2015 Seat Leon SC fuel additives

Checking and refilling levels
Closing the fuel tank cap
● Check that the gas filler mouth retainer 2is not trapped with the filler nozzle. If neces-
s
ar
y
, place it in the filler mouth again.
● Insert the plug in the filler mouth.
● Close the tank flap. Make sure you hear it
click
into place. WARNING
Natural gas is a highly explosive, easily flam-
mab l

e substance. Incorrect handling of the
natural gas can cause accidents serious
burns and other injuries.
● Before refuelling with natural gas, engage
the fillin
g mouth correctly. If you can smell
gas, stop refuelling immediately. WARNING
The vehicle is not prepared to use liquefied
nat ur

al gas (LNG), and this fuel must not be
added under any circumstances. Liquefied
natural gas can cause the natural gas tank to
explode, resulting in serious injury. Note
● The fil lin

g nozzles of natural gas pumps
can differ in the way they are operated. If you
do not know, ask a qualified employee at the
petrol station to do the refuelling.
● Noises heard when refuelling are normal
and do not indicat
e the presence of a fault in
the system. ●
The v ehic

le natural gas system is prepared
both for refuelling with a small compressor
(slow refuel) and a large compressor (fast re-
fuel) in natural gas service stations. Fuel
Ty pe

s of petrol The correct grade of petrol is listed inside the
fuel
t

ank flap.
The vehicle is equipped with a catalytic con-
verter and must only be run on unleaded pet-
rol. The petrol must comply with European
Standard EN 228 or German standard DIN
51626-1 and must be unleaded. You can re-
fuel with a maximum ethanol proportion of
10 % (E10). The types of petrol are differenti-
ated by their octane rating (RON).
The following titles appear on the corre-
sponding adhesive on the fuel tank flap:
Super unleaded 95 octane or normal 91 oc-
tane unleaded petrol
We recommend you use super 95 octane pet-
rol. If this is not available: normal 91 octane
petrol, with a slight decrease in power. Super unleaded petrol with a minimum of 95
octane
s
Y

ou should use super petrol with a minimum
of 95 octanes.
If super is not available, in an emergency you
may refuel with normal 91 octane petrol. In
this case only use moderate engine speeds
and a light throttle. Refuel with super as soon
as possible.
Super unleaded 98 octane or super 95 oc-
tane unleaded petrol
We recommend you use super plus 98 octane
petrol. If this is not available: super 95 oc-
tane petrol, with a slight decrease in power.
If super is not available, in an emergency you
may refuel with normal 91 octane petrol. In
this case only use moderate engine speeds
and a light throttle. Refuel with super as soon
as possible.
Petrol additives
The quality of the fuel influences the behav-
iour, power and service life of the engine.
This is why the petrol you use should carry
suitable additives already included by the
petrol industry, free of metals. These addi-
tives will help to prevent corrosion, keep the
fuel system clean and prevent deposits from
building up in the engine.
If good-quality petrol with metal-free addi-
tives is not available or engine problems »
243
Technical data
Advice
Operation
Emergencies
Safety

Advice
arise, the necessary additives must be added
when r ef
uel
ling ››› .
Not al
l
petrol additives have been shown to
be effective. The use of unsuitable petrol ad-
ditives may cause significant damage to the
engine and the catalytic converter. Metal ad-
ditives should never be used. Metal additives
may also be contained in petrol additives for
improving anti-detonation ratings or octane
ratings ››› .
S EA
T r

ecommends “genuine Volkswagen
Group Fuel Additives for petrol engines”.
These additives can be bought at SEAT deal-
ers, where information on how to use them
can also be obtained. CAUTION
● Do not r ef

uel if the filler indicates that the
fuel contains metal. LRP ( lead replacement
petrol) fuels contain high concentrations of
metal additives. Using them may damage the
engine!
● Never refuel with fuels containing a large
proportion of
ethanol (for example, E50, E85).
This could damage the fuel system.
● Just filling one full tank of leaded fuel or
fuel c
ontaining other metal additives would
seriously impair the efficiency of the catalytic
converter. ●
Only u

se fuel additives that have been ap-
proved by SEAT. Octane boosting or anti-
knock additives may contain metal additives
that could seriously damage the engine or
the catalytic converter. These additives must
not be used.
● High engine speed and full throttle can
damag
e the engine when using petrol with an
octane rating lower than the correct grade for
the engine. Note
● You m a

y use petrol with a high octane num-
ber than the one recommended for your en-
gine.
● In those countries where unleaded petrol is
not avai
lable, you may refuel with a fuel with
a low lead content. Diesel fuel
Please note the information on the inside of
the f
uel
t

ank flap.
We recommend the use of diesel fuel which
complies to European standard EN 590. If
diesel fuel which meets European standard
EN 590 is not available, the Cetane number
(CZ) must, at minimum, be 51. If the engine
is equipped with a particulate filter, the sul- phur content of the fuel must be below 50
parts

per million.
Winter-grade diesel
Summer fuel becomes thicker in winter and it
is more difficult to start the engine. For this
reason, petrol stations in some countries al-
so offer winter diesel with improved fluidity
when cold (winter-grade diesel).
Water in the fuel filter 1)
If your vehicle has a diesel engine and is
equipped with a fuel filter with a water sepa-
rator, the instrument panel may display the
following warning:  Water in the
fuel filter. If this is the case, take the
vehicle to a specialised workshop so that
they can drain the fuel filter. CAUTION
● The v ehic

le is not designed for the use of
FAME fuel (biodiesel). The fuel system would
be damaged if you used biodiesel.
● Do not mix fuel additives, the so-called
“thinners”, petro
l or similar additives with
diesel fuel.
● If poor-quality diesel fuel is used, it may be
neces
sary to drain the fuel filter more fre-
quently than is specified in the Maintenance
Programme. We recommend having this done 1)
Valid for the market: Algeria.
244

Index
Multi-collision Brake . . . . . . . . . . . . . . . . . . . . . . 179
M u
ltimedi
a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
N Natural gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 Fuel tank cap . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
LNG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
refuelling . . . . . . . . . . . . . . . . . . . . . . . . . 242, 245
smell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
special features . . . . . . . . . . . . . . . . . . . . . . . . 242
Natural leather cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Navigation system CD-ROM player . . . . . . . . . . . . . . . . . . . . . . . . . 146
Net bag luggage compartment . . . . . . . . . . . . . . . . . . . 155
Net partition . . . . . . . . . . . . . . . . . . . . . . . . 151, 152
Noises Adaptive cruise control . . . . . . . . . . . . . . . . . . 188
brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
ESC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
refuelling natural gas . . . . . . . . . . . . . . . . . . . . 243
tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60, 255
Number of seats . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
O
Octane rating (petrol) . . . . . . . . . . . . . . . . . . . . . . 243
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 partial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Reset button . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Oil change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Oil properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
On-screen messages front assist monitoring system . . . . . . . . . . . . 198
One-touch opening and closing Electric windows . . . . . . . . . . . . . . . . . . . . . . . . 126 Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
fuel
tank flap . . . . . . . . . . . . . . . . . . . . . . 241, 242
Panoramic sliding sunroof . . . . . . . . . . . . . . . . 126
windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Opening and closing . . . . . . . . . . . . . . . . . . 11, 116 bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
by remote control . . . . . . . . . . . . . . . . . . . . . . . 118
fuel tank flap . . . . . . . . . . . . . . . . . . . . . . 241, 242
in the door cylinder . . . . . . . . . . . . . . . . . . . . . . 11
Panoramic sliding sunroof . . . . . . . . . . . . . . . . 126
rear lid of the luggage compartment . . . . . . . . 12
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
with the central locking switch . . . . . . . . . . . . 119
Opening manually rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Outside temperature . . . . . . . . . . . . . . . . . . . . . . . 33
P Paint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233 care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Paintwork code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Panoramic sliding sunroof closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
convenience closing . . . . . . . . . . . . . . . . . . . . . 127
convenience opening . . . . . . . . . . . . . . . . . . . . 127
convenience opening and closing . . . . . . . . . 125
fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
roll-back function . . . . . . . . . . . . . . . . . . . . . . . 127
Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166, 171
Parking aid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211 adjusting the display and audible warnings . 216
automatic activation . . . . . . . . . . . . . . . . . . . . 215
fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216 Parking system plus . . . . . . . . . . . . . . . . . . . . . 213
rear p
arking aid . . . . . . . . . . . . . . . . . . . . . . . . 213
sensors and camera: cleaning . . . . . . . . . . . . . 233
surroundings warning . . . . . . . . . . . . . . . . . . . 213
towing bracket . . . . . . . . . . . . . . . . . . . . . . . . . 216
visual indication . . . . . . . . . . . . . . . . . . . . . . . . 215
Parking aid system see Parking aid . . . . . . . . . . . . . . . . . . . . . . . . . 211
Parking distance warning system see Parking aid . . . . . . . . . . . . . . . . . . . . . . . . . 211
Parking (automatic gearbox) . . . . . . . . . . . . . . . . 171
ParkPilot see Parking aid . . . . . . . . . . . . . . . . . . . . . . . . . 211
Particulate filter (Diesel) . . . . . . . . . . . . . . . . . . . 176
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Passenger see Correct sitting position . . . . . . . . . 67, 68, 69
Passenger door manual locking . . . . . . . . . . . . . . 12
Passenger seat backrest folding down . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
lifting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Pedals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Petrol additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Plastic parts: cleaning . . . . . . . . . . . . . . . . 233, 235
Polishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Positioning seat belts during pregnancy . . . . . . . . . . . . . . . . . . . . . . . . 76
seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Power Management . . . . . . . . . . . . . . . . . . . . . . . 239
Power socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Power steering see Electromechanical steering . . . . . . . . . . . . 238
Pre-heating system control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
299