2020 Seat Leon warning

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
instrument cluster for a few seconds. You can
e xt
end or reactivate this warning by pressing
the button  or, depending on your vehicle’s
equipment, by grabbing the steering wheel.
During this time, the vehicle will move off
again if the vehicle in front moves forwards.
To move off when the message ACC ready
to start is not longer displayed, once the
vehicle in front has moved off:

Driver assistance systems
Proactive speed adjustment Intr oduction The proactive speed adjustment adapts the
speed t
o the speed limit
ations detected and
to the road layout (curves, crossings, round-
abouts, etc.).
Proactive speed adjustment is an additional
function of the ACC ››› page 253
and uses
the traffic signal detection system
››› page 78 and the navigation data of the in-
fotainment system.
Proactive speed adjustment is available de-
pending on the equipment, although not in all
countries. WARNING
The proactive speed adjustment smart
t echnol

ogy cannot overcome the limits im-
posed by the laws of physics and it only
works within the limits of the system. Never
allow the enhanced convenience of this
function induce you to take any risk that
compromises safety. If used negligently or
involuntarily, it may cause serious acci-
dents and injuries. The system is not a re-
placement for driver awareness.

Driver assistance systems
Lane Assist* Intr oduction The Lane Assist System helps the driver
st
ay in his/her l
ane within the physical lim-
its of the system. This function is not suita-
ble and is not designed to keep the vehicle
automatically in the lane.
Using the camera located in the windscreen,
the Lane Assist system detects the limits (lane
lines) dividing the lanes in which the vehicle is
travelling. If the vehicle gets too close to the
detected lane limits, the system alerts the
driver through a corrective motion of the
steering wheel. The driver can cancel the
steering corrective action at any time.
No warning is produced with the turn signals
activated, given that the Lane Assist system
understands that a lane change is required.
System limits
Use the Lane Assist system only on large,
well-maintained motorways and highways.
The system is not available under the follow-
ing conditions:

Driving
Note
If the lane departure warning with rear
cr oss tr
affic alert does not work as descri-
bed in this chapter, stop using it and con-
tact a specialised workshop. Control lamp
Fig. 188
Control lamp of the lane departure
w arning. Fig. 189
Control lamp of the lane departure
w arning. It lights up
It turns on once briefly: the lane departure warning is
activ at

ed and ready to operate, i.e. when activating
the system.
It lights up continuously: the lane departure warning
has det ect

ed a vehicle in the blind spot. Flashes
A vehicle has been detected in the adjacent lane and
the t urn signal has been engaged in the dir

ection of
the detected vehicle

Driver assistance systems
Lane departure warning (Side As-
sist) The lane departure warning uses radar sen-
sors t
o monit
or the areas behind the vehicle
››› page 9. The system does this by measur-
ing the vehicle's distance from other vehicles
and its speed differential. The lane departure
warning will not work at speeds of less than
approx. 15 km/h (9 mph).
The lane width is not detected individually,
but is rather pre-configured in the system.
Thus if you are driving in wide lanes or in be-
tween two lanes, the indications may be in-
correct. Furthermore, the system can detect
vehicles driving in the lane next to you (if
there are any), and can also detect station-
ary objects such as dividers, and thus give an
incorrect indication.
Light indication
The control lamp provides an indication on
the corresponding side regarding the traffic
situation behind the vehicle, if it is deemed to
be critical. The control lamp of the left-hand
side ››› Fig. 188
indicates the traffic situation
to the rear left of the vehicle, and the control
lamp of the right-hand side ››› Fig. 189
, indi-
cates the traffic situation to the rear right of
the vehicle. Keep the warning lamps zone of the lane de-
part
ur

e warning free of objects, adhesives or
the likes that may interfere with your visibility.
Lane assist Plus. The Lane Assist Plus function can be used by
activ
ating the

Lane Assist ››› page 261
and
Side Assist functions. In this case its functions
are expanded as described below.
If the driver initiates a lane change manoeu-
vre in a potential critical situation:

Driving
Fig. 191
Schematic representation:
 Sit
ua-
tion of an o vertaking in the centre lane and
then moving into the right-hand lane.  Indica-
tion of the lane departure warning in the con-
trol lamp on the right side. In the following situations, an indication will
be displ
ayed in the contr

ol lamp ››› Fig. 190
 (arrow) or
››› Fig. 191
 (arrow):

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.