2007-2011 Seat Leon 4 Door Checking and refilling levels -> Working in the engine compartment User Manual
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Checking and refilling levels -> Working in the engine compartment for Your Seat Leon 4 Door Second Generation (2007-2011)

Checking and refilling levels 205
Safety First Operating instructions Practical tips Technical Data
Winter driving
Diesel can thicken in winter.
Winter-grade diesel
When using “summer-grade diesel fuel”, difficulties may be experienced at
sub-zero temperatures because the fuel thickens due to wax separation.
Therefore, “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 generally sold
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 fuel filter 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 place 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 207.
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 you to have service fluids and consumables
replaced by an Authorised Service Centre. Please observe the relevant
instructions ⇒ page 200. The engine compartment of any motor vehicle is a
hazardous area ⇒ .
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Checking and refilling levels206
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. There 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 254. 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, there 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)
leon_ingles Seite 206 Montag, 26. Januar 2009 4:29 16
Checking and refilling levels 207
Safety First Operating instructions Practical tips 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. 136 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. 136 Detail of foot-
well area on driver's side:
lever for unlocking the
bonnet.
Fig. 137 Arrester hook
for bonnet.
leon_ingles Seite 207 Montag, 26. Januar 2009 4:29 16

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