2019 Seat Leon octane

Checking and refilling levels
Natural gas: “CNG” means Compr essed
N at ur
al
Gas.
Type of petrol  Valid for: vehicles with petrol engines
The correct grade of petr ol is list

ed inside the
fuel tank flap.
The vehicle is equipped with a catalytic con-
verter and must only be run on unleaded
petrol. The petrol must comply with the
standard EN 228 and be sulphur-free. Fuels
with a 10% ethanol ratio can be refuelled
(E10) 1)
. The types of petrol are differentiated
by using the octane numbers (RON) or via
the anti-knock index (AKI).
Super unleaded petrol 95 octane petrol or
normal 91 octane petrol at least
We recommend refuelling with super 95 oc-
tane petrol (91 AKI). If not available, normal 91
octane petrol (87 AKI) (with a slight power
loss) may be used.
Super unleaded petrol, 95 octanes at
least
You should use super 95 octane petrol (91
AKI) at least. 3 If super is not available, if necessary, use nor
-
mal 91 oct ane petrol (87 AKI). In this case only
use moder at

e engine speeds and a light
throttle. Refuel with super as soon as possi-
ble.
Unleaded super plus 98 octane petrol or
super 95 octane petrol at least
We recommend refuelling with super plus 98
octane petrol (93 AKI). If not available: super
95 octane petrol (91 AKI) (with a slight power
loss).
If super is not available, if necessary, use nor-
mal 91 octane petrol (87 AKI). In this case only
use moderate engine speeds and a light
throttle. Refuel with super as soon as possi-
ble. CAUTION

Practical tips
Ethanol fuel  Valid for: vehicles with Totalflex engines
You can recognise v ehicl
es with Totalflex en-
gines 1)
by label on the fuel tank lid with with
the marking “Petrol/ethanol”.
Vehicles with Totalflex engine can run with
unleaded petrol (95 octane / 91 AKI) accord-
ing to ANP No. 57 and with fuels with any high
percentage of ethanol. The vehicle is refuel-
led in the same way as petrol refuelling.
Also consider that

Index
Net partition . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147, 148
Noise adaptiv e cruise contr
ol . . . . . . . . . . . . . . . . . . . . 276
br ak
es . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. 290
ESC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . 296
parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
refuelling natural gas . . . . . . . . . . . . . . . . . . . . . 323
tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346, 350
Number of seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . 13
O Octane (petrol) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69, 70 partial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . 73
total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . 73
Offroad Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Oil change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . 337
One-touch signalling function . . . . . . . . . . . . . . . . 121
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . 100 bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . 332
panoramic roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
tank cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322, 323
windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
114
Opening and closing . . . . . . . . . . . . . . . . . . . . . . . . 100 bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . 332
by remote control . . . . . . . . . . . . . . . . . . . . . . . . . 102
doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . 109
in the locking cylinder . . . . . . . . . . . . . . . . . . . . . 110
panoramic roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . 112
tank cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322, 323
windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
114
with the central locking switch. . . . . . . . . . . . . 103
Operating fault automatic gearbox . . . . . . . . . . . . . . . . . . . . . . . 258 Operation in winter
battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . 341
diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . 326
headlight washer . . . . . . . . . . . . . . . . . . . . . . . . . .
128
heated windscreen washer jets . . . . . . . . . . . . 128
salt on the roads . . . . . . . . . . . . . . . . . . . . . . . . . . 129
snow chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . 350
Original accessories . . . . . . . . . . . . . . . . . . . . . . . . 358
Original SEAT Spare Parts . . . . . . . . . . . . . . . . . . 358
Overview (left hand drive) . . . . . . . . . . . . . . . . . . . . . 8
Overview (right hand drive) . . . . . . . . . . . . . . . . . . . . 9
P Painting the vehicle care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . 361
Panoramic roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Panoramic sliding sunroof see Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . 299
Parking aid automatic activation . . . . . . . . . . . . . . . . . . . . . . 302
braking during the manoeuvre . . . . . . . . . . . . 304
fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303, 305
parking aid plus . . . . . . . . . . . . . . . . . . . . . . . . . . . 301
rear parking aid . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
sensors and camera: clean . . . . . . . . . . . . . . . . 361
setting the indications and audio sig-nals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303, 305
surroundings warning . . . . . . . . . . . . . . . . . . . . . 301
towing device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
trailer mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
visual indication . . . . . . . . . . . . . . . . . . . . . . . . . . 303
Parking aid system see Parking aid . . . . . . . . . . . . . . . . . 300, 301, 304 Parking brake
automatic connection . . . . . . . . . . . . . . . . . . . . 293
automatic disconnection . . . . . . . . . . . . . . . . . . 292
connecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
292
disconnecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
emergency brake function . . . . . . . . . . . . . . . . 293
Parking distance warning system see Parking aid . . . . . . . . . . . . . . . . . 300, 301, 304
Parking (automatic transmission) . . . . . . . . . . . . 258
ParkPilot see Parking aid . . . . . . . . . . . . . . . . . 300, 301, 304
Particulate filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Pedals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . 13, 14
Petrol additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
particulate filter . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 325
Power socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Power sockets trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . 311
Power steering see Electromechanical steering . . . . . . . . . . . 263
Preheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . 246
Preheating system control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Preheat the engine . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Press & Drive start button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
starting the engine . . . . . . . . . . . . . . . . . . . . . . . . 248
Properties of oils . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
R Radar sensors . . . . . . . . . . . . . . . . . . . . . . . . . . 273, 278
387