2020 Seat Leon ignition

Practical tips
Energy management Optimisation of the st ar
ting ca-
pacity The power management controls the distri-
bution of el
ectrical ener

gy and thus helps to
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 vehicle 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 batt
ery t

emperature. 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 reliably.
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

Wheels
convenience functions, such as remote vehi-
cl e opening, may not be av
ailable 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 generates 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 w
orking, 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. Wheels
Wheel s and t
yres
General notes

Index
Electronic parking brake . . . . . . . . . . . . . . . . . . . . . 275 aut omatic connection . . . . . . . . . . . . . . . . . . . . .
276
automatic disconnection . . . . . . . . . . . . . . . . . . 276
connecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
disconnecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
emergency brake function . . . . . . . . . . . . . . . . 276
lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Electronic self-locking . . . . . . . . . . . . . . . . . . . . . . . 279
Electronic Stability Control (ESC) . . . . . . . . . . . 279
Emergencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 anti-puncture kit . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
changing a wheel . . . . . . . . . . . . . . . . . . . . . . . . . . 48
changing the battery . . . . . . . . . . . . . . . . . . . . . . 341
emergency vehicle towing . . . . . . . . . . . . . . . . . . 57
hazard warning lights . . . . . . . . . . . . . . . . . . . . . . 125
jump leads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
replace a blown fuse . . . . . . . . . . . . . . . . . . . . . . . 62
vehicle tool kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Emergency Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . 265 connecting and disconnecting . . . . . . . . . . . . 266
troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
see also Emergency Assist . . . . . . . . . . . . . . . . 265
Emergency brake function . . . . . . . . . . . . . . . . . . 276
Emergency braking assist system . . . . . . . . . . . 242 activating and deactivating . . . . . . . . . . . . . . . 252
dodge assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
pedestrian and cyclist recognition . . . . . . . . 250
status display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
system limitations . . . . . . . . . . . . . . . . . . . . . . . . . 251
temporarily deactivating . . . . . . . . . . . . . . . . . . 253
turn assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Emergency braking warning . . . . . . . . . . . . . . . . . 126
Emergency call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Emergency call service . . . . . . . . . . . . . . . . . . . . . . 44
Emergency l
ocking of the front passenger
door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Emergency opening driver's door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Emergency operation front passenger door . . . . . . . . . . . . . . . . . . . . . . . 111
Emissions control system AdBlue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . 327
control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
particulate filter . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
Energy management . . . . . . . . . . . . . . . . . . . . . . . 344
Engine assisted start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
noises . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
running in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Start-Stop system . . . . . . . . . . . . . . . . . . . . . . . . . 224
start (driver instructions with the mechani- cal contact) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Engine and ignition automatic ignition disconnection . . . . . . . . . . 218
emergency start . . . . . . . . . . . . . . . . . . . . . . . . . . 222
My Beat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
preheat the engine . . . . . . . . . . . . . . . . . . . . . . . . 220
starting the engine . . . . . . . . . . . . . . . . . . . . . . . . 220
starting the engine with Press & Drive . . . . . 220
switching off the engine . . . . . . . . . . . . . . . . . . . 221
Engine compartment . . . . . . . . . . . . . . . . . . . 328, 331 battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334, 336
engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
opening and closing . . . . . . . . . . . . . . . . . . . . . . 329 safety instructions . . . . . . . . . . . . . . . . . . . . . . . . 328
window w
asher tank . . . . . . . . . . . . . . . . . . . . . . 337
Engine coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334 check the level . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
G12evo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
G12 plus-plus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
G13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
temperature indicator . . . . . . . . . . . . . . . . . . . . . . 84
warning lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Engine failure control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Engine management . . . . . . . . . . . . . . . . . . . . . . . . 326
control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Engine oil change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331, 334
checking the oil level . . . . . . . . . . . . . . . . . . . . . . 333
consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
dipstick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
inspection service . . . . . . . . . . . . . . . . . . . . . . . . . 331
maintenance frequencies . . . . . . . . . . . . . . . . . 331
refill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Engine oil pressure control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
Engine specifications . . . . . . . . . . . . . . . . . . . . . . . . 374
Environment ecological driving . . . . . . . . . . . . . . . . . . . . . . . . . 239
environmental compatibility . . . . . . . . . . . . . . 367
refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321
Environmental tip refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321
385