engine Seat Altea XL 2012 Manual Online

238Checking and refilling levels
CAUTION
● Other additives may give considerably inferior corrosion protection. The
resulting corrosion in the cooling system can lead to a loss of coolant, caus-
ing serious damage to the engine.
● The coolant additive G12+ (purple) can be mixed with the additive G12
(red) or G11. Never mix G12 (red colour) with G11. 
Checking the coolant level and topping up 
The correct coolant level is important for fault-free function-
ing of the engine cooling system.
Fig. 169 In the engine
compartment: Coolant
expansion tank cap
Before opening the bonnet, read and observe the warnings ⇒ 
in
Safety instructions on working in the engine compartment on
page 230. 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 below the “MIN” mark, top up with coolant.
Topping up coolant
– Only use new coolant liquid.
– Do not fill above the “MAX” mark.
Closing the coolant expansion tank
– Screw the cap on again tightly.
The position of the coolant expansion reservoir is shown in the correspond-
ing engine compartment illustration ⇒ page 289.
Make sure that the coolant meets the required specifications ⇒ page 237.
Do not use a different type of additive if additive G12+ 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
⇒  page 237.
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 G12+ (dyed purple) may be mixed with G12 (dyed red)
and also with G 11. 

239
Checking and refilling levels
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 230.
● 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 G12 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 fluid has been lost, wait for the engine to cool down
before putting in cold coolant. This avoids damaging the engine. Large cool-
ant losses are an indication of leaks in the cooling system. See a special-
ised workshop immediately and have the cooling system checked. Other-
wise, there is a risk of engine damage. Washer fluid and windscreen wiper blades
Topping up washer fluid 
The water for cleaning the windscreen should always be
mixed with washer fluid.
Fig. 170 In the engine
compartment: Cap of
windscreen washer fluid
reservoir.
The windscreen washer and the headlight washers 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 rec-
ommend that you always add a product to the windscreen washer fluid. Ap-
proved 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. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

240Checking and refilling levels
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 230.
CAUTION
● Never put radiator anti-freeze or other additives into the windscreen
washer fluid.
● Always use approved windscreen cleansing products diluted as per in-
structions. If you use other washer fluids or soap solutions, the tiny holes in
the fan-shaped nozzles could become blocked. Changing 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.
Fig. 171 Windscreen
wipers in the service po-
sition
Fig. 172 Changing the
front wiper blades


243
Checking and refilling levels
Brake fluid Checking the brake fluid level
The brake fluid is checked at the intervals given in the serv-
ice schedule.
Fig. 174 In the engine
compartment: Brake fluid
reservoir cover
– 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 brake fluid reservoir is shown in the corresponding en-
gine compartment illustration ⇒ page 289. 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
instrument panel will warn you if the brake fluid level is too low ⇒ page 77.
WARNING
Before opening the bonnet to check the brake fluid level, read and ob-
serve the warnings ⇒ page 230.

Changing the brake fluid
The Maintenance Programme indicates the brake fluid
change intervals. 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 230 in
section “Safety notes for 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.
It is important that you use only brake fluid compliant with 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.
● Before opening the bonnet to check the brake fluid level, read and ob-
serve the warnings ⇒ page 230. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

245
Checking and refilling levels
WARNING (Continued)
● 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 re-
verse 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. This could cause an explosion. Replace
a damaged battery immediately.
CAUTION
● Never disconnect the battery if the ignition is switched on or if the en-
gine is running. This could damage the electrical system or electronic com-
ponents.
● 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 freezing. 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 engine bonnet and the battery cover ⇒ 
in Safety in-
structions on working in the engine compartment on page 231
⇒ 
in Warnings on handling the battery on page 244.
– 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 disperse.
The position of the battery is shown in the corresponding engine compart-
ment diagram ⇒ page 289.
The “magic eye” indicator, located on the top of the battery changes colour,
depending on the charge state and electrolyte level of the battery.
There are two different colours:
● Black: correct charge status.
● Transparent/clear yellow: the battery must be replaced. Contact a spe-
cialist workshop. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

249
Wheels and tyres
WARNING
● Never adjust tyre pressure when the tyres are hot. This may damage
or even burst the tyres. Risk of accident!
● An insufficiently inflated tyre flexes a lot more at high speeds and
causes significant heating of the tyre. Under these conditions, the tyre
bead may be released or the tyre may burst. Risk of accident!
For the sake of the environment
Under-inflated tyres lead to increased fuel consumption and tyre wear. 
Significant tyre pressure loss
The tyre symbol  is displayed and indicates that the tyre pressure
of at least one tyre is insufficient.
– Stop the vehicle.
– Switch the engine off.
– Check the tyre(s).
– Change the wheel if necessary ⇒ 
page 257. Tyre service life
The service life of tyres is dependent on tyre pressure, driv-
ing style and fitting.
Fig. 175 Tyre tread wear
indicators
Fig. 176 Diagram for
changing wheels

Safety FirstOperating InstructionsPractical TipsTechnical Specifications

256If and when
If and when
Tools, tyre repair kit and spare wheel Vehicle Tools
The vehicle onboard tools are located under the floor panel
in the luggage compartment.
– Lift the cover of the luggage compartment, by pulling it up with
a finger in the fitting.
– Take the on-board tools out of the vehicle.
The tool kit includes:
● Jack*
● Hook for removing wheel covers* or hub caps*
● Box spanner for wheel bolts*
● Towing eye
● Adapter for the anti-theft wheel bolts*
Some of the items listed are only provided in certain model versions, or are
optional extras.
WARNING
● The factory-supplied jack* is only designed for changing wheels on
this model. On no account attempt to use it for lifting heavier vehicles or
other loads. Risk of injury.
● Use the jack* only on firm, level ground.
WARNING (Continued)
● Never start the engine when the vehicle is on the jack. Risk of acci-
dent.
● If work is to be carried out underneath the vehicle, this must be se-
cured by suitable stands. Otherwise, there is a risk of injury.

Compact temporary spare wheel*
The compact spare wheel (emergency wheel for vehicles
without the anti-puncture kit) should only be used when
strictly necessary.
Fig. 177 Luggage com-
partment. Access to the
spare wheel
The temporary spare wheel is stored under the floor panel in the luggage
compartment and is attached by a thumbnut. 

257
If and when
How to use the temporary spare wheel
Should you ever have a punctured tyre, the temporary spare wheel is only
intended for temporary use until you can reach a workshop. The standard-
size road wheel should be replaced as soon as possible.
Please note the following restrictions when using the temporary spare
wheel. This spare wheel has been specially designed for your vehicle, thus,
it cannot be changed with the spare wheel from another vehicle.
No other type of tyre (normal summer or winter tyre) may be fitted on the
compact temporary spare wheel rim.
Snow chains
For technical reasons, snow chains must not be used on the compact tem-
porary spare wheel.
If you have a puncture on one of the front wheels when using snow chains,
fit the compact temporary spare in place of one of the rear wheels. You can
then attach the snow chains to the wheel taken from the rear and use this
wheel to replace the punctured front wheel.
WARNING
● The tyre pressures must be checked and corrected as soon as possi-
ble. The emergency tyre pressure for dimensions 125/70R16 125/70R18
135/90R16 is 4.2 bar; for all other tyre dimensions please refer to the la-
bel on the fuel cap. Failure to do so could result in an accident.
● Do not drive faster than 80 km/h. Higher speeds can cause an acci-
dent.
● Avoid heavy acceleration, hard braking and fast cornering. Risk of ac-
cident.
● Never use two or more compact spare tyres at the same time, risk of
accident.
● No other type of tyre (normal summer or winter tyre) may be fitted on
the compact temporary spare wheel rim.
 Tyre repair kit
The tyre repair kit (for vehicles not including a spare wheel)
is stored under the floor panel in the luggage compartment.
In the event of a punctured tyre, your vehicle is equipped with the Tyre Mo-
bility System.
The tyre repair kit consists of a container with sealing compound to repair
the puncture and a compressor to generate the required tyre pressure. The
kit will reliably seal punctures up to a size of about 4 mm caused by the
penetration of a foreign body into the tyre.
Note
● Seek professional assistance if the repair of a tyre puncture is not possi-
ble with the sealing compound. 
Wheel change Preparation work
What you must do before changing a wheel.
– If you have a flat tyre or puncture, park the vehicle as far away
from the flow of traffic as possible. Choose a location that is as
level as possible.
– All passengers should leave the vehicle. They should wait in a
safe area (for instance behind the roadside crash barrier).
– Switch off the engine. Switch on the hazard warning lights.
– Apply the handbrake firmly. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

266If and when
Fuses
Changing a fuse
Blown fuses must be replaced
Fig. 184 Left side of
dash panel: Fuse box cov-
er
Fig. 185 Fuse box cover
in engine compartment Fuse cover underneath the steering wheel
–
Switch off the ignition and the component concerned.
– Identify the fuse corresponding to the damaged electric con-
sumer ⇒ page 268.
– Take the plastic clip from inside the fuse cover, fit it onto the
blown fuse and pull the fuse out.
– Replace the blown fuse (which will have a melted metal strip)
with a new fuse of the same ampere rating.
Fuse cover in engine compartment
– Switch off the ignition and its failed electrical component.
– Prise off the fuse cover in the engine compartment by pressing
the tabs towards the centre of the cover ⇒ fig. 185.
– Identify the fuse for the failed component ⇒ page 268.
– Take the plastic clip from inside the fuse cover (at left-hand end
of the dash panel), fit it onto the blown fuse and pull the fuse
out.
– Replace the blown fuse (which will have a melted metal strip)
with a new fuse of the same ampere rating.
– Carefully fit the fuse cover back on to ensure no water can enter
the fuse box.
The individual electrical circuits are protected by fuses. The fuses are loca-
ted behind a cover at the left-hand end of the dash panel and on the left-
hand side of the engine compartment. 

268If and when
Fuses on left side of dash panel
Fuses
NumberConsumerAmps1Vacant 2Vacant 3Vacant 4Vacant 5Vacant 6Vacant 7Vacant 8Vacant 9Airbag510RSE input (roof screen)1011Vacant 12Left xenon headlight10
13Instrument panel (oil level)/Cable control unit
(BCM)/Heater/ABS, ESC (ESP)/Park Pilot/Gate-
way/Flow meter5
14Gearbox/Power steering/Brake light sensor/Trail-
er/ABS, ESC (ESP)/Haldex/Light switch10
15Heated windscreen / Instrument lighting / Diag-
nosis switchboard/Engine management/Addi-
tional heating/AFS headlights/Park Pilot10
16Right xenon headlight10
17Engine management / RSE system with START
STOP10
18Kombi / levers with START STOP519Navigation/ radio with START STOP15
20Park Pilot (parking aid)/Gear lever/ESC (ESP) con-
trol unit10
NumberConsumerAmps21Vacant 22Volumetric alarm sensor/ Alarm horn523Diagnosis / Rain sensor / Light switch1024Trailer hook pre-installation assistant1525Vacant 26Vacuum pump2027RSE supply (Ceiling display) without START STOP1028Rear window wiper motor2029Vacant 30Cigarette lighter / socket2031Vacant 32Vacant 33Heater4034Vacant 35Vacant 36Vacant 37Vacant 38Vacant 39Trailer control unit (coupling)15
40Trailer control unit (turn signals, brakes and left
side)20
41Trailer control unit (fog light, reverse light and
right side)20
42BCM wiring switchboard2043Trailer pre-installation4044Heated rear window2545Electric windows (front)3046Rear electric windows3047Engine (Fuel control unit, petrol relay)15