2013 Seat Leon SC coolant reservoir

252Checking and refilling levels
WARNING (Continued)
● Protect face, hands and arms by covering the cap with a large, thick
rag to protect against escaping coolant and steam.
● If it is necessary to work in the engine compartment while the engine
is running, the rotating components (for example, poly-V belt, alternator,
radiator fan) and the high voltage ignition system are an additional haz-
ard.
● Observe the following additional warnings if work on the fuel system
or the electrical system is necessary:
–Always disconnect the battery from the on-board network.
– Do not smoke.
– Never work near naked flames.
– Always keep an approved fire extinguisher immediately available.
CAUTION
When changing or topping up service fluids, make absolutely certain that
you fill the fluids into the correct reservoirs. Using the wrong fluids could
cause serious malfunctions and engine damage!
For the sake of the environment
Inspect the ground underneath your vehicle regularly so that any leaks are
detected at an early stage. If you find spots of oil or other fluids, have your
vehicle inspected at the workshop.
Note
On right-hand drive vehicles* some of the containers/reservoirs mentioned
below are located on the other side of the engine compartment. Opening the bonnet
The bonnet is released from inside the vehicle.
Fig. 153 Release lever in driver footwell and cam below the bonnet
Check that the windscreen wiper arms are not unfolded. Otherwise
the paint may be damaged.
The bonnet can only be unlocked when the driver door is open.
– Pull the lever under the dash panel in the direction of the arrow
1
⇒ Fig. 153.
– Lift the bonnet slightly ⇒ 
.
– Press the release catch under the bonnet upwards ⇒ Fig. 153
2
. This will release the arrester hook under the bonnet.
– Open the bonnet. Release the bonnet stay and secure it in fix-
ture designed for this in the bonnet. 

259
Checking and refilling levels
– Top up the coolant only if there is still coolant in the expansion
tank, otherwise you could damage the engine. If there is no
coolant in the expansion tank, do not continue driving. You
should obtain professional assistance ⇒ 
.
– If there is still some coolant in the expansion tank, top up to the
upper mark.
– Top up with coolant to the upper mark until the level becomes
stable.
– Screw the cap back on correctly.
Any loss of coolant fluid normally indicates a leak in the cooling system.
Take the vehicle straight to a specialised workshop to have the cooling sys-
tem examined. If there are no leaks in the engine cooling system, a loss of
coolant can only occur if the coolant boils and is forced out of the system as
a result of overheating.
WARNING
● The cooling system is under pressure. Do not unscrew the cap on the
coolant expansion tank when the engine is hot: risk of burns!
● The antifreeze and coolant fluid can be a health hazard. Therefore,
the antifreeze should be stored in the original container in a safe place
out of reach of children. Failure to comply could result in poisoning.
● If working inside the engine compartment, remember that, even when
the ignition is switched off, the radiator fan may start up automatically,
and therefore there is a risk of injury.
CAUTION
Do not top up the expansion tank with coolant fluid if it is empty! Air could
enter the cooling system. In this case, stop driving. Seek specialist assis-
tance. Otherwise, there is a risk of engine damage. Brake fluid
Fig. 157 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. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

309
Technical specifications
Engine specifications
Checking fluid levels
From time to time, the levels of the different fluids in the ve-
hicle must be checked. Never fill with incorrect fluids, other-
wise serious damage to the engine may be caused.
Fig. 202 Diagram for the location of the various elements Coolant expansion tank
Engine oil dipstick
Engine oil filler cap
Brake fluid reservoir
Vehicle battery (underneath the cover)
Windscreen washer reservoir
The checking and refilling of service fluids are carried out on the compo-
nents mentioned above. These operations are described in ⇒ page 251.
1
23456
Overview
You will find further explanations, instructions and restrictions on the tech-
nical specifications as of
⇒ page 304. 
Safety FirstOperating instructionsPractical TipsTechnical specifications