Stabilisation And Brake Assistance Sys; Tems - Seat Leon Owner's Manual

Stabilisation and brake as-
sistance systems
Control lamps
 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.
 Flashes
ESC or TCS activated.
 It lights up
TCS manually deactivated.
›››
Or: ESC in Sport mode page 259.
 It lights up
ABS faulty or does not work.
The control lamps light up together when the
ignition is switched on and should turn off af-
ter approximately 2 seconds. This is the time
taken for the function check.
Braking and parking
Brake assist systems
Electronic Stability Control (ESC)
The ESC helps to improve 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 259.
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 effectiveness 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 trac-
tion control system reduces the engine tor-
que 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.
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