Get Driving -> Stabilisation and brake assistance systems Guide for Cupra Leon 4 Door First Generation (2020-2026)

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ignition off, the function will remain on the

following time the ignition is switched on.

WARNING

Stabilisation and brake as-

sistance systems

The smart technology incorporated into

the Auto Hold function cannot defy the

laws of physics; it only works within the lim-

its of the system. The greater convenience

provided by the Auto Hold function should

never tempt you to take any risk that may

compromise safety.

If the Auto Hold function was not switched

on, it will automatically remain off next time

the ignition is engaged.

Control lamps

The Auto Hold function connects auto-

matically if the following conditions are

met (all points must be met at the same

It lights up



Fault in the ESC or ABS, or disconnection caused by

the system.

The ESC works in combination with the ABS. If the ABS

fails, the lamp also lights up.

●

Never leave the vehicle running and with

time

›››

the Auto Hold function switched on.

1. The vehicle is kept stationary with the

brake pedal on a flat surface or on a

slope.

●

The Auto Hold function cannot always

keep the vehicle stationary uphill or down-

hill or stop it sufficiently, for example, on

slippery or frozen surfaces.

Flashes



2. The engine rotates “correctly”.

ESC or TCS activated.

The Auto Hold function is automatically

turned off if the following conditions are

met:

Note

It lights up



Before entering a car wash, always switch

off the Auto Hold function, because if the

electronic parking brake is automatically

connected, it may cause damage.

TCS manually deactivated.

1. If any of the conditions mentioned on

Or: ESC in Sport mode page 271 .

›››

page 267, Conditions for keeping

›››

the vehicle stationary with the Au-

It lights up



to Hold function are no longer met.

ABS faulty or does not work.

2. If the engine is running irregularly or an

anomaly is detected.

WARNING

3. If the engine stalls.

When the ignition is switched on, the status

of the brake system and the brake assist

functions is automatically checked. The

control lights on the instrument cluster

light up briefly and then turn off again. If a

warning light stays on permanently, there is

4. If the accelerator is pressed

5. If any of the tyres has only minimal con-

tact with the ground, e.g. in the case of

axle articulation.

268

Braking and parking

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.

switch on again automatically when the

brake has cooled down.

a fault. Seek qualified technical assistance

immediately.

Tractor-trailer sway mitigation

If the vehicle 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

Brake assist systems

If the running gear or brake system is modi-

fied, the effectiveness of the ABS could be

severely limited.

Electronic Stability Control (ESC)

The ESC helps to improve safety. It reduces

the tendency to skid and improves the stabil-

ity and roadholding of the vehicle. The ESC

detects critical handling situations, such as

vehicle understeer or oversteer, or wheel-

spin on the driving wheels. It stabilises the

vehicle by braking individual wheels or by re-

ducing the engine torque. The warning lamp

will flash on the instrument panel when the

ESC is intervening .

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.

in all countries page 294 .

›››

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 oth-

er 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.

Traction control (TCS)

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 con-

trol (XDS) and the tractor-trailer sway mitiga-

tion.

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)

ESC also helps stabilise the vehicle by chang-

ing the torque.

When the EDL detects wheelspin, it brakes

the spinning wheel and directs the power to

the other driven wheel. This function is ac-

tive up to approximately 100 km/h (62 mph).

The TCS can be deactivated when wheel spin

is desirable page 271 .

›››

The XDS can detect and correct this effect

via the sensors and signals of the ESC.

To prevent the disc brake of the braked

wheel from overheating, the EDL cuts out

automatically if subjected to excessive loads.

The vehicle can still be driven. The EDL will

Anti-lock brake system (ABS)

ABS prevents the wheels from locking up un-

der braking until the vehicle has reached a

Via the ESC, the XDS will brake the inside

wheel and counter the excess driving torque

269

Driving

of that wheel. This means that the requested

trajectory is much more precise.

Electromechanical brake servo (eBKV)

on the selected driving programme and the

level of charge of the high-voltage battery.

With the ignition switched on, the electro-

mechanical brake servo supports the force

of the foot by increasing the pressure that

the driver exerts on the brake pedal. When

the brakes are applied by the driver assist

systems, such as those regulated by the ACC

(adaptive cruise control) or emergency brak-

ing, the brake pedal may move downwards.

After disconnecting the ignition, the assis-

tance of the brake servo is progressively re-

duced. Once stopped, immobilise the vehi-

cle to prevent it from moving. Please follow

XDS works in combination with the ESC and

is always active, even when TCS is switched

off, or when the ESC is in Sport mode or dis-

connected.

If the braking effect caused by the recupera-

tion is very intense, the vehicle’s brake lights

with turn on. The electric engine, when op-

erating as an alternator, can generate brak-

ing torque on the front wheels based on the

RPM and the temperature and charge level

of the high-voltage battery.

Multi-collision brake

The multi-collision brake consists of auto-

matic braking activated by the Airbag control

unit. It is activated when, in the event of an

accident, the Airbag control unit detects de-

celerations above the activation level, and

braking is managed by the ESC system.

These variable parameters cause fluctuating

electric decelerations which are hydraulically

compensated according to the driver’s de-

sires. This function is called “brake blending”

and it combines mechanical braking with the

engine brake effect.

the parking instructions page 272 .

›››

If the electromechanical brake servo does

not work, the red symbol  indicating failure

in the brake system appears in the instru-

ment panel. When braking with the faulty

electromechanical brake servo, vibration of

the brake pedal may occur.

In the event of an accident, the multi-colli-

sion brake can help the driver by braking to

avoid the risk of skidding during the accident

and causing other collisions.

WARNING

Driving at high speed on icy, slippery wet

ground can result in loss of vehicle control

and serious injury to the driver and passen-

gers.

The following actions control automatic

braking during the accident:

If the electromechanical brake servo is not

working, the brake pedal must be pressed

harder, as the braking distance increases due

to the lack of assistance from the servo

brake.

●

The ESC, ABS, TCS, EDS and the electron-

●

When the driver presses the accelerator,

the automatic braking does not take place.

ic torque control systems cannot exceed

the limits imposed by the laws of physics.

Always bear this in mind, especially on wet

or slippery roads. If you notice the systems

cutting in, you should reduce your speed

immediately to suit the road and traffic

conditions. Do not be encouraged to take

●

When the braking pressure through press-

ing the brake pedal is greater than the sys-

tem’s braking pressure the vehicle will brake

automatically.

Brake blending¹⁾

The brake energy recuperation can generate

a braking effect. This braking effect depends

●

Multi-collision braking will not be available

if there is an anomaly in the ESC system.

Valid for hybrid vehicles

270

Braking and parking

When “Sport” mode is connected, the inter-

ventions of the ESC to stabilise the vehicle,

and the traction control (TCS) interventions

are limited. In addition, the  control lamp

lights up on the instrument panel.

Connecting and disconnecting

the ESC and TCS

risks by the presence of more safety sys-

tems. If you do, an accident may occur.

●

Please remember that the accident risk

always increases if you drive fast, especially

in corners or on a slippery road, or if you

follow too close behind the vehicle in front

of you. The ESC, ABS, brake assist, EDS and

the electronic torque control system can-

not prevent accidents: risk of accidents!

Disconnecting and connecting the ESC

●

The ESC can be turned off by pressing and

holding the  button on the centre console

●

Accelerate with caution on slippery sur-

Fig. 189, and it can be turned on again by

briefly pressing the same button.

›››

faces (for example, icy or snow-covered).

Despite the control systems, the driven

wheels could spin, affecting the stability of

the vehicle: risk of accident!

●

OR: in the infotainment system press  >

Assistants > ESC Menu page 92 . In vehi-

›››

Fig. 189 In the lower part of the centre

console: button to switch the ESC off/on

cles with a driver information system the cor-

responding indication will be displayed.

Note

The ESC is switched on automatically when

the engine is started, and only works when

the engine is running and includes the ABS,

EDS and TCS systems.

When the ESC is disconnected the control

warning lamp  lights up on the instrument

panel.

●

The ABS and TCS will only operate cor-

rectly if the four wheels have identical

tyres. Any differences in the rolling radius

of the tyres can cause the system to reduce

engine power when this is not desired.

WARNING

Disconnecting and connecting the ESC in

“Sport” mode

The ESC Sport mode should be activated

only when traffic conditions and the ability

of the driver allow it. Danger of skidding!

●

The regulating processes of the systems

can make noises due to their operation.

●

In “Sport” mode, the ESC can be switched

●

If the warning lamp  or  lights up,

●

off and on by briefly pressing the  button on

With ESC in Sport mode, the stabilising

there could be a fault page 85 .

›››

Any modifications made to the vehicle

the centre console Fig. 189 .

function will be limited to allow for a sporti-

er drive. The driving wheels could spin and

the vehicle could skid.

›››

●

OR: in the infotainment system, press the

(for example, to the engine, brake system,

running gear or to the combination of

wheels and tyres) may affect the operation

of the ABS, TCS and EDS.

function button  > Assistants > ESC Menu

●

If the ESC is deactivated, the vehicle sta-

page 92. In vehicles with a driver informa-

tion system the corresponding indication will

be displayed.

›››

bilisation function is not available.

271

Driving -> Stabilisation and brake assistance systems for Your Cupra Leon 4 Door First Generation (2020-2026)

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