alternator Seat Leon 2018 Owner's manual

Start and driving
Since the luggage rack increases the aer o-
dynamic dr ag
of the vehicle, you should re-
move it when not needed. At speeds of
100-120 km/h (62-75 mph), this will save 12%
of fuel.
Save electrical energy
The engine drives the alternator, thereby
generating electricity. This implies that any
increase in power consumption also increa-
ses fuel consumption! For this reason, switch
off any unneeded electrical devices. Devices
that use a lot of electricity includes the blow-
er at a high setting, the rear window heating
or the seat heating*.
Power management
This system helps to ensur
e relia-
ble starting The power management controls the distri-
bution of el
ectrical ener
gy and thus helps t

o
ensure that there is always enough power
available to start the engine.
If a vehicle with a conventional electrical sys-
tem is left parked for a long time, the battery
will gradually lose its charge because certain
electrical devices, such as the electronic
gearbox lock continues to draw current even
when the ignition is off. In some cases there may not be enough power available to start
the engine.
Your v

ehicle is equipped with an intelligent
power management system to control the
distribution of electrical energy. This signifi-
cantly improves reliability when starting the
engine, and also prolongs the useful life of the
battery.
The main functions incorporated in the power
management system are battery diagnosis,
residual current management and dynam-
ic power management.
Battery diagnosis
The battery diagnosis function constantly
registers the condition of the battery. Sensors
detect the battery voltage, battery current
and battery temperature. This enables the
system to calculate the current power level
and charge condition of the battery.
Residual current management
The residual current management reduces
power consumption while the vehicle is
parked. It controls the supply of power to the
various electrical devices while the ignition is
switched off. The system takes the battery di-
agnosis data into consideration.
Depending on the power level of the battery,
switch off the individual electrical devices
one after the other to prevent the battery from losing too much charge and to ensure
that the engine can be started r
eliably.
Dynamic power management
While the vehicle is moving, this function dis-
tributes the available power to the various
electrical devices and systems according to
their requirements. The power management
ensures that on-board systems do not con-
sume more electrical power than the alterna-
tor can supply, and thus maintains the maxi-
mum possible battery power level. Note

Driving
running. In this case power is consumed when
none is being gener at
ed.
In these sit
uations you will be aware that the
power management system is intervening to
control the distribution of electrical power.
When the vehicle is parked for long peri-
ods
If you do not drive your vehicle for a period of
several days or weeks, the power manage-
ment will gradually shut off the electrical de-
vices one by one or reduce the amount of
current they are using. This limits the amount
of power consumed and helps to ensure reli-
able starting even after a long period. Some
convenience functions, such as remote vehi-
cle opening, may not be available under cer-
tain circumstances. These functions will be
restored when you switch on the ignition and
start the engine.
With the engine switched off
For example, if you listen to the sound system
with the engine switched off the battery will
run down.
If the energy consumption means there is a
risk that the engine will not start, a text will
appear in vehicles with a driver information
system*.
This driver indicator tells you that you must
start the engine so that the battery can re-
charge. When the engine is running
Although the alternator gener
ates electrical
power, the battery can still become dis-
charged while the vehicle is being driven. This
can occur when a lot of power is being con-
sumed but only a small amount supplied, es-
pecially if the battery is not fully charged ini-
tially.
To restore the necessary energy balance, the
system will then temporarily shut off the elec-
trical devices that are using a lot of power, or
reduce the current they are consuming. Heat-
ing systems in particular use a large amount
of electrical power. If you notice, for instance,
that the seat heating* or the rear window
heater is not working, they may have been
temporarily switched off or regulated to a
lower heat output. These systems will be
available again as soon as sufficient electri-
cal power is available.
You may also notice that the engine runs at a
slightly faster idling speed when necessary.
This is quite normal, and no cause for con-
cern. The increased idling speed allows the
alternator to meet the greater power require-
ment and charge the battery at the same
time. Engine management and
emission control system
Intr
oduction WARNING

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