differential Seat Leon 2020 Owner's manual

Emergencies
No. Consumers/Amps
16 PHEV, Automatic gearbox unit 5017 PTC 40
18 PTC 40
20 Front electronic differential 15 21 Engine control unit 7.5
22 Starter motor 30
23 Engine control unit (diesel/pet-
r
ol) 15
2
4 Engine sensors 7.5/10
25 Engine sensors 7.5/10
26 Engine power supply 7.5/10
27 Lambda probe 10/15
28 Engine 10/20
29 Fuel pump control unit 15/20/30
30 Pressure pump 1.0 10
33 PTC 40Note

Driver assistance systems
Lane departure warning (Side As-
sist) The lane departure warning uses radar sen-
sors t
o monit
or the areas behind the vehicle
››› page 9. The system does this by measur-
ing the vehicle's distance from other vehicles
and its speed differential. The lane departure
warning will not work at speeds of less than
approx. 15 km/h (9 mph).
The lane width is not detected individually,
but is rather pre-configured in the system.
Thus if you are driving in wide lanes or in be-
tween two lanes, the indications may be in-
correct. Furthermore, the system can detect
vehicles driving in the lane next to you (if
there are any), and can also detect station-
ary objects such as dividers, and thus give an
incorrect indication.
Light indication
The control lamp provides an indication on
the corresponding side regarding the traffic
situation behind the vehicle, if it is deemed to
be critical. The control lamp of the left-hand
side ››› Fig. 188
indicates the traffic situation
to the rear left of the vehicle, and the control
lamp of the right-hand side ››› Fig. 189
, indi-
cates the traffic situation to the rear right of
the vehicle. Keep the warning lamps zone of the lane de-
part
ur

e warning free of objects, adhesives or
the likes that may interfere with your visibility.
Lane assist Plus. The Lane Assist Plus function can be used by
activ
ating the

Lane Assist ››› page 261
and
Side Assist functions. In this case its functions
are expanded as described below.
If the driver initiates a lane change manoeu-
vre in a potential critical situation:

Braking and parking
Brake assist systems Electronic Stability Control (ESC)
The ESC helps t
o impr
ove safety. It reduces
the tendency to skid and improves the stabili-
ty and roadholding of the vehicle. The ESC
detects critical handling situations, such as
vehicle understeer or oversteer, or wheelspin
on the driving wheels. It stabilises the vehicle
by braking individual wheels or by reducing
the engine torque. The warning lamp will
flash on the instrument panel when the ESC is
intervening !.
The ESC includes the anti-lock brake system
(ABS), the hydraulic brake assist (HBA), the
traction control system (TCS), electronic dif-
ferential lock (EDS), electronic torque control
(XDS) and the tractor-trailer sway mitiga-
tion*.
ESC also helps stabilise the vehicle by
changing the torque.
The TCS can be deactivated when wheel
spin is desirable ››› page 281
.
Anti-lock brake system (ABS)
ABS prevents the wheels from locking up un-
der braking until the vehicle has reached a
virtual standstill. You can continue to steer the
vehicle even when the brakes are on full.
Keep your foot on the brake pedal and do not
pump the brakes. You will feel the brake pedal
pulsate while the ABS is working. If the running gear or brake system is modi-
fied, the eff
ectiv

eness of the ABS could be se-
verely limited.
Hydraulic Brake Assist (HBA)
The brake assist system can reduce the re-
quired braking distance. The braking force is
automatically boosted if you press the brake
pedal quickly in an emergency. You must
keep pressing the brake pedal until the dan-
ger has passed.
Traction control (TCS)
In the event of the wheels spinning, the TCS
reduces the engine torque to adapt to the
road condition. This helps the car to start
moving, accelerate or climb a gradient.
Electronic differential lock (EDL)
When the EDL detects wheelspin, it brakes
the spinning wheel and directs the power to
the other driven wheel. This function is active
up to approximately 100 km/h (62 mph).
To prevent the disc brake of the braked wheel
from overheating, the EDL cuts out automati-
cally if subjected to excessive loads. The ve-
hicle can still be driven. The EDL will switch on
again automatically when the brake has
cooled down. Tractor-trailer sway mitigation*
If the vehicl
e is pulling a trailer, it will control
the following: tractor-trailers tend to sway.
When the swaying of the trailer is felt by the
vehicle and detected by the ESC, it will auto-
matically brake the towing vehicle within the
limits of the system and mitigate the sway.
Tractor-trailer sway mitigation is not available
in all countries ››› page 303
.
Electronic engine torque management
(XDS)
When taking a curve, the driveshaft differen-
tial allows the outer wheel to turn at a higher
speed than the inner wheel. In this way, the
wheel that is turning faster (outer wheel) re-
ceives less drive torque than the inner wheel.
This may mean that in certain situations the
torque delivered to the inner wheel is too
high, causing the wheels to spin. On the other
hand, the outer wheel is receiving a lower
drive torque than it could transmit. This can
cause a loss of grip on the drive axle, in this
case the front axle, which results in under-
steer or “lengthening” of the trajectory.
The XDS can detect and correct this effect
via the sensors and signals of the ESC.
Via the ESC, the XDS will brake the inside
wheel and counter the excess driving torque
of that wheel. This means that the requested
trajectory is much more precise. »
279

Index
rear cross traffic alert (RCTA) . . . . . . . . . . . . . 268
r efuelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
84, 32
1
remote control (independent heating) . . . . . 167
replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
seat belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Start-Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
steering column lock . . . . . . . . . . . . . . . . . . . . . . 236
TCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278, 281
tow hook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Travel Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Tyre pressure monitor system . . . . . . . . . . . . . 352
Controls and displays overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Controls on the steering wheel . . . . . . . . . . . . . . . 97
Convenience close function windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Convenience open function windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Cooling system check the coolant . . . . . . . . . . . . . . . . . . . . . . . . 336
refilling coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Copyright . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Correct sitting position . . . . . . . . . . . . . . . . . . . . . . . . 15 driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Cruise control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Current documentation attached . . . . . . . . . . . . 172
D Dangers of not using the seat belt . . . . . . . . . . . . 20
Data label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 372
Data transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Deactivating SEAT CONNECT services . . . . . . 188 Deactivation of cylinders
see Active cylinder management (AC T) . . . . 72
Deactivation of the front airbag . . . . . . . . . . . . . . 29
Diesel engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
particulate filter . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Disposal seat belt tensioners . . . . . . . . . . . . . . . . . . . . . . . . 23
Distance control see Adaptive Cruise Control . . . . . . . . . . . . . . 253
Door cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Door handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Door lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Door opening warning (Exit Assist) . . . . . . . . . . . 271
Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
child lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Downhill assistance function . . . . . . . . . . . . . . . . 233
Downhill assistant . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Drawers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Drink holder bottle holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
in the rear central armrest . . . . . . . . . . . . . . . . . 154
Driver see Correct sitting position . . . . . . . . . . . . . . . . . 15
Driver alert system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Driving driving on flooded roads . . . . . . . . . . . . . . . . . . 240
economical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
parking on inclines . . . . . . . . . . . . . . . . . . . . . . . . 282
park on upward slopes . . . . . . . . . . . . . . . . . . . . 282
safe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
trips abroad . . . . . . . . . . . . . . . . . . . . . . . . . . 126, 240
with trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303 Driving Assist (Travel Assist) . . . . . . . . . . . . . . . . . 263
operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
st
atus display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Driving data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Driving data indicator . . . . . . . . . . . . . . . . . . . . . . . . 75
Driving mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Driving on flooded roads . . . . . . . . . . . . . . . . . . . . 240
Driving profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
DSG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
Duplicate keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Dust and pollen filter . . . . . . . . . . . . . . . . . . . . . . . . . 157
Dynamic headlight range control . . . . . . . . . . . . 126
E e-Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
E-Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
E10 see Ethanol (fuel) . . . . . . . . . . . . . . . . . . . . . . . . . 323
Easy Open special characteristics . . . . . . . . . . . . . . . . . . . . . 114
Eco-driving notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
EDL see Electronic differential lock . . . . . . . . . . . . 279
Electric windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Electrical accessories see Power sockets . . . . . . . . . . . . . . . . . . . . . . . . . 155
Electric windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Electrolyte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
Electronic differential lock . . . . . . . . . . . . . . . . . . . 279
Electronic engine torque management (XDS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279
Electronic immobilizer . . . . . . . . . . . . . . . . . . . 110, 221
384