Seat Leon 2019 Owner's manual
Page 331 of 396
Checking and refilling levels
Page 332 of 396
Practical tips
It lights up
Diesel engine preheating system.
The engine can be started straight aw ay when the
l
amp switches off.
Flashes
Fault in the diesel engine management.
Have the engine checked as soon as possible by a
specialised w orkshop
.Note
While the control lamps , ;, or are
on, there might be faults in the engine, fuel consumption may go up and the engine
might l
ose power. Catalytic converter
To maintain the useful life of the catalytic
conv
er
ter
Page 333 of 396
Checking and refilling levels
Regeneration of the petrol (except the TSI
2. 0l engine) and diesel par
ticulat
e filt
er
Requirements for the regeneration journey:
the engine is at operating temperature.
Page 334 of 396
Practical tips
start up automatically, and therefore there
is a risk of injury.
Page 335 of 396
Checking and refilling levels
Opening the bonnet
The bonnet is r el
eased fr om inside the v
ehi-
cl
e.
Before opening the bonnet, make sure that
the windscreen wiper arms are in place
against the windscreen.
Page 336 of 396
Practical tips
Checking levels Fig. 316
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 check ed. Ne
v
er
fill with incorrect fluids, otherwise serious
damage to the engine may be caused.
Coolant expansion tank
Page 337 of 396
Checking and refilling levels
Petrol engines: st andar
d VW 504 00,
VW 502 00, VW 508 00, ACEA C3 or
API SN.
Diesel engines: st
andar
d VW 507 00,
VW 505 01, ACEA C3 or API CK-4.
Have the oil changed by a specialised work-
shop.
Using engine oil that is compliant with the VW
504 00 standard instead of VW 508 00
could increase consumption and the vehicle
Page 338 of 396
Practical tips
It lights up yellow
Check the engine oil level as soon as possible.
Replace oil as soon as you have the opport unit
y to
do so
Page 339 of 396
Checking and refilling levels
Before opening the bonnet, read and observe
the w arnings
Page 340 of 396
Practical tips
Cooling system Cool ant specifications The engine cooling system is supplied from
the factory with a specially treat
ed mixt
ure of
water and at least 40 % of the additive
G12evo (TL-VW 774 J), purple. This mixture
gives the necessary frost protection down to
-25