battery Seat Leon 2020 Owner's Guide

Checking and refilling levels

Fires, sparks, open flames and smoking are
pr
ohibit
ed.
 The battery should only be charged in a well-
v
entil

ated zone. Risk of explosion!
 Keep children away from acid and batteries!

Practical tips
WARNING
The 12 volt battery is a subject to wear. A
r eduction in batt
ery power can mean that
some important safety systems, such as
power steering, braking intervention, lights
or airbag systems, operate with limitations
or stop working entirely. This may cause
serious accidents and injuries. To avoid
this, it is necessary to take the following
safety measure:

Checking and refilling levels
Access to the 12 volt battery  V
alid for vehicles: plug-in hybrid (PHEV) Fig. 231
Location of the battery in the luggage
compartment Installation and removal of the 12-volt bat-
t
ery co
ver

Practical tips
Charging the battery
The v ehicl
e battery should be charged by a
specialised workshop only, as batteries using
special technology have been installed and
they must be charged in a controlled environ-
ment.
Replacing a vehicle battery
The 12-volt vehicle battery has been de-
signed to suit its location and has special
safety features. If you need to change the
battery, please go to a service centre before
buying a new one to get information about
the electromagnetic compatibility, size and
maintenance requirements, performance and
safety of your vehicle’s new battery. SEAT
recommends you have the battery replaced
by a technical service.
Start-Stop systems ( ››› page 224
) are equip-
ped with a special battery. Therefore, it must
only be replaced with a battery of the same
specifications.
Your vehicle is equipped with an intelligent
power management system to control the
distribution of electrical energy ››› page 344
.
The power management function ensures
that the battery is charged much more effi-
ciently than on vehicles without a power
management system. To maintain this func-
tion after replacing the battery, we recom-
mend that the replacement battery used is of
the same make and type as the original fitted battery. To make proper use of the power
management function after the batt
ery has
been changed, have the battery coded to the
power management mode at a specialised
workshop. WARNING

Checking and refilling levels
by duly qualified and trained technical
st aff .
T
ake care when handling flammable sub-
stances.
In addition to a 12-volt battery, the vehicle
may be fitted with a 48-volt battery located
underneath the front passenger seat.
The works that are to be carried out on the
48 volt battery should be performed exclu-
sively by a specialised workshop with duly
qualified technical staff, trained according to
the SEAT guidelines.
Overview of the 48 volt system
The 48 volt system consists of the following
components, among others:

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

SEAT Maintenance Programme
SEAT Service Mobility Since the moment you purchase your SEAT
v
ehicl
e you will be able to enjoy the benefits
and coverage of the SEAT Mobility Service.
For the first two years after the purchase,
your new SEAT vehicle is automatically cov-
ered by the SEAT Mobility Service without ad-
ditional costs.
If you wish to enjoy this service after this peri-
od, you can extend SEAT Mobility as long as
you carry out the recommended Inspection
and Maintenance Services at a SEAT Author-
ised Service.
If your SEAT vehicle is immobilised due to a
fault or an accident, our assistance services
will help you keep moving.
Take into account that the SEAT Mobility
Service differs depending on the country in
which the vehicle was purchased. For further
information ask your SEAT dealership or the
SEAT website in your country.
Warranty Fault

-free operation warranty SEAT Authorised Services ensure the perfect
condition of ne
w v

ehicles. Check the pur-
chase agreement or complementary addi- tional documentation provided by your Tech-
nical Service to see the conditions and the
t

erms of the warranty. Consult further infor-
mation in this regard in your SEAT Official
Service.
Commercial warranty for the high-
volt
age battery of electric and hy-
brid vehicles of SEAT S.A. 1. Compl
ementing the aforementioned war-
r
anties, the seller SEAT dealer grants the
high-voltage batteries of the vehicles that it
has sold an 8-year or 160,000-km warranty,
whichever comes first, for any material or fin-
ish defect.
2. The reduction of the battery’s capacity
over time is conditioned by the component it-
self and does not represent a defect from a
warranty point of view.
3. The warranty for high-voltage batteries will
be invalidated when the defect is due to use,
handling or maintenance not in accordance
with the content of the instruction manual.
This is particularly applicable the battery
charge.
4. In addition, except for the duration of the
warranty, all conditions relating to the legal
warranty of the SEAT dealer (requirements,
criteria for assessing the absence of defects,
exclusion grounds, processing of entitlements to benefits, entry into force, start and scope
of the w
arr

anty validity period, etc.) shall ap-
ply in relation to the high-voltage battery. 359

Index
Index
Numbers and Symbol s
12-v
olt battery
assisted start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
charge level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344
charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
disconnect and connect . . . . . . . . . . . . . . 86, 338
electrolyte level . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
energy management . . . . . . . . . . . . . . . . . . . . . 344
replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
winter operations . . . . . . . . . . . . . . . . . . . . . . . . . 338
48-volt battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342 control lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
A
ABS see Anti-lock brake system . . . . . . . . . . . . . . . . 279
ACC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155, 365
Activating SEAT CONNECT . . . . . . . . . . . . . . . . . . 186
Active cylinder management (ACT) status indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Adapting the playback volume . . . . . . . . . . . . . . . 181
Adaptive Cruise Control . . . . . . . . . . . . . . . . . . . . . 253 control and warning lamp . . . . . . . . . . . . . . . . . 254
malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
noises . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
special driving situations . . . . . . . . . . . . . . . . . . 256
status display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
system limitations . . . . . . . . . . . . . . . . . . . . . . . . . 257 AdBlue
control and w arning lamps . . . . . . . . . . . . . . . . 324
information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
minimum filling capacity . . . . . . . . . . . . . . . . . . 324
specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Additional heating see Auxiliary heating . . . . . . . . . . . . . . . . . . . . . . 165
Adjust front seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
headrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
seat with memory . . . . . . . . . . . . . . . . . . . . . . . . . 137
time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Adjusting the seat belt . . . . . . . . . . . . . . . . . . . . . . . . 22
Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
activating and deactivating . . . . . . . . . . . . . . . . 29
centre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
for the head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
for the knees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
deactivation of the front airbag . . . . . . . . . . . . 29
description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
front airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
how it works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Air conditioning
air recir culation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
air vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
parking ventilation . . . . . . . . . . . . . . . . . . . . . . . . . 165
usage instructions . . . . . . . . . . . . . . . . . . . . . . . . . 162
Air recirculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Air vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Alternator warning lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Ambient lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Android Auto™ Disconnecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
establish connection . . . . . . . . . . . . . . . . . . . . . . . 191
menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
special characteristics . . . . . . . . . . . . . . . . . . . . 192
Anti-lock brake system . . . . . . . . . . . . . . . . . . . . . . 279
Anti-puncture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46, 47
Anti-puncture kit . . . . . . . . . . . . . . . . . . . . . . . . . . 45, 46 check after 10 minutes . . . . . . . . . . . . . . . . . . . . . 48
components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
inflating the tyre . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
sealing the tyre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Anti-puncture set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Anti-theft alarm system . . . . . . . . . . . . . . . . . . . . . . 107 trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301
Anti-trap function sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
sunshade blind (glass roof) . . . . . . . . . . . . . . . . 119
windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Apple CarPlay Disconnecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
establish connection . . . . . . . . . . . . . . . . . . . . . . 190
381

Index
menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
r equir
ements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
special characteristics . . . . . . . . . . . . . . . . . . . . . 191
Applications (apps) . . . . . . . . . . . . . . . . . . . . . . . . .190
Aspects to think about before starting the ve- hicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Assistance systems adaptive cruise control . . . . . . . . . . . . . . . . . . . 253
assisted parting system (Park Assist) . . . . . . 282
Auto Hold function . . . . . . . . . . . . . . . . . . . . . . . . . 277
connecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
cruise control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
disconnecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
door opening warning (Exit Assist) . . . . . . . . . 271
driver alert system . . . . . . . . . . . . . . . . . . . . . . . . . . 77
driving assist (Travel Assist) . . . . . . . . . . . . . . . 263
Emergency Assist . . . . . . . . . . . . . . . . . . . . . . . . . 265
emergency braking (Front Assist) . . . . . . . . . 249
front camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
front radar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
general notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Lane Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
lane departure warning (Side Assist) . . . . . . 267
parking aid Plus . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
PreCrash system . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
proactive speed adjustment . . . . . . . . . . . . . . 259
rear camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
rear cross traffic alert (RCTA) . . . . . . . . . 267, 270
rear parking aid . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
rear radar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
road sign detection system messages . . . . . . 78
safety advice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
speed limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
system limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Tyre pressure monitor indicator . . . . . . . . . . . 352 Tyre pressure monitoring . . . . . . . . . . . . . . . . . . 352
ultrasound sensors . . . . . . . . . . . . . . . . . . . . . . . .
244
Assisted start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Audible warning control and warning lamps . . . . . . . . . . . . . . . . . 89
lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
unbuckled seat belt . . . . . . . . . . . . . . . . . . . . . . . . . 18
Auto Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Auto Hold Function . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Auto Lock (central locking) . . . . . . . . . . . . . . . . . . . 101
Automatic car wash . . . . . . . . . . . . . . . . . . . . . . . . 360 disconnecting the Auto Hold function . . . . . . 277
Automatic dipped beam headlight control . . . 121
Automatic gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . 229 control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
downhill assistant . . . . . . . . . . . . . . . . . . . . . . . . . 233
driving tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
kick-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
launch-control program . . . . . . . . . . . . . . . . . . 233
operating fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
parking lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
selector lever lock . . . . . . . . . . . . . . . . . . . . . . . . 230
selector lever positions . . . . . . . . . . . . . . . . . . . . 229
steering wheel with shift paddles . . . . . . . . . . 231
tiptronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229, 231
towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Auxiliary heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
activate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
connecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
disconnecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
electricity consumers . . . . . . . . . . . . . . . . . . . . . 168
programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
radio-operated remote control . . . . . . . . . . . . 167 remote control range . . . . . . . . . . . . . . . . . . . . . . 167
special charact
eristics . . . . . . . . . . . . . . . 166, 168
usage instructions . . . . . . . . . . . . . . . . . . . . . . . . . 168
Average fuel consumption . . . . . . . . . . . . . . . . . . . . 70
B Backrest of the rear seat folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
raise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Bag hooks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147, 154
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 change on the remote control (independ-ent heating) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Battery Manager Menu . . . . . . . . . . . . . . . . . . . . . . 311
Before starting the vehicle . . . . . . . . . . . . . . . . . . . . 14
Belt tightening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Bicycle carrier fitting onto the coverable tow hook . . . . . . . 305
max. load rating . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Biodiesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Blown bulbs change a bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Bluetooth® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183 profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328, 331
opening and closing . . . . . . . . . . . . . . . . . . . . . . 329
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274 brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
brake servo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
braking assistant . . . . . . . . . . . . . . . . . . . . . . . . . . 279
electronic parking brake . . . . . . . . . . . . . . . . . . 275
emergency brake function . . . . . . . . . . . . . . . . 276
new brake pads . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Braking assistant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279
382