2020 Seat Leon ACC

SEAT S.A. is permanently concerned about continuous development of its types and models. For this reason we ask you to understand,
that at any given time, changes regarding shape, equipment and technique may take place on the car delivered. For this reason no
right at all may derive based on the data, drawings and descriptions in this current handbook.
All texts, illustrations and standards in this handbook are based on the status of information at the time of printing. Except for error or
omission, the information included in the current handbook is valid as of the date of closing print.
Re-printing, copying or translating, whether total or partial is not allowed unless SEAT allows it in written form.
SEAT reserves all rights in accordance with the “Copyright” Act.
All rights on changes are reserved.
❀This paper has been manufactured using bleached non-chlorine cellulose.
© SEAT S.A. - Reprint: 15.11.20
Vehicle identification da a
Model:
Vehicle Registration:
Vehicle identification
number:
Date of vehicle registration
or vehicle delivery:
SEAT Official Service:
Service advisor:
Telephone:
Confirmation of eceipt of documentation
and vehicle keys
The following items were delivered
with the vehicle: YES
NO
On-board documentation
First key
Second key
Correct working order of all keys was
checked
Location:





Date:
Signature of owner:

About this manual
This manual describes the f eat
ures of the ve-
hicle at the time of drafting this text. Some of
the features described below will be intro-
duced in the future or will only be available in
certain markets.
Some of the features described here are
not included in all the types or variations
of the model and they can be varied or
modified based on technical or marketing
requirements without it being considered
misleading advertising.
Some details on the drawings may vary from
its vehicle and must be interpreted as a
standard representation.
The direction indicators (left, right, forwards,
backwards) in this manual refer to the travel
direction of the vehicle unless otherwise sta-
ted.
The audiovisual material is only meant to
help the users better understand some fea-
tures of the vehicle. It is not a replacement for
the instruction manual. Access the instruction
manual to see the complete information and
warnings.
The features marked with an asterisk
are included by default only in certain
versions of the model, supplied as op-
tional only for certain versions or only of-
fered in certain countries.
 Trademarks are mark
ed with ®. The ab-
sence of this symbol does not guarantee
that the term is not a trademark.
It indicates that the section continues on
the next page.
You can access the information in this manual
using:

Table of Contents
Table of Contents Gener al vie
ws of the vehicle . . . . . . . . 7
Exterior view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Exterior view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Exterior view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Exterior view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Overview (left hand drive) . . . . . . . . . . . . . . . . 11
Overview (right hand drive) . . . . . . . . . . . . . . . 12
Interior view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Safe driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Advice about driving . . . . . . . . . . . . . . . . . . . . . . . . 14
Correct sitting position of vehicle occu-
pants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Pedal area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
The whys and wherefores of seat belts . . . . . 18
How to properly adjust your seat belt . . . . . . 21
Seat belt tensioners . . . . . . . . . . . . . . . . . . . . . . . . 23
PreCrash system* . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Brief introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Operation of the airbags . . . . . . . . . . . . . . . . . . . 27
Transporting children safely . . . . . . . . . . . . . . 33
Child safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Emergencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44Self-help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Information, assistance and emergency
call service* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Emergency equipment . . . . . . . . . . . . . . . . . . . . . 45
Tyre repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Changing a wheel . . . . . . . . . . . . . . . . . . . . . . . . . . 48Changing the windscreen wiper blades . . . . 53
Jump start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Tow start and towing . . . . . . . . . . . . . . . . . . . . . . . 56
Fuses and bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
61
Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Controls and displays . . . . . . . . . . . . . . . . . . . . 67
Interior view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Instruments and warning/control
lamps
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Instrument panel . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Using the instrument panel . . . . . . . . . . . . . . . . . 87
Control lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Infotainment system . . . . . . . . . . . . . . . . . . . . . . . . 92
Multifunction steering wheel* . . . . . . . . . . . . . . 97
Opening and closing . . . . . . . . . . . . . . . . . . . . . . 98
Set of vehicle keys . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Central locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Anti-theft alarm system* . . . . . . . . . . . . . . . . . . . 107
Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Window controls . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Sunroof* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Vehicle lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Interior lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Visibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Windscreen wiper and rear window wiper
systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Mirr

ors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Sun protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 Seats and headrests . . . . . . . . . . . . . . . . . . . . . . 134
Adjusting seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
134
Headrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Seat functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Transport and practical equipment . . . . . . 141
Storing objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Luggage compartment . . . . . . . . . . . . . . . . . . . . . 142
Net partition* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Roof carrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Storage compartment . . . . . . . . . . . . . . . . . . . . . 152
Power sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Air conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Heating, ventilation and cooling . . . . . . . . . . . . 157
Auxiliary heating (additional heating)* . . . . . 165
Stationary air conditioning* . . . . . . . . . . . . . . . . 169
Infotainment system . . . . . . . . . . . . . . . . . . 172
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
First steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Overview and controls . . . . . . . . . . . . . . . . . . . . . 176
General instructions for use . . . . . . . . . . . . . . . . 178
Data transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
SEAT CONNECT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Full Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
WLAN access point* . . . . . . . . . . . . . . . . . . . . . . . . 193
Infotainment operation . . . . . . . . . . . . . . . . . . . 195
voice control* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Radio/Multimedia . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Navigation* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Telephone interface . . . . . . . . . . . . . . . . . . . . . . . . 211
Multimedia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Start and driving . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Starting and stopping the engine . . . . . . . . . . . 218
Start-Stop system* . . . . . . . . . . . . . . . . . . . . . . . . . 223 5

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

Seat belts
Rear seat belts fastened display* Fig. 10
Instrument panel: left rear seat occu-
pied and corr esponding seat belt f
astened dis-
play. Depending on the model version, when the
ignition is s
wit

ched on, the seat belt status
display ››› Fig. 10
on the instrument panel in-
forms the driver whether the passengers in
the rear seats have fastened their seat belts.
It indicates that the corresponding seat
is empty.
Indicates that the seat is occupied and
the occupant is wearing the seat belt.
The seat belt status flashes for a maximum of
30 seconds when a seat belt in the rear seats
is unfastened while the vehicle is in motion. An
audible warning will also be heard if the vehi-
cle is travelling at over 25 km/h (15 mph).
If a seat belt is fastened or unfastened while
driving in some of the rear seats, the seat belt
]
i status is displayed for approximately 30 sec-
onds. The indication can be hidden by press-
ing the E

 button on the dash panel.
The protective function of seat
belts Fig. 11
Drivers with properly worn seat belts
will not be thr o

wn forward in the event of sud-
den braking. Properly worn seat belts hold the occupants
in the pr
oper position. They al

so help prevent
uncontrolled movements that may result in
serious injury and reduce the risk of being
thrown out of the vehicle in case of an acci-
dent.
Vehicle occupants wearing their seat belts
correctly benefit greatly from the ability of
the belts to absorb kinetic energy. In addition,
the front part of your vehicle and other pas-
sive safety features (such as the airbag sys- tem) are designed to absorb the kinetic ener-
gy rel

eased in a collision. Taken together, all
these features reduce the releasing kinetic
energy and consequently, the risk of injury.
This is why it is so important to fasten seat
belts before every trip, even when "just driving
around the corner".
Ensure that your passengers wear their seat
belts as well. Accident statistics have shown
that wearing seat belts is an effective means
of substantially reducing the risk of injury and
improving the chances of survival when in-
volved in a serious accident. Furthermore,
properly worn seat belts improve the protec-
tion provided by airbags in the event of an
accident. For this reason, wearing a seat belt
is required by law in most countries.
Although your vehicle is equipped with air-
bags, the seat belts must be fastened and
worn. The front airbags, for example, are only
triggered in some cases of head-on collision.
The front airbags will not be triggered during
minor frontal or side collisions, rear-end colli-
sions, overturns or accidents in which the air-
bag trigger threshold value in the control unit
is not exceeded.
Important safety instructions for
the use of seat belts

Seat belts
amount of the passengers' kinetic energy will
be only absorbed by the mentioned impact.
Ev en at speeds of 30 km/h (
19 mph) to
50 km/h (30 mph), the forces acting on bod-
ies in a collision can easily exceed one tonne
(1000 kg). At greater speed these forces are
even higher.
Vehicle occupants not wearing seat belts are
not “attached” to the vehicle. In a head-on
collision, they will move forward at the same
speed their vehicle was travelling just before
the impact. This example applies not only to
head-on collisions, but to all accidents and
collisions.
Even at low speeds the forces acting on the
body in a collision are so great that it is not
possible to brace oneself with one's hands. In
a frontal collision, unbelted passengers are
thrown forward and will make violent contact
with the steering wheel, dash panel, wind-
screen or whatever else is in the way
››› Fig. 12.
It is also important for rear passengers to
wear seat belts properly, as they could other-
wise be thrown forward violently through the
vehicle interior in an accident. Passengers in
the rear seats who do not use seat belts en-
danger not only themselves but also the front
occupants ››› Fig. 13
. How to properly adjust your
seat belt
Fast
ening and unfastening the seat
belt Fig. 14
Insert the latch plate of the seat belt in-
t o the buckl

e. Fig. 15
Release the seat belt

Airbag system
The control unit analyses the collision trajec-
t ory and activ
ates the respective restraint
system.
If the deceleration rate is below the prede-
fined reference value in the control unit the
airbags will not be triggered, even though the
accident may cause extensive damage to the
car.
The following airbags are triggered in seri-
ous head-on collisions:

Safety
Fit a child seat with the ISOFIX / i-Size and Top Tether system Fig. 32
Rear seat: die cut slots to access the
ISOFIX / iSiz e securing rings. Fig. 33
Front passenger seat: ISOFIX/i-Size se-
curing rings. Child seats can be secured quickly, easily
and saf
ely on the r
ear side and passenger
seats with the “ISOFIX” and Top Tether sys-
tem.
Two “ISOFIX” securing rings are fitted on each
rear side and passenger seat. In some vehi- cles, the rings are secured to the seat frame
and, in others, they are secur
ed to the rear
floor. The “ISOFIX” rings are located between
the rear seat backrest and the seat cushion-
ing ››› Fig. 32
,
››› Fig. 33
. The Top Tether rings
are located on the rear part of the rear seat backrests (behind the backrest or in the lug-
gage compartment)
››
› page 40
.
To understand the compatibility of the “ISO-
FIX” systems in the vehicle, check the table
below.
Vehicle ISOFIX positions Weight group Size class
a)
Electrical
equipment Front passenger seat
Rear side seatRear central
seat
airbag enabled airbag disabled
Group 0 to 10 kg EISO/R1 X ILILX
IUF: Suitable for forward-facing ISOFIX universal child restraint systems approved for use in this weight group.
IL : It is suit

able for certain ISOFIX child restraint systems (CRS) that can be for the specific vehicle, restricted or semi-universal categories. Take the child seat manufacturer