engine Seat Leon 2020 Service Manual

Checking and refilling levels
Brake fluid Check and r efill the br
ake fluidFig. 229
Engine compartment: brake fluid res-
erv oir cap

. The brake fluid reservoir is located in the en-
gine compartment
››

› page 331
.
Checking the brake fluid level
The brake fluid level must be between the 
and  markings.
However, if the brake fluid level goes down
noticeably in a short time, or drops below the mark, there may be a leak in the brake system. Seek specialist assistance. A warning
light on the instrument panel display monitors
the brake fluid level ››› page 89
.
In right-hand drive vehicles the brake fluid
reservoir is on the other side of the engine
compartment. Changing brake fluid
We r

ecommend that you have the brake fluid
changed by a Technical Service. WARNING
If the brake fluid level is low or unsuita-
bl e/ol

d brake fluid is used, the brake sys-
tem may fail or braking power may be re-
duced.

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

Technical data
Technical data
Indications about the
t echnical dat
a
Important information Introduction The values indicated in the technical data
may diff
er depending on optional equipment
or v

ersion of the model, as well as in the case
of special vehicles and equipment for certain
countries.
The information in the official vehicle docu-
mentation takes precedence at all times.
Abbreviations used in the Technical Speci-
fications section kW Kilowatt, engine power measurement.
PS Pferdest

Technical data
Engine specifications Petrol engines
1.0 EcoTSI Start-Stop
1.0 EcoTSI Start-Stop 1.0 EcoTSI Start-Stop MHEV
Leon Leon Sportstourer LeonLeon Leon Sportstourer
Power output in kW (PS) at 1/min 66 (90)/5,50081 (110)/5,500 81 (110)/5,500
Maximum torque (Nm at 1/min) 175/1,600-3,000200/2,000-3,000 200/2,000-3,000
No. of cylinders/displacement
(cm 3
) 3/999
3/999 3/999
Fuel Super 95 / Normal 91 (with a slight power loss) ROZ
Gearbox manualmanual manualDSGDSG
Top speed (km/h) 183 (IV)184 (IV) 197 (V)194 (VI) a)
Acceleration from 0-100 km/h (sec-
onds) 12. 7
13.1 10.910.6 a)
Maximum authorised weight (kg) 1, 7501, 750 1, 7501,8601,950a)
Data not available as this edition goes to print.
374

Indications about the technical data
Petrol engines
1.4 TSI Start-Stop PHEV
1.4 TSI + HEM80evo (PHEV) HEM80evo (E-Mode in PHEV)
Leon Leon Sportstourer Leon Leon Sportstourer Leon Leon Sportstourer
Power output in kW (PS) at 1/min 110 (150)/5,000-6,000150 (201)/5,000-6,000 85 (116)/2,600-6,500
Maximum torque (Nm at 1/min) 250/1,550-3,500350/0-3,500330/0-2,600
No. of cylinders/displacement
(cm 3
) 4/1,395
4/1,395

Technical data
Petrol engines
1.5 Start-Stop ACT

Indications about the technical data
Diesel engines
2.0 TDI Start-Stop
2.0 TDI CR 2.0
Leon Leon LEON Sportstourer
Power output in kW (PS) at 1/min 85 (115)/2, 750-4,250 105 (143)/3,500-4,000105 (143)/3,500-4,000
Maximum torque (Nm at 1/min) 300/1,500-2,500320/1, 750-3,000 320/1, 750-3,000
No. of cylinders/displacement
(cm 3
) 4/1,968
4/1,968 4/1,968
Fuel Diesel according to standard EN 590, min. 51 CN
Gearbox manualmanualDSGmanual DSG
Top speed (km/h) 201 (V/VI)a)
a) a) a)
Acceleration from 0-100 km/h (sec-
onds) 10.4
a)
a) a) a)
Maximum authorised weight (kg) 1,950a)
a) a) a)a)
Data not available as this edition goes to print. »
377

Technical data
Diesel engines
2.0 TDI CR Start-Stop
2.0 TDI Start-Stop
Leon LEON Sportstourer LeonLEON Sportstourer
Power output in kW (PS) at 1/min 110 (150)/3,000-4,200110 (150)/3,000-4,200
Maximum torque (Nm at 1/min) 340/1, 700-2, 750360/1, 700-2, 750
No. of cylinders/displacement (cm 3
) 4/1,968 4/1,968
Fuel Diesel according to standard EN 590, min. 51 CN
Gearbox manualmanual DSGDSG
Top speed (km/h) a)
a)
218 (VII) 218 (VII)
Acceleration from 0-100 km/h (seconds) a)
a)
8.6 8.9
Maximum authorised weight (kg) a)
a)
1,980 2,080a)
Data not available as this edition goes to print. 378

Index
Braking system warning l
amp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
C Camera cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Care see Cleaning the vehicle . . . . . . . . . . . . . . . . . 360
Catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . . 327
Central armrests . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Central locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 anti-theft alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
central locking switch . . . . . . . . . . . . . . . . . . . . . 103
emergency lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
remote control key . . . . . . . . . . . . . . . . . . . . . . . . 102
selective unlocking system . . . . . . . . . . . . . . . . 102
settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
unlock and lock the vehicle (Keyless Ac- cess) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Cetane index (diesel fuel) . . . . . . . . . . . . . . . . . . . 324
Change a bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Change the wiper blades . . . . . . . . . . . . . . . . . . . . 53
Changing a wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
subsequent work . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
wheel nuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Changing parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365
Charging cable for charging stations (AC) . . . . . . . . . . . . . . . . . 318
for sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Charging socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Charging the high-voltage battery charging cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
charging modes . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
charging process display . . . . . . . . . . . . . . . . . . 315
charging socket . . . . . . . . . . . . . . . . . . . . . . . . . . . 313 emergency unlocking . . . . . . . . . . . . . . . . . . . . . 316
progr
ammed charging . . . . . . . . . . . . . . . . . . . . . 311
settings in the infotainment system . . . . . . . . . 311
troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
Checking levels engine compartment . . . . . . . . . . . . . . . . . . . . . . 331
Check lists requirements for Android Auto™ . . . . . . . . . . . . 191
requirements for Apple CarPlay . . . . . . . . . . . 190
requirements for MirrorLink® . . . . . . . . . . . . . . . 192
reverse assist (Rear View) . . . . . . . . . . . . . . . . . 296
Childproof locks electric windows . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Child seats group classification . . . . . . . . . . . . . . . . . . . . . . . . 34
ISOFIX system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . 35
securing with the seat belt . . . . . . . . . . . . . . . . . 42
Top Tether system . . . . . . . . . . . . . . . . . . . 38, 40, 41
Cleaning the vehicle high pressure cleaning equipment . . . . . . . . 360
special care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
vehicle exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
vehicle interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 362
wash the vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . 360
Climate control auxiliary heating . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Clocks set the time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
panoramic roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Clutch (lamp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234 Coming Home . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
124
Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183 WLAN access point . . . . . . . . . . . . . . . . . . . . . . . . 193
Connectivit
y Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Connectors faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Control and warning lamps . . . . . . . . . . . . . . . . . . 89 adaptive cruise control . . . . . . . . . . . . . . . . . . . 254
adBlue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
alternator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
anti-lock brake system ABS . . . . . . . . . . . . . . . 278
audible warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
braking system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
cruise control (GRA) . . . . . . . . . . . . . . . . . . . . . . . 245
diesel preheating system . . . . . . . . . . . . . . . . . 326
EDL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
electric drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
electromechanical steering . . . . . . . . . . . . . . . 236
electronic parking brake . . . . . . . . . . . . . . . . . . 273
Emergency Assist . . . . . . . . . . . . . . . . . . . . . . . . . 266
emissions control . . . . . . . . . . . . . . . . . . . . . . . . . 326
engine coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
engine management . . . . . . . . . . . . . . . . . . . . . . 326
engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
ESC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278, 281
fuel reserve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
gear change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Lane Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
lane departure warning (Side Assist) . . . . . . 268
lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
particulate filter . . . . . . . . . . . . . . . . . . . . . . 326, 327
press on the brake . . . . . . . . . . . . . . . . . . . . . . . . 253
383