2012 Seat Leon 5D service

212Checking and refilling levels
Vehicles with diesel particulate filter*
The “Maintenance Programme” states whether your vehicle is fitted with a
diesel particulate filter.
Only VW 507 00 engine oil, with reduced ash formation, may be used in die-
sel engines equipped with particulate filter. Using other types of oil will
cause a higher soot concentration and reduce the life of the DPF. Therefore:
● Avoid mixing this oil with other engine oils.
● Only in exceptional circumstances, if the engine oil level is too low
⇒  page 212 and you cannot obtain the oil specified for your vehicle, you
can use a small quantity of oil (once) conforming to the VW 506 00,
VW 506 01, VW 505 00, VW 505 01 or ACEA B3/ACEA B4 specification. (up
to 0.5 l). 
Oil properties
Engine typeSpecificationPetrol without flexible service in-
tervalVW 502 00/VW 504 00
Petrol with flexible service inter-
val (LongLife)VW 504 00
Diesel. Engines without Particu-
late filter (DPF)VW 505 01/VW 506 01/VW 507 00
Diesel. Particulate Filter Engines
(DPF).
With or without flexible service in-
terval (with and without Long-
life) a)VW 507 00
a)
Only use recommended oils, otherwise you may damage the engine. 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 warranty.
Note
Before a long trip, we recommend finding an engine oil that conforms to the
corresponding VW specifications and recommend keeping it in the vehicle.
This way, the correct engine oil will always be available for a top-up if nee-
ded. 
Checking engine oil level
The engine oil dipstick indicates the level of the oil.
Fig. 108 Engine oil dip-
stick
Checking oil level
– Park the vehicle in a horizontal position. 

214Checking and refilling levels
–As soon as the oil level is in area B
, carefully close the cap.
The position of the oil filler opening is shown in the corresponding engine
compartment illustration ⇒ page 267.
Engine oil specification ⇒ page 211.
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 A do not start the engine. This could result
in damage to the engine and catalytic converter. Contact a specialised work-
shop.
For the sake of the environment
The oil level must never be above area A. Otherwise oil can be drawn in
through the crankcase breather and escape into the atmosphere via the ex-
haust 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 a Technical Serv-
ice.
The oil change intervals are shown in the Maintenance Programme.
WARNING
Only change the engine oil yourself if you have the specialist knowledge
required!
● Before opening the bonnet, read and observe the warnings
⇒ page 209.
● Wait for the engine to cool down. Hot oil may cause burn injuries.
● Wear eye protection to avoid injuries, such as acid burns, caused by
splashes of oil.
● When removing the oil drain plug with your fingers, keep your arm
horizontal 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.
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 spe-
cialist knowledge required, we recommend that you have the engine oil and
filter changed by a Technical Service.
● Never pour oil down drains or into the ground.
● Use a suitable container when draining the used oil. It must be large
enough to hold all the engine oil. 

217
Checking and refilling levels
Brake fluid
Fig. 111 Engine com-
partment: brake fluid res-
ervoir, lid
Checking the brake fluid level
The brake fluid level must be between the MIN and MAX markings.
However, if the brake fluid level goes down noticeably in a short time, or
drops below the MIN mark, there may be a leak in the brake system. Seek
specialist assistance. A warning light on the instrument panel display moni-
tors the brake fluid level ⇒ page 69.
In right-hand drive vehicles the brake fluid reservoir is on the other side of
the engine compartment.
Changing brake fluid
The regular intervals at which the brake fluid should be replaced are listed
in the Service Plan. We recommend you have the brake fluid replaced at a
SEAT Official Service, during an Inspection Service.
WARNING
● Brake fluid should be stored in the closed original container in a safe
place out of reach of children. Risk of poisoning!
● If the brake fluid is left in the system for too long and the brakes are
subjected to heavy use, vapour bubbles may form in the brake system.
This would seriously affect the efficiency of the brakes and the safety of
the vehicle. This may cause an accident.
CAUTION
Brake fluid should not come into contact with the vehicle paintwork, as it is
abrasive. 
Battery General information
The battery is located in the engine compartment and is almost mainte-
nance-free. It is checked as part of the Inspection Service. Nevertheless,
check the terminals are clean and have the correct tightening torque, espe-
cially in summer and winter.
Disconnecting the battery
The battery should only be disconnected in exceptional cases. When the
battery is disconnected, some of the vehicles functions are "lost" ( ⇒ table
on page 218). These functions will require resetting after the battery is re-
connected.
Deactivate the anti-theft alarm* before you disconnect the battery Other-
wise the alarm will be triggered. 
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218Checking and refilling levels
FunctionReprogrammingOne-touch function of the electric
windows⇒ page 101, One-touch opening and
closing*
Remote control keyIf the vehicle does not respond to the
key, they should be synchronised
⇒ page 90
Digital clock⇒ page 63
ESC warning lampAfter driving for a few metres, the
warning lamp goes out again.
If the vehicle is not used for long periods
The vehicle has a system for monitoring the current consumption when the
engine is left unused for long periods of time ⇒ page 187. Some functions,
such as the interior lights, or the remote door opening, may be temporarily
disabled to prevent the battery from running flat. These functions will come
back on as soon as the ignition is switched on and the engine started.
Winter conditions
During the winter, the starting power may be reduced, and if necessary, the
battery should be charged ⇒ 
in Important safety warnings for handling a
vehicle battery on page 218 
Important safety warnings for handling a vehicle battery
All work on batteries requires specialist knowledge. Please refer to a SEAT
Official Service or a workshop specialising in batteries: risk of burns or ex-
ploding battery!
The battery must not be opened. Never try to change the fluid level of the
battery. Explosive gas is released from the battery that could cause an ex-
plosion.
Wear eye protection.
Battery acid is very corrosive and caustic. Wear protective gloves
and eye protection. In the event of electrolyte splashes, rinse off
with plenty of water.
Fires, sparks, open flames and smoking are prohibited.
The battery should only be charged in a well-ventilated zone. Risk
of explosion!
Keep children away from acid and batteries!
WARNING
● When repairing or working on the electrical system, proceed as fol-
lows:
● 1. Remove the key from the ignition. The negative cable on the bat-
tery must be disconnected.
● 2. When the repair is finished, reconnect the negative pole of the bat-
tery.
● 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.
● Ensure that the vent hose is always connected to the battery.
● Never use damaged batteries. 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. 

220Checking and refilling levels
● Before starting any work on the battery, always observe the warnings lis-
ted under ⇒  page 218, Important safety warnings for handling a vehicle
battery.
● Do not forget to replace the battery coverings, where applicable. This
helps to protect against excess temperatures. This in turn extends the vehi-
cle service life.
For the sake of the environment
 Batteries contain toxic substances including sulphuric acid and lead. They
must be disposed of appropriately and must not be disposed of with ordi-
nary household waste. Make sure disconnected batteries cannot tip over.
Sulphuric acid could be spilt! 
Windscreen washer reservoir and wiper
blades
Windscreen washer
Fig. 112 Engine com-
partment: Windscreen
washer reservoir top The windscreen washer reservoir  contains the cleaning fluid for the wind-
screen, the rear window and the headlight washer system* ⇒ Fig. 112. Res-
ervoir capacity: ⇒ page 276.
To prevent the nozzles from becoming blocked with chalk deposits, fill res-
ervoir with water with a low calcium content (distilled water). Always add
washer fluid to the water (with anti-freeze additive in winter).
CAUTION
● Never put radiator anti-freeze or other additives into the windscreen
washer fluid.
● Never use washer fluid which contains paint thinners or solvents as it
can damage the paintwork. 

221
Checking and refilling levels
Cleaning and changing the wiper blades of the windscreen
and rear window
Fig. 113 Changing the
windscreen wiper blades
Fig. 114 Changing the
rear wiper blade
The windscreen wiper blades are supplied as standard with a layer of graph-
ite. This layer is responsible for ensuring that the wipe is silent. If the graph- ite layer is damaged, the noise of the water as it is wiped across the wind-
screen will be louder.
Check the condition of the wiper blades regularly.
If the wipers scrape
across the glass they should be changed if they are damaged, or cleaned if
they are dirty ⇒ 
.
Damaged wiper blades should be replaced immediately. Wiper blades are
available from specialised workshops.
Raising/lowering windscreen wiper arms
For windscreen wipers, please note: the wiper should be in service position
before being lowering ⇒ page 119. When raising or lowering an arm, it should only be held at the blade fasten-
ing point.
Cleaning windscreen wiper blades
● Raising the wiper arms.
● Use a soft cloth to remove dust and dirt from the windscreen wiper
blades.
● If the blades are very dirty, a sponge or damp cloth may be used ⇒ 
.
Changing the windscreen wiper blades
● Raising/lowering wiper arms
● Hold down the release button ⇒ Fig. 113 1
while gently pulling the
blade in the direction of the arrow.
● Fit a new wiper blade of the same length and design on to the wiper arm
and hook it into place.
● Rest the wiper arms back onto the windscreen.
Changing the rear wiper blade
● Raising/lowering the wiper arm.
● Turn the blade slightly ⇒ Fig. 114 (arrow A
).
● Hold down the release button 1 while gently pulling the blade in the
direction of the arrow B.

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223
Wheels and tyres
Wheels and tyres
Wheels
General notes
– When driving with new tyres, be especially careful during the
first 500 km (300 miles).
– 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 obstacle.
– Check from time to time if the tyres are damaged (punctures,
cuts, cracks or dents). Remove any foreign objects embedded in
the treads.
– Damaged wheels and tyres must be replaced immediately.
– Keep grease, oil and fuel off the tyres.
– Replace any missing valve caps as soon as possible.
– Mark the wheels before taking them off so that they rotate in
the same direction when put back.
– When removed, the wheels or tyres should be stored in a cool,
dry and preferably dark place.
New tyres
New tyres do not give maximum grip straight away and should therefore be
“run in” by driving carefully and at moderate speeds for about the first 500
km (300 miles). This will also increase the useful life of the tyres. 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
vibration or the car pulling to one side, this may indicate that one of the
tyres is damaged. Reduce speed immediately if there is any reason to sus-
pect that damage may have occurred. Inspect the tyres for damage. If no ex-
ternal damage is visible, drive slowly and carefully to the nearest special-
ised workshop and have the car inspected.
Tyres with directional tread pattern
An arrow on the tyre sidewall indicates the direction of rotation on single
drive tyres. Always note the direction of rotation indicated when mounting
the wheel. This guarantees optimum grip and helps to avoid aquaplaning,
excessive noise and wear.
Retrofitting Accessories
If you wish to change or fit wheels, rims or wheel trims, we recommend that
you consult with a SEAT Official Service centre for advice regarding current
techniques. 
Useful life of tyres
Correct inflation pressures and sensible driving habits will
increase the useful life of your tyres.
– Check tyre pressure at least once a month, and also prior to any
long trip. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

224Wheels and tyres
–The tyre pressure should only be checked when the tyres are
cold. The slightly raised pressures of warm tyres must not be re-
duced.
– Adjust tyre pressure to the load being carried by the vehicle.
– In vehicles with a tyre pressure indicator, save the pressure of
modified tyres ⇒ page 175, ⇒  page 223.
– Avoid fast cornering and hard acceleration.
– Inspect the tyres for irregular wear from time to time.
The useful life of your tyres depends on the following factors:
Tyre pressure
Tyre pressure values are indicated on the inside of the fuel tank flap.
Insufficient or excessive pressure greatly reduces the useful life of the tyres
and adversely affects vehicle performance and ride. Correct inflation pres-
sures are very important, especially at high speeds.
If you want a more comfortable ride, you can inflate tyres to the pressure
corresponding to the normal vehicle load (up to 3 people) if the vehicle is
carrying a normal load. If the vehicle is going to carry the maximum load,
the tyre pressure should be increased to maximum value indicated.
The tyre pressure must be adjusted according to the load the vehicle is car-
rying. We recommend adhering to the tyre pressure specifications for a max-
imum load.
Do not forget the spare wheel when checking the tyre pressures: Keep the
spare wheel inflated to the highest pressure required for the road wheels.
In the case of a minimised temporary spare wheel (125/70 R16 or 125/70
R18) inflate to a pressure of 4.2 bar as indicated on the tyre pressure label
on the fuel tank flap. Driving style
Fast cornering, heavy acceleration and hard braking (squealing tyres) all in-
crease tyre wear.
Wheel balance
The wheels on new vehicles are balanced. However, certain circumstances
may lead to imbalance (run-out), which is detected as vibrations in the
steering wheel.
Unbalanced wheels should be rebalanced, as they otherwise cause exces-
sive wear on steering, suspension and tyres. A wheel must also be reba-
lanced when a new tyre is fitted or if a tyre is repaired.
Incorrect wheel alignment
Incorrect wheel alignment causes excessive tyre wear, impairing the safety
of the vehicle. If you notice excessive tyre wear, you should check wheel
alignment at a SEAT Official Service.
WARNING
● Always adapt the tyre pressure accordingly when the vehicle load
changes.
● A tyre with low air pressure has to flex a lot more when the vehicle is
heavily loaded or at high speeds, therefore causing overheating to occur.
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 will increase fuel consumption. 