qualified workshop between the

scheduled services.

If the battery has discharged and you have problems starting the vehicle, the

battery might be damaged. If this happens, we recommend you have the

vehicle battery checked by an Authorised Service Centre where it will be re-

charged or replaced.

Charging the battery

The vehicle battery should be charged by a qualified workshop only, as

batteries using special technology have been installed and they must be

charged in a controlled environment.

Replacing a vehicle battery

The battery has been developed to suit the conditions of their location and

has special safety features.

Genuine SEAT batteries fulfil the maintenance, performance and safety spec-

ifications of your vehicle.

WARNING

• We recommend you use only maintenance-free or cycle free leak-proof

batteries which comply with the standards T 825 06 and VW 7 50 73. This

standard applies as of 2001.

• Before starting any work on the batteries, you must read and observe

the warnings ⇒ in “Warnings on handling the battery” on page 207.

For the sake of the environment

Batteries contain toxic substances such as sulphuric acid and lead. They

must be disposed of appropriately and must not be disposed of with ordinary

household waste.

Wheels

General notes

Avoiding damage

– If you have to drive over a kerb or similar obstacle, drive very

slowly and as near as possible at a right angle to the kerb.

– Keep grease, oil and fuel off the tyres.

– Inspect the tyres regularly for damage (cuts, cracks or blisters,

etc.). Remove any foreign objects embedded in the treads.

Storing tyres

– Mark tyres when you remove them to indicate the direction of

rotation. This ensures you will be able to install them correctly

when you replace them.

– When removed, the wheels and/or tyres should be stored in a

cool, dry and preferably dark location.

– Store tyres in a vertical position if they are not fitted on wheel

rims.

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Checking and refilling levels210

New tyres

New tyres have to be run in ⇒ page 169.

The tread depth of new tyres may vary, according to the type and make of tyre

and the tread pattern.

Concealed damage

Damage to tyres and rims is often not readily visible. If you notice unusual

vibrations or the car pulling to one side, this may indicate that one of the tyres

is damaged. The tyres should be checked immediately by an Authorised

Service Centre.

Tyres with directional tread pattern

An arrow on the tyre sidewall indicates the direction of rotation on tyres with

directional tread. Always observe the direction of rotation indicated when

fitting the wheel. This guarantees optimum grip and helps to avoid aqua-

planing, excessive noise and wear.

WARNING

• New tyres do not have maximum grip in the first 500 km. Drive particu-

larly carefully to avoid risk of accident.

• Never drive with damaged tyres. This may be an accident risk.

• If you notice unusual vibration or if the vehicle pulls to one side when

driving, stop the vehicle immediately and check the tyres for damage.

Checking tyre pressure

The correct tyre pressure can be seen on the sticker on the

inside of the tank flap.

1. Read the required tyre inflation pressure from the sticker. The

values refer to Summer tyres. For Winter tyres, you must add 0.2

bar to the values given on the sticker

2. The tyre pressures should only be checked when the tyres are

cold. The slightly raised pressures of warm tyres must not be

reduced

3. Adjust the tyre pressure to the load you are carrying

Tyre pressure

The correct tyre pressure is especially important at high speeds. The pressure

should therefore be checked at least once a month and before starting a

journey.

WARNING

A tyre can easily burst if the pressure is too low, causing an accident!

• At continuously high speeds, a tyre with insufficient pressure flexes

more. In this way it becomes too hot, and this can cause tread separation

and tyre blow-out. Always observe the recommended tyre pressures.

• If the tyre pressure is too low or too high, the tyres will wear prema-

turely and the vehicle will not handle well. Risk of accident!

For the sake of the environment

Under-inflated tyres will increase fuel consumption.

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Checking and refilling levels 211

Safety First Handling instructions Tips and Maintenance Technical Data

Tyre service life

The service life of tyres is dependent on tyre pressure, driving

style and fitting.

Wear indicators

The original tyres on your vehicle have 1.6 mm high “tread wear

indicators”⇒ fig. 144 running across the tread. Depending on the make,

there will be six to eight of them evenly spaced around the tyre. Markings on

the tyre sidewall (for instance the letters “TWI” or other symbols) indicate the

positions of the tread wear indicators. The minimum tread depth required by

law is 1.6 mm (measured in the tread grooves next to the tread wear indica-

tors). Worn tyres must be replaced. Different figures may apply in export

countries ⇒ .

Tyre pressure

Incorrect tyre pressure causes premature wear and could cause tyre blow-out.

For this reason, the tyre pressure should be checked at least once per month

⇒ page 210.

Driving style

Fast cornering, heavy acceleration and hard braking all increase tyre wear.

Changing wheels around

If the front tyres are worn considerably more than the rear ones it is advisable

to change them around as shown ⇒ fig. 145. All the tyres will then last for

about the same time.

Wheel balance

The wheels on new vehicles are balanced. However, various factors encoun-

tered in normal driving can cause them to become unbalanced, which results

in steering vibration.

Unbalanced wheels should be rebalanced, as they otherwise cause excessive

wear on steering, suspension and tyres. A wheel must also be rebalanced

when a new tyre is fitted.

Incorrect wheel alignment

Incorrect wheel alignment causes excessive tyre wear, impairing the safety of

the vehicle. If tyres show excessive wear, you should have the wheel align-

ment checked by an Authorised Service Centre.

Fig. 144 Tyre tread wear

indicators

Fig. 145 Changing

wheels

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Checking and refilling levels212

WARNING

There is a serious danger of accidents if a tyre bursts during driving!

• The tyres must be replaced at the latest when the tread is worn down to

the tread wear indicators. Failure to do so could result in an accident. Worn

tyres do not grip well at high speeds on wet roads. There is also a greater

risk of “aquaplaning”.

• At continuously high speeds, a tyre with insufficient pressure flexes

more. This causes it to overheat. This can cause tread separation and tyre

blow-out. Risk of accident. Always observe the recommended tyre pres-

sures.

• If tyres show excessive wear, you should have the running gear checked

by an Authorised Service Centre.

• Keep chemicals such as oil, fuel and brake fluid away from tyres.

• Damaged wheels and tyres must be replaced immediately!

For the sake of the environment

Under-inflated tyres will increase fuel consumption.

New tyres and wheels

New tyres and wheels have to be run-in.

The tyres and wheel rims are an essential part of the vehicles design. The

tyres and rims approved by SEAT are specially matched to the characteristics

of the vehicle and make a major contribution to good road holding and safe

handling ⇒ .

Tyres should be replaced at least in pairs and not individually (i.e. both front

tyres or both rear tyres together). A knowledge of tyre designations makes it

easier to choose the correct tyres. Radial tyres have the tyre designations

marked on the sidewall, for example:

195/65 R15 91T

This contains the following information:

195 Tyre width in mm

65 Height/width ratio in %

R Tyre construction: Radial

15 Rim diameter in inches

91 Load rating code

T Speed rating

The tyres could also have the following information:

• A direction of rotation symbol

• “Reinforced” denotes heavy-duty tyres

The manufacturing date is also indicated on the tyre sidewall (possibly only

on the inner side of the wheel).

“DOT ... 1103 ...” means, for example, that the tyre was produced in the 11th

week of 2003.

We recommend that work on tyres and wheels is carried out by an Authorised

Service Centre. They are familiar with the procedure and have the necessary

special tools and spare parts as well as the proper facilities for disposing of

the old tyres.

Any Authorised Service Centre has full information on the technical require-

ments when installing or changing tyres, wheels or wheel trims.

WARNING

• We recommend that you use only use wheels and tyres which have been

approved by SEAT for your model. Failure to do so could impair vehicle

handling. Risk of accident.

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Checking and refilling levels 213

Safety First Handling instructions Tips and Maintenance Technical Data

• Avoid running the vehicle on tyres that are more than six years old. If

you have no alternative, you should drive slowly and with extra care at all

times.

• Never use old tyres or those with an unknown “history of use”.

• If wheel trims are retrofitted, you must ensure that the flow of air to the

brakes is not restricted. This could cause them to overheat.

• All four wheels must be fitted with radial tyres of the same type, size

(rolling circumference) and the same tread pattern.

For the sake of the environment

Old tyres must be disposed of according to the laws in the country concerned.

Note

• For technical reasons, it is not generally possible to use the wheels from

other vehicles. This can also apply to wheels of the same model. The use of

wheels or tyres which have not been approved by SEAT for use with your

model may invalidate the vehicle's type approval for use on public roads.

• If the spare tyre is not the same as the tyres that are mounted on the

vehicle - for example with winter tyres - you should only use the spare tyre for

a short period of time and drive with extra care. Refit the normal road wheel

as soon as possible.

Wheel bolts

Wheel bolts must be tightened to the correct torque.

The design of wheel bolts is matched to the rims. If different wheel rims are

fitted, the correct wheel bolts with the right length and correctly shaped bolt

heads must be used. This ensures that wheels are fitted securely and that the

brake system functions correctly.

In certain circumstances, you may not use wheel bolts from a different car -

even if it is the same model ⇒ page 186.

WARNING

If the wheel bolts are not tightened correctly, the wheel could become

loose while driving. Risk of accident.

• The wheel bolts must be clean and turn easily. Never apply grease or oil

to them.

• Use only wheel bolts which belong to the wheel.

• If the prescribed torque of the wheel bolts is too low, they could loosen

whilst the vehicle is in motion. Risk of accident! If the tightening torque is

too high, the wheel bolts and threads could be damaged.

Caution

The prescribed torque for wheel bolts for steel and alloy wheels is 120 Nm.

Winter tyres

Winter tyres will improve the vehicles handling on snow and

ice.

In winter conditions winter tyres will considerably improve the vehicles

handling. The design of summer tyres (width, rubber compound, tread

pattern) gives less grip on ice and snow.

Winter tyres must be inflated to a pressure 0.2 bar higher than the pressures

specified for summer tyres (see sticker on tank flap).

Winter tyres must be fitted on all four wheels.

WARNING (continued)

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Checking and refilling levels214

Information on approved winter tyre sizes can be found in the vehicle's regis-

tration documents. Use only radial winter tyres. All tyre sizes listed in the

vehicle documentation also apply to winter tyres.

Winter tyres lose their effectiveness when the tread is worn down to a depth

of 4 mm.

The speed rating code ⇒ page 212, “New tyres and wheels” determines the

following speed limits ⇒ .

Q max. 160 km/h

S max. 180 km/h

T max. 190 km/h

H max. 210 km/h

In some countries, vehicles which can exceed the speed rating of the fitted

tyre must have an appropriate sticker in the driver's field of view. These

stickers are available from your Authorised Service Centre. The legal require-

ments of each country must be followed.

Do not have winter tyres fitted for unnecessarily long periods. Vehicles with

summer tyres handle better when the roads are free of snow and ice.

If you have a flat tyre, please refer to the notes on the spare wheel

⇒ page 212, “New tyres and wheels”.

WARNING

The maximum speed for the winter tyres must not be exceeded. Otherwise,

this could lead to tyre damage and thus, an accident risk.

For the sake of the environment

Fit your summer tyres in good time. They are quieter, do not wear so quickly

and reduce fuel consumption.

Snow chains

Snow chains may be fitted only to the front wheels, and only to certain tyre

sizes ⇒ page 250.

Snow chains must have fine-pitch links which do not protrude more that 9

mm, including tensioner.

Remove wheel hub covers and trim rings before fitting snow chains. For safety

reasons cover caps, available in any Authorised Service Centre, must then be

fitted over the wheel bolts.

WARNING

Observe the fitting instructions provided by the snow chain manufacturer.

Caution

You must remove the snow chains to drive on roads which are free of snow.

Otherwise they will impair handling, damage the tyres and wear out very

quickly.

Note

In some countries, the speed limit for using snow chains is 50 km/h. The legal

requirements of the country should be followed.

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Tips and Maintenance -> Checking and refilling levels for Your Seat Leon 4 Door First Generation (1999-2006)

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