Seat Leon 2020 Owner's manual

Checking and refilling levels
accident!. A hydraulic jack is insufficient for
securing the v
ehicl
e and there is a risk of
injury.

Practical tips

Checking and refilling levels
Checking levels Fig. 223
Diagram for the location of the various el-
ements. From time to time, the levels of the different
fluids in the v
ehicl
e must be checked. Never
fill with incorrect fluids, otherwise serious
damage to the engine may be caused.
Coolant expansion tank ››› page 334
Engine oil level dipstick ››› page 333
Engine oil filler cap ››› page 333
Brake fluid reservoir ››› page 337
Battery 1)
››› page 338
1 2
3
4
5 Windscreen washer reservoir
› ›
› page 337 Note
The layout of parts may vary depending on
the engine . 6
Engine oil
Gener al not
es The engine comes with a special, multi-grade
oil that can be used all year r
ound.
Because the use of high-qualit

y oil is essen-
tial for the correct operation of the engine
and its long useful life, when topping up or
changing oil, use only those oils that comply
with VW standards. »1)
In plug-in hybrid vehicles (PHEV) the battery is
in the luggage compartment ››

› page 341
.
331

Practical tips
We recommend that the oil change be done
by a t echnical service or specialised w
ork-
shop.
If the engine oil level is too low
You can get information about the correct en-
gine oil for your vehicle at your workshop.
If the recommended engine oil is not availa-
ble, in the event of an emergency you can
change the oil once with a maximum of 0.5 L
of the next oil until the next oil change:
Petrol engines: standard VW 504 00,
VW 502 00, VW 508 00, ACEA C3 or
API SN.
Diesel engines: standard VW 509 00,
VW 507 00, VW 505 01, ACEA C3 or
API CK-4.
Have the oil changed by a specialised work-
shop.
SEAT recommends using original SEAT oil to
guarantee high SEAT engine performance.
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. CAUTION
Take the following into account if you have
r efill

ed with an engine oil different to those –
– specified in the aforementioned standards,
or by your SEAT t
echnical service centr

e:

Checking and refilling levels
WARNING
Observe the safety warnings ››
› in Con-
tr ol and w
arning lamps on page 91. Checking the engine oil level
Fig. 224
Engine oil dipstick. The engine oil dipstick indicates the level of
the oil.
Checking oil l
e

vel

Practical tips
The position of the oil filler opening is shown
in the corr esponding engine compartment il
-
lustration ››› page 331
.
Engine oil specification ››› page 331
. WARNING
Oil is highly inflammable! Ensure that no oil
comes int o cont

act with hot engine compo-
nents when topping up. CAUTION
If the oil level is above area ››

› Fig. 224
A ,
do not st ar
t the engine. This could result in
damage to the engine and catalytic con-
verter. Contact a specialised workshop. For the sake of the environment
The oil level must never be above zone
› ›

› Fig. 224
A . Otherwise oil can be drawn
in thr ough the cr
ankcase breather and leak
into the atmosphere via the exhaust sys-
tem. Note
Before a long trip, we recommend finding
an engine oil that conf orms t

o the corre-
sponding VW specifications and recom-
mend keeping it in the vehicle. This way, the
correct engine oil will always be available
for a top-up if needed. Engine oil change
We recommend that you have the engine oil
changed by a T
echnical Service

. WARNING
Only change the engine oil yourself if you
hav e the specialist kno

wledge required!

Checking and refilling levels
increased, but only up to 60 %; otherwise an-
tifr ee
ze protection will diminish and this will
worsen cooling.
When the coolant is topped up, use a mixture
of distilled water and at least 40 % of the
additive G12evo for optimal protection
against corrosion. Mixing G12evo with G13
(TL-VW 774 J), G12 plus-plus (TL-VW 774 G),
G12 plus (TL-VW 774 F), G12 (red) or G11
(green blue) engine coolants decreases pro-
tection again corrosion and should be avoi-
ded. WARNING
If there is not enough anti-freeze in the
cool ant syst

em, the engine may fail lead-
ing to serious damage.

Practical tips
Refilling coolant Fig. 227
In the engine compartment: marking
on cool ant e
xpansion tank. Fig. 228
Engine compartment: coolant expan-
sion t ank cap

. The coolant tank is located in the engine
compartment
››

› page 331
.
Top up coolant when the level is below the 
(minimum) mark. Checking coolant level

Checking and refilling levels
Brake fluid Check and r efill the br
ake fluidFig. 229
Engine compartment: brake fluid res-
erv oir cap

. The brake fluid reservoir is located in the en-
gine compartment
››

› page 331
.
Checking the brake fluid level
The brake fluid level must be between the 
and  markings.
However, if the brake fluid level goes down
noticeably in a short time, or drops below the mark, there may be a leak in the brake system. Seek specialist assistance. A warning
light on the instrument panel display monitors
the brake fluid level ››› page 89
.
In right-hand drive vehicles the brake fluid
reservoir is on the other side of the engine
compartment. Changing brake fluid
We r

ecommend that you have the brake fluid
changed by a Technical Service. WARNING
If the brake fluid level is low or unsuita-
bl e/ol

d brake fluid is used, the brake sys-
tem may fail or braking power may be re-
duced.

Practical tips
Check the water level in the windscreen
w asher r
eservoir regularly and top up as re-
quired.
The window washer tank contains liquid de-
tergent for the windscreen and rear window.