check engine Seat Altea XL 2010 User Guide
Page 173 of 312
Driving171
Safety First
Operating instructions
Practical tips
Technical Data
If the engine does not start immediately, switch the starter off after 
10 seconds and try again after half a minute. If the engine still does not start, 
the fuel pump fuse should be checked 
⇒page 263, “Fuses”.
WARNING
•Never start or run the engine in unventilated or closed rooms. The 
exhaust fumes contain carbon monoxide, an odourless and colourless 
poisonous gas. Risk of fatal accidents. Carbon monoxide can cause loss of 
consciousness. It can also cause death.•Never leave the vehicle unattended if the engine is running.•Never use “cold start sprays”, they could explode or cause the engine 
to run at high revs. Risk of injury.Caution
•When the engine is cold, you should avoid high engine speeds, driving at 
full throttle and over-loading the engine. Risk of engine damage.•The vehicle should not be pushed or towed more than 50 metres to start 
the engine. Unburnt fuel could enter the catalytic converter and damage it.•Before attempting to push-start or tow a vehicle in order to start it, you 
should first try to start it using the battery of another vehicle. Note and follow 
the instructions  ⇒page 276, “Jump-starting”.For the sake of the environment
Do not warm-up the engine by running the engine with the vehicle stationary. 
You should drive off as soon as you start the engine. This helps the engine 
reach operating temperature faster and reduces emissions.
Starting diesel engines
The engine can only be started using a genuine SEAT key with 
its correct code.– Move the gear lever to the neutral position and depress the 
clutch pedal thoroughly and hold it in this position for the starter 
to turn the engine on.
– Turn the ignition key to the starting position.
– Turn the ignition key to position  ⇒page 169, fig. 139   . The 
indication lamp 
 will light for engine pre-heating.
– When the warning lamp turns off, turn the key to position   to  start the engine. Do not press the accelerator.
– Let go of the ignition key as soon as the engine starts, the starter  motor must not be allowed to run on with the engine.
When starting a very cold engine, it may be a little noisy for the first few 
seconds until oil pressure has built up in the hydraulic valve compensators. 
This is quite normal, and no cause for concern.
If there are problems starting the engine, see  ⇒page 276.
Glow plug system for the diesel engine
To avoid unnecessary discharging of the battery, do not use any other major 
electrical equipment while the glow plugs are pre-heating.
Start the engine as soon as the glow plug warning lamp  ⇒page 80 goes out.
Starting the engine after the fuel tank has been completely run dry
If the fuel tank has been completely run dry, it may take longer than normal 
(up to one minute) to start the engine after refuelling with diesel fuel. This is 
because the system must eliminate air first.
A1A2
AlteaXL_EN.book  Seite 171  Dienstag, 1. September 2009  10:37 10 
Page 175 of 312
Driving173
Safety First
Operating instructions
Practical tips
Technical Data
Driving with LPG*
 switch.
Warning light  OFF – Running on petrol
Warning light  ON – Running on LPG
Your SEAT vehicle has a bivalent engine able to run on either LPG or petrol. 
The LPG tank  ⇒page 222, “LPG refuelling” is in the spare wheel well  ⇒.
It is possible to change from LPG to petrol while the engine is running, even 
if the vehicle is moving, by pressing the   button  ⇒fig. 140  . The 
selected operating mode is shown by the lights  OFF   (running on petrol) 
and  ON   (running on LPG).
Starting the engine
The engine is always started with petrol, even when LPG was being used 
when it was switched off. Automatic switch from petrol to LPG
After checking, the system automatically switches from petrol to LPG 
provided the following conditions are met:
•There is enough LPG in the tank.•The temperature of the vehicle coolant is above 30°C.•Engine speed while driving is above 1200 rpm.•The   button   is pressed and the warning light 
ON   is flashing or 
the engine was using LPG when it was switched off.
When these conditions are met, the system switches to LPG mode and the  ON 
lamp is lit  .
Automatic switch from LPG to petrol
The system automatically switches from LPG to petrol in the following cases:•When the engine is started.•If the LPG tank is empty.
Fig. 140  Centre console: gas system control warning 
lights and switch.
A1
GAS
A2A3
GAS
A1
A2
A3
GAS
A1
A3
A3
AlteaXL_EN.book  Seite 173  Dienstag, 1. September 2009  10:37 10 
Page 201 of 312
Intelligent technology199
Safety First
Operating instructions
Practical tips
Technical Data
Caution
•Never let the brakes “drag” by leaving your foot on the pedal when you do 
not really intend to brake. This overheats the brakes, resulting in longer stop-
ping distances and greater wear.•Before driving down a long, steep gradient, it is advisable to reduce speed 
and change to a lower gear (or move the selector lever to a lower gear position 
if your car has automatic transmission). This makes use of engine braking 
and prolongs the service life of the brakes. If you still have to use the brakes, 
it is better to brake firmly at intervals than to apply the brakes continuously.Note
•If the brake servo is not functioning due to a malfunction, or if the vehicle 
has to be towed, you will have to press the brake pedal considerably harder 
to make up for the lack of servo assistance.•If you wish to equip the car with accessories such as a front spoiler or 
wheel covers, it is important that the flow of air to the front wheels is not 
obstructed, otherwise the brakes can overheat.Power steering (servotronic*)
The power steering assists the driver when turning the 
steering wheel (with the engine running).The power steering assists the driver by reducing the force needed to turn the 
steering wheel. In cars equipped with servotronic* power steering the degree 
of power assistance is regulated electronically  according to road speed.
The power  steering will keep on working even if the  servotronic* device fails. 
The degree of power assistance will, however, no longer adapt to different 
speeds. If the electronic regulating system is not working properly, this is 
most noticeable when turning the steering wheel at low speeds (for instance  when parking) – more effort will be required than usual. The fault should be 
corrected by a qualified workshop as soon as possible.
The power steering does not work if the engine is off. In this case the steering 
wheel is very hard to turn.
If the steering is held at its 
turning limit when the car is stationary, this will 
place an excessive load on the power steering system. Turning the steering 
wheel to its limit places a load on the system, which causes noise. It will also 
reduce the idling speed of the engine.
Caution
When the engine is running, do not turn the steering wheel to its limit for 
more than 15 seconds. Otherwise, there is a risk of damaging the power 
steering.
Note
•If the power steering should fail at any time or the engine is switched off 
(for instance when being towed), the car can still be steered. However, more 
effort will be required to turn the steering wheel.•If the system is leaking or malfunctioning, please take the car to a quali-
fied workshop as soon as possible.•The power steering requires a special hydraulic fluid. The container is 
located in the engine compartment (front left). The correct fluid level in the 
reservoir is important for the power steering to function properly. The 
hydraulic fluid level is checked at the Inspection Service.
AlteaXL_EN.book  Seite 199  Dienstag, 1. September 2009  10:37 10 
Page 202 of 312
Driving and the environment
200Driving and the environmentRunning-inRunning in a new engine
The engine needs to be run-in over the first 1,500 km.Up to 1,000 kilometres
– Do not drive faster than two thirds of top speed.
– Do not accelerate hard.
– Avoid high engine revolutions.
– Do not tow a trailer.
From 1000 to 1500 km
–Speeds can be  gradually increased to the maximum road speed 
or maximum permissible engine speed (rpm).During its first few hours of running, the internal friction in the engine is 
greater than later on, when all the moving parts have bedded in.
For the sake of the environment
If the engine is run in gently, its life will be increased and its oil consumption, 
reduced.
Braking effect and braking distance
The braking effect and braking distance are influenced by 
driving situations and road conditions.The efficiency of the brakes depends directly on the brake pad  wear. The rate 
of wear of the brake pads depends to a great extent on the conditions under 
which the vehicle is operated and the way the vehicle is driven. If you often 
drive in town traffic, drive short distances or have a sporty driving style, we 
recommend that you have the thickness of your brake pads checked by an 
Authorised Service Centre more frequently than recommended in the Service 
Schedule.
If you drive with wet brakes , for example, after crossing water areas, in heavy 
rainfall or even after washing the car, the effect of the brakes is lessened as 
the brake discs are wet or even frozen (in winter): The brakes should be 
“dried” by pressing the pedal to restore full braking effect.
WARNING
Longer braking distances and faults in the brake system increase the risk 
of accidents.•New brake pads must be run in and do not have the correct friction 
during the first 400 km. However, the reduced braking capacity may be 
compensated by pressing on the brake pedal a little harder. This also 
applies when new brake pads are fitted.•If brakes are wet or frozen, or if you are driving on roads which have 
been gritted with salt, braking power may set in later than normal.•On steep slopes, if brakes are excessively used, they will overheat. 
Before driving down long steep slopes, it is advisable to reduce speed and 
change down into a lower gear (or move the selector lever to a lower gear if 
AlteaXL_EN.book  Seite 200  Dienstag, 1. September 2009  10:37 10 
Page 205 of 312
Driving and the environment203
Safety First
Operating instructions
Practical tips
Technical Data
during this initial warm-up phase. It is therefore best to drive off immediately 
after starting the engine. Avoid running the engine at high speed.
Periodic maintenance
Periodic maintenance work guarantees that, before beginning a journey, you 
will not waste fuel. A well-serviced engine gives you the benefit of 
improved 
fuel efficiency  as well as maximum reliability and an enhanced resale value.
A badly serviced engine can consume up to 10% more fuel than necessary.
Avoid short journeys
To reduce the consumption and emission of polluting gases, the engine and 
the exhaust filtration systems should reach the optimum  service tempera-
ture .
With the engine cold, fuel consumption is proportionally higher. The engine 
does not warm up and fuel consumption does not regularise until having 
driven some  four kilometres. This is the reason why we recommend avoiding 
short trips wherever possible.
Maintain the correct tyre pressures
Bear in mind that keeping the tyres at an adequate pressure saves fuel. If the 
tyre pressures are just 1 bar too low, this can put the fuel consumption up by 
as much as 5%. Due to the greater rolling resistance, under-inflation also 
increases  tyre wear and impairs handling.
The tyre pressures should always be checked when the tyres are  cold.
Do not use  winter tyres  all through the year: they will increase fuel consump-
tion by up to 10%.
Avoid unnecessary weight
Every kilo of extra weight  will put up the fuel consumption, so it is worth 
checking the luggage compartment occasionally to make sure that no unnec-
essary loads are being transported.
A roof carrier is often left in place for the sake of convenience, even when it is 
no longer needed. At a speed of 100-120 km/h your car will use about 12%  more fuel as a result of the extra wind resistance caused by the roof carrier 
even when it is empty.
Save electrical energy
The engine activates the alternator, which produces electricity. With the need 
for electricity, fuel consumption is also increased. Because of this, always 
turn off electrical equipment when you do not need them. Examples of equip-
ment that use a lot of electricity are: the fan at high speeds, the rear window 
heating or the seat heaters*.
 Environmental friendlinessEnvironmental protection is a top priority in the design, choice of materials 
and production of your new Seat.
Design measures for economical recycling•Joints and connections designed for ease of dismantling•Modular construction to facilitate dismantling•Increased use of single-grade materials•Plastic parts and elastomers are labelled in accordance with ISO 1043, 
ISO 11469 and ISO 1629
Choice of materials•Nearly all materials used can be recycled•Similar types of plastics grouped together for easy recycling•Recycled materials used in manufacture•Reduction of the plastic volatile components•CFC-free refrigerant in air conditioning
Compliance with prohibited materials laws : cadmium, asbestos, lead, 
mercury, chrome VI.
AlteaXL_EN.book  Seite 203  Dienstag, 1. September 2009  10:37 10 
Page 207 of 312
Trailer towing205
Safety First
Operating instructions
Practical tips
Technical Data
Trailer towingInstructions to followYour vehicle may be used to tow a trailer when fitted with the correct equip-
ment.
If the car is supplied with a factory-fitted  towing bracket it will already have 
the necessary technical modifications and meet the statutory requirements 
for towing a trailer. For the  after-market fitting of a trailer towing bracket see 
⇒ page 207.
Connectors
Your vehicle is fitted with a 12-pin connector for the electrical connection 
between the trailer and the vehicle.
If the trailer has a 7-pin plug  you will need to use an adapter cable. This is 
available in any SEAT dealer.
Trailer weight / draw bar loading
Never exceed the authorised towing limit. If you do not load the trailer up to 
the maximum permitted trailer weight, you can then climb correspondingly 
steeper slopes.
The maximum trailer weights listed are only applicable for  altitudes up to 
1,000 m above sea level. With increasing altitude the engine power and 
therefore the vehicle's climbing ability are impaired because of the reduced 
air density. The maximum trailer weight has to be reduced accordingly. The 
weight of the vehicle and trailer combination must be reduced by 10% for 
every further 1,000 m (or part thereof). The gross combination weight is the 
actual weight of the laden vehicle plus the actual weight of the laden trailer. 
When possible, operate the trailer with the maximum permitted draw bar 
weight  on the ball joint of the towing bracket, but do not exceed the specified 
limit. The figures for 
trailer weights and  draw bar weights that are given on the 
data plate of the towing bracket are for certification purposes only. The 
correct figures for your specific model, which may be  lower than these figures 
for the towing bracket, are given in the registration documents  ⇒Section 
“Technical data”.
Distributing the load
Distribute loads in the trailer so that heavy objects are as near to the axle as 
possible. Loads carried in the trailer must be secured to prevent them 
moving.
Tyre pressure
Set tyre pressure to the maximum permissible pressure shown on the sticker 
on the inside of the fuel tank flap. Set the tyre pressure of the trailer tyres in 
accordance with the trailer manufacturer's recommendations.
Exterior mirrors
Check whether you can see enough of the road behind the trailer with the 
standard mirrors. If this is not the case, you should have additional mirrors 
fitted. Both exterior mirrors should be mounted on hinged extension 
brackets. Adjust the mirrors to give sufficient vision to the rear.
WARNING
Never transport people in a trailer. This could result in fatal accidents.
Note
•Towing a trailer places additional demands on the vehicle. We recom-
mend additional services between the normal inspection intervals if the 
vehicle is used frequently for towing a trailer.
AlteaXL_EN.book  Seite 205  Dienstag, 1. September 2009  10:37 10 
Page 217 of 312
Cleaning and caring for your vehicle215
Safety First
Operating instructions
Practical tips
Technical Data
Underbody sealant
The vehicle underbody is coated to protect it from chemical 
and mechanical damage.The protective coating can be damaged when driving. We recommend you to 
check the protective coating under the body and on the running gear, and 
reinstated if necessary, before and after the winter season.
We recommend you to go to your Authorised Service Centre to carry out repair 
work and additional anti-corrosion work.
WARNING
Do not apply underseal or anti-corrosion coatings to the exhaust pipes, 
catalytic converter or the heat shields on the exhaust system. The heat of 
the exhaust system or the engine could cause them to ignite! Fire hazard.Cleaning the engine compartment
Take special care when cleaning the engine compartment.Anti-corrosion treatment
The engine compartment and the surface of the power unit are given anti-
corrosion treatment at the factory.
Good corrosion protection is particularly important in winter when the car is 
frequently driven on salted roads. To prevent the salt corroding the vehicle, 
the entire engine compartment should be thoroughly cleaned before and 
after winter.
Yo u r  A u t h o r i s e d  S e r v i ce  Ce n t re has got the necessary equipment to provide 
the correct cleaning and preserving products. For this reason, we recommend 
having this work performed by them. The anti-corrosion protection is usually removed if the engine compartment 
is cleaned with grease removing solutions, or if you have the engine cleaned. 
On commissioning this work, ensure that all surfaces, seams, joints and 
components in the engine compartment are given anti-corrosion treatment.
WARNING
•When working in the engine compartment, always observe the safety 
warnings  ⇒page 227.•Before opening the bonnet, switch the engine off, apply the parking 
brake firmly and always remove the key from the ignition.•Allow the engine to cool before you clean the engine compartment.•Do not clean the vehicle underbody, wheel arches without protecting 
your hands and arms. You may cut yourself on sharp-edged metal parts. 
Failure to comply could result in injury.•Moisture, ice and salt on the brakes may affect braking efficiency. Risk 
of accident. Directly after washing, avoid sudden and sharp braking.•Never touch the radiator fan. It is temperature-controlled and could 
start automatically, even when the key is removed from the ignition!For the sake of the environment
Fuel, grease and oil deposits could be removed when the engine is washed. 
The polluted water must be cleaned in an oil separator. For this reason, 
engine washing should be carried out only by a qualified workshop or a petrol 
station.
AlteaXL_EN.book  Seite 215  Dienstag, 1. September 2009  10:37 10 
Page 224 of 312
Checking and refilling levels
222LPG system*LPG refuelling
The LPG filler neck is behind the fuel cap, next to the petrol filler neck.
Refuelling with LPG
– Before  refuelling, stop the engine and switch off the ignition.
–Open the tank flap.
– Before  refuelling, please  read the instructions on the pump.
– Unscrew the cap of the gas filler neck  .
– Screw the required adapter   on the gas filler neck  .
– Refuel as indicated in the instructions on the pump.
–Unscrew the adapter  .
F ig.  160  Fuel tank ope n with  LPG fille r neck and adap ter.
Fig. 161  LPG tank in 
spare wheel well
A1
A2
A1
A2
AlteaXL_EN.book  Seite 222  Dienstag, 1. September 2009  10:37 10 
Page 225 of 312
Checking and refilling levels223
Safety First
Operating instructions
Practical tips
Technical Data
– Screw on the cap of the gas filler neck  .
– Close the tank flap.When the hose is removed from the tank, a small amount of LPG may spill out 
⇒.
The LPG tank  ⇒fig. 161  in the spare wheel well has a capacity of 39 litres. If 
the outside temperatures are very low, it may not be possible to completely 
fill the LPG tank.
Pump attachments
There are a variety of types of LPG pump, and the methods of use may vary. 
Therefore, let the pump operator fill the tank when refuelling for the first time 
or fill from another pump.
Noises when refuelling with LPG
When refuelling with LPG, noises may be heard. These noises are insignifi-
cant.
WARNING
Failure to refuel or handle LPG in the correct way could result in a fire, cause 
an explosion or lead to injury.•LPG is a highly explosive and inflammable substance. It may cause 
severe burns and other injury.•Switch off the engine before refuelling.•Always disconnect mobile phones and any other radiophony appli-
ances, as electromagnetic waves may produce sparks and cause a fire.•Do not remain in the vehicle while refuelling. If it is absolutely neces-
sary to enter the vehicle, close the door and touch a metal surface before 
touching the attachment again. This will prevent the generation of static 
electricity and any possible fires while refuelling.
•Small quantities of LPG may leak out after refuelling. If LPG comes into 
contact with skin, there is a risk of freezing.•Do not smoke and always keep bare flames away from the tank during 
refuelling. Failure to do so may lead to an explosion.
A1
WARNING (continued)
AlteaXL_EN.book  Seite 223  Dienstag, 1. September 2009  10:37 10 
Page 227 of 312
Checking and refilling levels225
Safety First
Operating instructions
Practical tips
Technical Data
The safety of the LPG system guarantees operation without risk. The following 
safety measures have been adopted:
•The LPG tank has a solenoid valve which closes automatically when the 
engine is switched off (ignition off) or when running on petrol.•A solenoid type main valve disconnects the supply of gas to the engine 
compartment when the engine is switched off or running on petrol.•A safety valve in the LPG tank with pipes to the outside prevents the gas 
from entering the vehicle compartment.•All anchorage points and materials have been designed to ensure the 
maximum possible levels of safety.
The condition of the LPG system should be checked regularly to guarantee 
safe driving conditions ⇒ . These checks are included in the Maintenance 
Programme.WARNING
•If there is a smell of gas or a suspected leak, stop the vehicle immedi-
ately and switch off the ignition. Open the doors to ventilate the vehicle. Do 
not carry on driving! Take the vehicle to a qualified workshop and have the 
fault repaired.•Immediately extinguish any cigarettes and remove from the vehicle any 
objects which might produce a spark or cause a fire, and switch off imme-
diately if gas is smelt or a leak is detected.•LGP tanks are subject to pressure and must be checked regularly. The 
owner of the vehicle must check that these services are performed 
correctly.•When parking the vehicle in a closed area (for example in a garage), 
make sure that there is adequate ventilation, either natural or mechanical, 
to neutralise the LPG in the event of a leak.
PetrolPetrol 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 Standard”).
Fuel types are differentiated by the  octane rating, e.g: 91, 95, 98 RON (RON 
= “Regulation Octane Number, unit for determining the knock resistance of 
petrol”). You may use petrol with a higher octane number than the one recom-
mended for your engine. However, this has no advantage in terms of fuel 
consumption and engine power.
The appropriate type of fuel for your vehicle is specified in your engine tech-
nical table. Section “Technical Data”.
Caution
•Petrol that follows EN 228 may be mixed with small quantities of ethanol. 
However, the so-called “bioethanol fuels” available at commercial establish-
ments with reference E50 or E85, which contain a high percentage of ethanol, 
may  not be used, as they will damage the fuel system.•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 full tank of leaded fuel would seriously impair the efficiency of the 
catalytic converter.
AlteaXL_EN.book  Seite 225  Dienstag, 1. September 2009  10:37 10