2019 Seat Leon sensor

Safety
belt webbing, contact a specialised work-
shop for help with any special devices to
ensur e the optimum pr
otection of the seat
belt and airbag. SEAT recommends taking
your car in for technical service. Seat belt tensioners
How the seat belt tensioner works The seat belts for the occupants in the front
seats ar
e equipped with belt t
ensioners.
The belt t ensioners ar
e activ

ated by sensors,
although only in severe head-on, lateral and
rear-end collisions. This retracts and tightens
the seat belts, reducing the forward motion of
the occupants.
The belt pre-tensioners work in combination
with the airbag system. In case of overturn,
the pre-tensioners do not activate unless the
head airbags are deployed. Note

Fuses and bulbs
No. Consumers/Amps
6 Brake light sensor 7.5
7 Engine power supply 7.5/10
8 Lambda probe 10/15
9 Engine 10/20
10 Fuel pump control unit 15/20
11 PTC 40
12 PTC 40
13 Automatic gearbox pump 30
15 Horn 15
16 Fuel pump control unit 7.5/20
17 Engine control unit 7.5
18 Terminal 30 (positive refer-
ence) 7.5
19 Front windscreen washer 30
21 Automatic gearbox control unit 15/30
22 Engine control unit 7.5
23 Starter motor 30
24 PTC 40
31 Pressure pump 1.0 15
32 Front electronic differential 15 In-line fuse
Amperes
Rear power sockets 7.5 Note

Operation
Unlock and lock the vehicle with
K eyl
ess Access* Fig. 99
Keyless Access: proximity zones. Fig. 100
Door handle: sensor surfaces

Operation
on the door handle. The door should not
open.
The ne xt time the door can only be unl
ocked
via the r emot
e control or the lock cylinder.
The next time the door is locked/unlocked,
Keyless Access will be active again.
Convenience functions
To close all the electric windows and the sun-
roof using the comfort function, keep a fin-
ger for a few seconds on the locking sensor
surface

Operation
position  or , accor ding t
o the l e
v el of ex-
terior lighting.
When the light switch is in position , a light sensor automatically switches dipped beam
on and off (including the control and instru-
ment lighting) or the daytime running lights
depending on the level of exterior lighting.
Motorway light*
The motorway light is available on vehicles
equipped with full-LED lights.
The function is connected and disconnected
via the corresponding Easy Connect system
menu.

Driving
The area in front of and around the radar
sensor shoul d not be co
ver
ed with adhesiv
es,
additional or similar headlights, as this may
negatively affect Front Assist operation.
If the front of the vehicle is not properly re-
paired or structural modifications are made
to it, Front Assist operation may be affected.
SEAT recommends visiting a SEAT dealership
for this purpose. CAUTION
If you have the feeling that the radar sensor
is damaged or has lost its settings, discon-
nect the Front Assist. This will avoid possi-
bl e danger

ous situations caused by the in-
adequate operation of the system. If this
occurs have it adjusted.

Driving
Distance from the vehicle ahead. ACC is
not activ e and is not r
egulating your dis-
t ance
.
Vehicle ahead detected. ACC is active
and is regulating your speed.
Distance level 2 set by the driver.
ACC is active and is regulating your dis-
tance based on speed.
Speed programmed with the ACC Note
When the ACC is connected, the indica-
tions on the instrument panel screen may be concealed by warnings fr om other func-
tions, such as an incoming call. Radar sensors
Fig. 275
On the front bumper: radar sensors. 2
3
4
5
6 A radar sensor is fitted on the front bumper

Driving
Overheated brakes
If the br ak
es o v
erheat, f
or example on long
and steep descents, the ACC may be deacti-
vated temporarily. A message will be dis-
played stating this. In this case, adaptive
cruise control cannot be activated.
Cruise control may be reactivated once the
brake temperature has dropped. The mes-
sage will disappear. If the message ACC not
available remains on for quite a long time it
means that there is a fault. Contact a speci-
alised workshop. SEAT recommends visiting a
SEAT dealership. WARNING
If you do not pay attention to the Press
the brake message, the vehicle may mo v

e
and crash into the vehicle ahead. Before
driving off again, check that the road is
clear. The radar sensor may not detect ob-
stacles on the road. This could cause an
accident and serious injuries. If necessary,
apply the brake. Lane Assist*
Intr oduction Fig. 281
On the windscreen: field of vision of
the L ane Assist syst
em. Using the camera located in the windscreen,
the L
ane Assist syst
em detects the possibl
e
lines dividing the l

anes. When the vehicle in-
voluntarily approaches a dividing line it has
detected, the system notifies the driver with a
corrective steering movement. The purpose is
not only to warn the driver, but also to keep
the vehicle inside the lane. This movement
can be over-regulated 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. Control lamp