lights Seat Leon 2018 Owner's Guide

Lights and visibility

Driving
Control lamps 
It lights up red
Brake fluid level too low

Start and driving
Braking and stability sys-
t ems
Contr ol l
amps 
It lights up
Fault in the ESC or disconnection caused by the sys-
tem.
As the ESC operat

es in conjunction with the ABS, the
ESC light will also come on if a fault should occur in
the ABS. 
Flashes
ESC or ASR activated. 
It lights up
ASR manually deactivated.
Or: ESC in Sport mode

Driving
Foresight when driving
Accel er
ation causes the v
ehicle to consume
more fuel. If you think ahead when driving,
you will need to brake less and thus acceler-
ate less. Wherever possible, let the car roll
slowly to a stop, with a gear engaged (for in-
stance when you can see that the next traffic
lights are red). This takes advantage of the
engine braking effect, reducing wear on the
brakes and tyres. Emissions and fuel con-
sumption will drop to zero due to the overrun
fuel cut-off.
Changing gear to save energy
An effective way of saving is to change in ad-
vance to a higher gear. Running the engine at
high rpm in the lower gears uses an unneces-
sary amount of fuel.
Manual transmission: shift up from first to
second gear as soon as possible. In any case,
we recommend that you change to a higher
gear upon reaching 2,000 rpm. Choosing the
right gear enables fuel savings. Select the
highest possible gear appropriate for the
driving situation (the engine should continue
functioning with cyclical regularity).
Automatic transmission: accelerate gradu-
ally and without reaching the “kick-down”
position. Avoid driving at high speed
Avoid trav
elling at top speed, whenever pos-
sible. Fuel consumption, emission of harmful
gases and noise pollution multiply dispropor-
tionately as speed is increased. Driving at
moderate speeds will help to save fuel.
Reduce idling time
In vehicles with the Start-Stop system idling is
automatically reduced. In vehicles without
the Start-Stop system it is worth switching off
the engine, for example, at level crossings
and at traffic lights that remain red for long
periods of time. When an engine has reached
operating temperature, and depending on
the cylinder capacity, keeping it switched off
for a minimum of about 5 seconds already
saves more than the amount of fuel necessa-
ry for restarting.
The engine takes a long time to warm up
when it is idling. Mechanical wear and pollu-
tant emissions are also especially high during
this initial warm-up phase. It is therefore best
to drive off immediately after starting the en-
gine. Avoid running the engine at high speed.
Regular maintenance
Regular servicing helps in saving fuel even
before the engine is started. A well-serviced
engine gives you the benefit of improved fuel
efficiency as well as maximum reliability and
an enhanced resale value. A badly serviced engine can consume up to 10% more fuel
than necessary.
Avoid short journeys
The engine and cat
alytic converter need to
reach their optimal operating temperature
in order to minimise fuel consumption and
emissions.
A cold engine consumes a disproportionate
amount of fuel. The engine reaches its work-
ing temperature after about four kilometres
(2.5 miles), when fuel consumption will return
to a normal level.
Check tyre pressure
Always make sure the tyres are inflated to the
correct pressures

Start and driving

It lights up
Particulate filter blocked

Driver assistance systems
to the presence of metallic objects (e.g. rails
on the r oad or sheets used in r
oad w
orks).
The area in front of and around the radar
sensor should not be covered with adhesives,
additional or similar headlights, as this may
negatively affect Front Assist operation.
If the front of the vehicle is not properly re-
paired or structural modifications are made
to it, for example if the suspension is lowered,
Front Assist operation may be affected. SEAT
recommends visiting a SEAT dealership for
this purpose. CAUTION
If you have the sensation that the radar
sensor is damaged or has lost its settings, disconnect the Fr ont Assist. This will av

oid
possible dangerous situations caused by a
system malfunction. If this occurs have it
adjusted.

Driving
Lane Assist system* Intr oduction Fig. 277
On the windscreen: field of vision of
the L ane Assist syst
em camer
a.Using the camera located in the windscreen,
the L
ane Assist syst
em det

ects the possible
lines dividing the lanes. When the vehicle in-
voluntarily approaches a dividing line it has
detected, the system notifies the driver with a
corrective steering movement. The purpose is
not only to warn the driver, but also to keep
the vehicle inside the lane. This movement
can be over-regulated at any time.
No warning is produced with the turn signals
activated, given that the Lane Assist system
understands that a lane change is required. Control lamp "
It lights up yellow
Lane Assist active but not available.
The system cannot accurat
ely recognise the lane.
Please see page 286, Lane Assist system is not avail-
able (the control lamp is lit up yellow). "
It lights up green
Lane Assist system active and available. Some control and warning lamps will light up
briefly when the ignition is s
wit
ched on t

o
check certain functions. They will switch off
after a few seconds. WARNING
Observe the safety warnings

Vehicle maintenance
Problem Solution
Care Apply preservative cream regu-
larly to pr
otect from sunlight.
Use a colour preservative if re-
quired a)
Neutral soap solution: two tablespoons maximum in
1 litre of w at

er
Carbon fibre parts Problem Solution
Dirt Clean like plastic partsTake special care with...
Headlights/tail lights

Index
Index
A ACC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . 275
r adar sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
277
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163, 313
Active cylinder management (ACT) status indication . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Adaptive Cruise Control . . . . . . . . . . . . . . . . . . . . . 275 control and warning lamps . . . . . . . . . . . . . . . . 276
deactivating temporarily . . . . . . . . . . . . . . . . . . 281
function for preventing overtaking in an in-side lane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
instructions on the screen . . . . . . . . . . . . . . . . . 277
malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. 276
operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
radar sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
special driving situations . . . . . . . . . . . . . . . . . . 282
AdBlue information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
maximum filling capacity . . . . . . . . . . . . . . . . . 320
refilling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . 320
specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. 320
tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Adjust Vehicle menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Adjusting front head restraints . . . . . . . . . . . . . . . . . . . . . . . . 67
front seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . 156
lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . 149
rear head restraints . . . . . . . . . . . . . . . . . . . . . . . 156
seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . 64
Adjusting the head restraints front head restraints . . . . . . . . . . . . . . . . . . . . . . . 156 Adjustment
front head restr aints . . . . . . . . . . . . . . . . . . . . . . . 156
rear head restraints . . . . . . . . . . . . . . . . . . . . . . . . 68
Airbag covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . 74
Airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22, 74 activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. 76
control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
deactivation of front airbag . . . . . . . . . . . . . . . . 78
description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 75
front airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22, 76
functioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 76
head-protection airbags . . . . . . . . . . . . . . . . 25, 78
knee airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24, 77
side airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24, 77
Air conditioning Climatronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42, 177
manual air conditioning . . . . . . . . . . . . . . . . . . . . 45
user instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Air outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. 180
Air recirculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Alcantara leather: cleaning . . . . . . . . . . . . . . . . . 348
Alternator warning lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
AM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . 201
Anchoring the front tow line. . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Android Auto

Index
Child seats cat egorisation int
o gr
oups . . . . . . . . . . . . . . . . . 82
ISOFIX system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
safety instructions . . . . . . . . . . . . . . . . . . . . . . 25, 80
securing with the seat belt . . . . . . . . . . . . . . . . . . 27
Top Tether system . . . . . . . . . . . . . . . . . . . . . . . 29, 31
Cleaning Alcantara leather . . . . . . . . . . . . . . . . . . . . . . . . . 348
carbon fibre . . . . . . . . . . . . . . . . . . . . . . . . . 347, 349
control panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
decorative sheets . . . . . . . . . . . . . . . . . . . . . . . . . 348
exhaust tail pipes . . . . . . . . . . . . . . . . . . . . . . . . . 347
exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 347
fabrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . 348
headlights / tail lights . . . . . . . . . . . . . . . . . . . . . 347
high pressure cleaners . . . . . . . . . . . . . . . . . . . . 345
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 348
leather . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . 348
paint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . 347
plastic parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . 348
sensors/camera lenses . . . . . . . . . . . . . . . . . . . 347
special care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
the radio screen . . . . . . . . . . . . . . . . . . . . . . . . . . 348
trims/covers . . . . . . . . . . . . . . . . . . . . . . . . . 347, 348
washing the vehicle . . . . . . . . . . . . . . . . . . . . . . . 345
wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. 347
windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
windscreen wipers . . . . . . . . . . . . . . . . . . . . . . . . 347
Climatronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
43
Clocks analogue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
114
digital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . 114
set time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . 114
Close . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . 127 Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . 127
bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . 323
panoramic sliding sunr
oof . . . . . . . . . . . . . . . . . 140
windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
138
Clutch (warning lamp) . . . . . . . . . . . . . . . . . . . . . . 256
Coming Home . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. 146
Communication between the Infotainment system and mobile devices . . . . . . . . . . . . . . . . 191
Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191 Full Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . 191
SEAT Media Control . . . . . . . . . . . . . . . . . . . . . . . 198
WLAN point of access . . . . . . . . . . . . . . . . . . . . . 199
Connectivity Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Control and warning lamps . . . . . . . . . . . . . . 39, 123 ABS anti-blocking system . . . . . . . . . . . . . . . . . 245
adaptive cruise control . . . . . . . . . . . . . . . . . . . . 276
airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . 78
airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
alternator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
applying the brake . . . . . . . . . . . . . . . . . . . . . . . . 276
ASR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245, 247
audible warning signal . . . . . . . . . . . . . . . . . . . . 123
blocking of the steering column . . . . . . . . . . . 258
brake systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
cruise control system (CCS) . . . . . . . . . . . . . . 269
depress the brake . . . . . . . . . . . . . . . . . . . . . . . . . 271
diesel preheating system . . . . . . . . . . . . . . . . . 262
EDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . 245
electromechanical steering . . . . . . . . . . . . . . . 258
emission control . . . . . . . . . . . . . . . . . . . . . . . . . . 262
engine management . . . . . . . . . . . . . . . . . . . . . . 262
engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . 325
ESC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245, 247
gear change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
handbrake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242 instrument panel . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Lane Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. 284
lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . .
143
particulate filter . . . . . . . . . . . . . . . . . . . . . . 262, 263
refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 314
seat belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . 69
Start-Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
tyre monitoring system . . . . . . . . . . . . . . . . . . . . 337
Control lamps engine coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Fuel reserve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
refuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . 117
Controls and displays general instrument panel . . . . . . . . . . . . . . . . . . 101
Controls for the windows . . . . . . . . . . . . . . . . . 18, 138
Controls on the steering wheel . . . . . . . . . . . . . . 124
Convenience closing panoramic sliding sunroof . . . . . . . . . . . . . . . . . 141
Convenience opening panoramic sliding sunroof . . . . . . . . . . . . . . . . . 141
Coolant checking level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
Cooling system checking coolant . . . . . . . . . . . . . . . . . . . . . . . . . 327
topping up coolant . . . . . . . . . . . . . . . . . . . . . . . . 327
Copyright . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . 203
Correct position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
64
Correct sitting position driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . 64
front passenger . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
rear seat passengers . . . . . . . . . . . . . . . . . . . . . . 66
Cruise control . . . . . . . . . . . . . . . . . . . . . . . . . . . 40, 269 control and warning lamps . . . . . . . . . . . . . . . 269
operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
373