2020 Seat Leon trailer

Table of Contents
Operating mode selection . . . . . . . . . . . . . . . . . . 226
Manual gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Automatic gearbox/DSG automatic gear-
bo x* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
229
Gear
-change recommendation . . . . . . . . . . . . 235
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
SEAT Drive Profiles* . . . . . . . . . . . . . . . . . . . . . . . . 236
Driving tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Driver assistance systems . . . . . . . . . . . . . . . . 241
General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Drive assist sensors and cameras . . . . . . . . . . 242
Cruise control system (CCS) . . . . . . . . . . . . . . . 245
Speed limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Emergency brake assistance system (Front
Assist)* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
ACC - Adaptive Cruise Control* . . . . . . . . . . . 253
Proactive speed adjustment . . . . . . . . . . . . . . . . 259
Lane Assist* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Driving Assist (Travel Assist) . . . . . . . . . . . . . . . . . 263
Emergency Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Lane departure warning (Side Assist) with
rear cr
oss traffic alert (RCTA) and door
opening warning (Exit Assist)* . . . . . . . . . . . . . . 267
Braking and parking . . . . . . . . . . . . . . . . . . . . . . . 273
Braking system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Stabilisation and brake assistance sys-
tems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8
Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
Help with parking and manoeuvring . . . . . 282
Assisted parking system (Park Assist)* . . . . . . 282
Parking aid parking and manoeuvring
(ParkPil
ot) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
Parking System Plus* . . . . . . . . . . . . . . . . . . . . . . . 291 Rear parking aid* . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Reverse Assist (Rear View Camera)* . . . . . . . 295
Towing bracket device* . . . . . . . . . . . . . . . . . . . 298
Trailer mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
Electrically unlocking trailer hook* . . . . . . . . . 304
Retrofitting a towing bracket . . . . . . . . . . . . . . . 306
Practical tips . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
High-voltage battery . . . . . . . . . . . . . . . . . . . . . 308
Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . 308
Conservation of the high-voltage bat-
tery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Char

ging settings in the infotainment sys-
tem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
1
Charging the high-voltage battery . . . . . . . . . 312
Charging cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Checking and refilling levels . . . . . . . . . . . . . 320
Refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Fuel types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
AdBlue® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Engine management and emissions control
system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Engine compartment . . . . . . . . . . . . . . . . . . . . . . . 328
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Cooling syst

em . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
Windscreen washer reservoir . . . . . . . . . . . . . . . 337
12-volt battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
48-volt battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
Energy management . . . . . . . . . . . . . . . . . . . . . . . 344
Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
Wheels and tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
Tyre pressure monitor system . . . . . . . . . . . . . . . 352
Spare wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
SEAT Maintenance Programme . . . . . . . . . .
356
Service intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Additional service offers . . . . . . . . . . . . . . . . . . . . 358
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
Vehicle maintenance . . . . . . . . . . . . . . . . . . . . . 360
Maintenance and cleaning . . . . . . . . . . . . . . . . . 360
Accessories and modifications to the ve-
hicle
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365
Accessories, spare parts and repair work . . . 365
Information for the user . . . . . . . . . . . . . . 367
Information for the user . . . . . . . . . . . . . . . . . . . 367
Information stored by the control units . . . . . . 367
Other important information . . . . . . . . . . . . . . . . 367
Information about the EU Directive
2014/53/EU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . 372
Indications about the technical data . . . . 372
Important information . . . . . . . . . . . . . . . . . . . . . . 372
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381
6

Fuses and bulbs
No. Consumers/Amps
12 Right lights 40
13 Central locking 40
14 Beats Audio CAN and MOST. 30
16 Airbag 7.5
17 SCR, engine relay, 1.5 10
18 KESSY 7.5
19 Instrument panel 7.5
20 Connectivity Box 7.5
21 Rear camera 7.5
24 4x4 Haldex Control Unit 15
25 RGS+EBSS front seat belts 25
26 Right door 30
27 RGS+EBSS front seat belts 25
28 PHEV. Switching off the high voltage
syst
em f
or rescue tasks. Identified
by a yellow label. 10
29 Trailer 15
30 Radio 30
31 Trailer 25
34 230V socket 30
35 Left lights 40
36 Air conditioner fan 40 No. Consumers/Amps
37 Electric rear lid 30
39 Heated steering wheel 10
40 Alarm horn 7.5
41 Gateway 7.5
42 Automatic gearbox lever 7.5
43 Air conditioning and heating con-
tr
ol panel

, rear window heating, AA
compressor 10
44 Diagnosis, handbrake switch, light
s
wit

ch, reverse light, interior light-
ing, lit-up door sill 7.5
45 Steering column 7.5
46 Radio display 7.5
47 Driving mode. 10
48 USB 7.5
52 12V socket 20
58 Parking sensors, parking assist
control unit, fr

ont camera, radar 7.5
59 Reverse switch, clima sensor, elec-
trochr

omic mirror 7.5
60 Diagnosis, headlight control unit,
headlight adjuster 7.5
61

Starter motor; clutch sensor 7.5
65 Sound amplifier 10 No. Consumers/Amps
66 Rear window wiper 15
67 Heated rear window 30 In-line fuse/Amps
230 V rear power sockets 30
Electric driver

Instruments and warning/control lamps
Within its limitations, the system also displays
additional signal s, such as time-specific pr
o-
hibitions, signs for vehicles towing trailers
››› page 298 or limitations that only apply in
the event of rain. Even on journeys without
signs, the system may display any applicable
speed limits.
The traffic sign detection system does not
work in all countries. Keep this in mind when
travelling abroad.
Shown on the display
In Germany, on motorways and vehicle
roads, besides speed limits and overtaking
provisions the system also displays the end of
prohibition signs. The valid speed limit at the
time in other countries is always shown.
The traffic signs detected by the system are
displayed on the dash panel display
››› Fig. 63 and, depending on the navigation
system fitted in the vehicle, on the infotain-
ment system as well ››› page 92
.
Hazard warning signs are not displayed in the
infotainment system.
Road sign detection system messages: There are no traffic signs available

Operation
of specific traffic signs for vehicles with trailer,
such as speed limits or o v
ertaking prohibi-
tions. Activation or deactivation is carried out
in the infotainment system using the function
button  > Driver assistance > Trailer as- sist ››› page 96
.
For trailer mode, the display of speed limits
applicable to the type of trailer or to the legal
provisions can be adjusted. The speed is ad-
justed in steps of 10 km/h (5 mph) within a
range of between 60 km/h (40 mph) and
130 km/h (80 mph). If it is adjusted to a speed
greater than that which is permitted in the
country in question for driving with a trailer,
the system automatically displays the usual
speed limits, e.g. in Germany 80 km/h
(50 mph).
If the speed warning for the trailer is deacti-
vated, the system displays the speed limits as
if there were no trailer hitched.
No entry sign
The traffic sign recognition system warns
acoustically and visually in the instrument
panel when a no entry sign is crossed on a
one-way road or an entrance to a motorway
or highway.
Limited operation
The traffic sign detection system has certain
limitations. The following cases may lead the system to operate with limitations or not at
all:

Transport and practical equipment
Transport and practical
equipment St oring ob
jects
Positioning the luggage and cargo It is possible to carry objects and luggage in
the v
ehicl

e, in a trailer ››› page 298
and on
the roof ››› page 150
. When doing so, please
consider all legal provisions.
Placing luggage inside the vehicle safely

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

Help with parking and manoeuvring
Trailer mode
The P ark Assist syst
em cannot be switched
on if the factory-fitted towing bracket
››› page 298 is electrically connected to a
trailer.
After changing a wheel
If, after changing a wheel, the vehicle stops
entering and exiting parking spaces correct-
ly, the circumference of the new wheel may
be different and the system may need to
adapt to it. The adaptation is automatic and
takes place during driving. Making turns slow-
ly and in both directions (20 km/h [12 mph])
for a few minutes may contribute to this
adaptation process ››› in Introduction on
page 283.
Selecting a parking type Fig. 197
On the instrument panel display: view
of the parking assist syst em with r

educed view. Fig. 198
On the instrument panel display: indi-
cation of parking modes. Park assist has the following 5 parking types:
Re

verse parallel parking.
Reverse angle parking.
Forward angle parking.
Reverse parallel parking without driving
past first: “Help me”.
Forward parking in a parking bay without
driving past first.
Selecting a parking type after passing in
front of the space
After activating the Park Assist system and af-
ter detecting a parking space, the display on
the instrument panel proposes a parking
type. The Park Assist system selects the park-




 ing type automatically. The selected type is
displayed on the instrument clust

er display
››› Fig. 197 and on the infotainment system
display.

Help with parking and manoeuvring
Towing device
In v ehicl
es equipped with a towing bracket
device from the factory, when the trailer is
connected, the parking aid will not be activa-
ted when reverse gear is engaged.
Reverse Assist (Rear View
Camera)*
Oper

ating and safety warnings WARNING