2020 Seat Leon brakes

Operation
7. Always take the vehicle key with you when you l eav
e the vehicle.
All turn signals flash simultaneously when the
hazard warning lights are switched on. The
two turn signal turn signal lamps   and the
turn signal lamp in the switch  will flash at
the same time. The simultaneous hazard
warning lights also work when the ignition is
switched off.
Emergency braking warning
If the vehicle brakes suddenly and continu-
ously at a speed of more than 80 km/h (50
mph), the brake light flashes several times per
second to warn the vehicles driving behind. If
you continue braking, the hazard warning
lights will come on automatically when the
vehicle comes to a standstill. They switch off
automatically when the vehicle starts to
move again. WARNING

Driving
Downhill speed control is deactivated as
soon as the r oad l
evels out again or you press
the accelerator pedal.
On vehicles with cruise control system*
››› page 245, downhill speed control is acti-
vated when you set a cruising speed. WARNING
The downhill speed control cannot defy the
l aws of physics. Ther

efore, speed cannot
be maintained constant in all situations. Al-
ways be prepared to use the brakes! Inertia mode
The inertia mode allows you to travel certain
dist
ances without using the accel

erator,
which saves fuel. Plan ahead and use the in-
ertia mode to “let” the vehicle “roll”.
Activation of the inertia mode
Condition: lever in position D, slopes of less
than 12% and speeds between 20 and 130
km / h (12 and 80 mph).

Start and driving
For the sake of the environment
If the engine is run in gently, the life of the
engine will be incr eased and the engine oil
consumption r
educed.Economical and environmentally
friendly driving
Fuel consumption, environmental pollution
and w
ear t

o the engine, brakes and tyres all
depend largely on driving style. Consumption
can be reduced between 10-15% with an effi-
cient driving type. The following section gives
you some tips on lessening the impact on the
environment and reducing your operating
costs at the same time.
Active cylinder management (ACT®)*
Depending on vehicle equipment, the active
cylinder management (ACT®) may deacti-
vate some of the engine cylinders if the driv-
ing situation does not require too much pow-
er. The number of active cylinders can be
seen on the instrument panel display.
››› page 72.
Foresight when driving
If you think ahead when driving, you will need
to brake less and thus accelerate less. Take
advantage of the inertia of the vehicle when-
ever possible, with a gear engaged. This takes advantage of the engine braking effect,
r
educing w

ear on the brakes and tyres. Emis-
sions and fuel consumption will drop to zero.
Changing gear to save energy
An effective way of saving is to change in ad-
vance to a higher gear.
Manual transmission: shift up from first to
second gear as soon as possible. Choosing
the right gear enables fuel savings. Select the
highest possible gear appropriate for the
driving situation (the engine should continue
functioning with cyclical regularity).
Automatic transmission: accelerate gradu-
ally and without reaching the “kick-down”
position.
Avoid driving at high speed
Avoid travelling at your vehicle’s top speed,
whenever possible. Fuel consumption, emis-
sion of harmful gases and noise pollution
multiply as speed is increased. Driving at
moderate speeds will help to save fuel.
Reduce idling time
In vehicles with the Start-Stop system idling is
automatically reduced. In vehicles without
the Start-Stop system it is worth switching off
the engine, for example, at level crossings
and at traffic lights that remain red for long
periods of time. When an engine has reached
operating temperature, and depending on the cylinder capacity, keeping it switched off
for a minimum of about 5 seconds alr
eady
saves more than the amount of fuel necessa-
ry for restarting.
The engine takes a long time to warm up
when it is idling. Mechanical wear and pollu-
tant emissions are also especially high during
this initial warm-up phase. It is therefore best
to drive off immediately after starting the en-
gine. Avoid running the engine at high speed.
Regular maintenance
Regular servicing helps in saving fuel even
before the engine is started. A well-serviced
engine gives you the benefit of improved fuel
efficiency as well as maximum reliability and
an enhanced resale value. A badly serviced
engine can consume up to 10% more fuel
than necessary.
Avoid short journeys
The engine and catalytic converter need to
reach their optimal operating temperature
in order to minimise fuel consumption and
emissions.
A cold engine consumes a disproportionate
amount of fuel. The engine reaches its work-
ing temperature after about four kilometres
(2.5 miles), when fuel consumption will return
to a normal level. »
239

Driving
Advance warning
If the syst em det
ects a possible collision with
the vehicle in front, it alerts the driver by
means of an audible warning and an indica-
tion on the instrument panel display {
››› Fig. 176.
The warning moment varies depending on
the traffic situation and driver behaviour. At
the same time, the vehicle will prepare for a
possible emergency braking ››› in Intro-
duction on page 2 49

.
When Front Assist is connected, the indica-
tions of other functions on the screen may be
hidden.
Critical warning
If the driver fails to react to the advance
warning, the system may actively intervene
in the brakes and generate a brief jolt to warn
the driver of the imminent danger of a colli-
sion.
Automatic braking
If the driver also fails to react to the critical
warning, the system may initiate independ-
ent emergency braking by progressively in-
creasing the braking in accordance with the
criticality of the situation. Driver emergency braking assistance sys-
tem
If the driv

er, after the critical warning, starts
braking but the system detects that the brake
is not being applied with sufficient force, the
braking intensity will be increased. This brake
assist only occurs if the pedal is pressed firm-
ly. WARNING

Driver assistance systems
the side of the vehicle towards which traffic is
appr oaching in tr
ansverse direction 1)
.
Automatic braking to reduce damages
If the rear cross traffic alert detects that
someone else on the road is approaching the
rear of the vehicle and the driver does not
step on the brake, the system will engage the
brakes automatically.
The parking system helps the driver by auto-
matically engaging the brakes to reduce any
damage. The automatic intervention on the
brakes takes place when driving in reverse at
approx. 1-12 km/h (1-7 mph). After detecting
that the vehicle is stationary, the system
keeps it that way for around 2 seconds.
After automatically braking to reduce dam-
age, the system will not be able to automati-
cally brake again for approximately 10 sec-
onds.
You can interrupt the automatic braking by
stepping hard on the accelerator pedal or
the brake pedal in order to regain control of
the vehicle. WARNING
The smart technology incorporated into
the r ear cr

oss traffic alert cannot over- come the limits imposed by the laws of
physics; it only w
orks within the limits of the
syst

em. The parking assistant function
should not tempt you into taking any risks.
The system is not a replacement for driver
awareness.

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

Driving
Trailer brakes
If the tr ail
er has its own brake system, please
take the relevant legal requirements into ac-
count. Never connect the trailer's brake sys-
tem to the vehicle's brake system.
Tow cable
Always use a cable between the vehicle and
the trailer ››› page 300
.
Trailer tail lights
The trailer's rear lights should comply with
the statutory safety regulations ››› page 300
.
Never connect the trailer's rear lights directly
to the vehicle's electric system. If you are not
sure that the trailer's electrical connection is
correct, have it checked by a specialised
workshop. SEAT recommends visiting a SEAT
dealership for this.
Exterior mirrors
If you cannot see the area behind the trailer
with the exterior mirrors of the towing vehicle,
additional mirrors will have to be installed in
accordance with the regulations of the coun-
try in question. The exterior mirrors should be
adjusted before you start driving and must
provide a sufficient field of vision at the rear. WARNING
If the towing bracket is wrongly fitted or is
not the right one , the tr

ailer could become detached from the vehicle and cause seri-
ous injury.
CAUTION

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