2017 Seat Leon 5D headlights

Lights and visibility
vehicle lighting system, for example, if addi-
tiona
l
headlights are installed. CAUTION
To avoid affecting the operation of the sys-
t em, t ak

e the following points into considera-
tion:
● Clean the field of vision of the camera regu-
larly and m
ake sure it is free of snow and ice.
● Do not cover the field of vision of the cam-
era.
● Check

that the windscreen is not damaged
in the area of
the field of vision of the camera. Note
Main beam and headlight flasher can be
turned on and off m

anually at any time with
the turn signal and main beam lever
››› page 141. Fog lights
Fig. 142
Dash panel: light control. The warning lamps
 or  also sho
w
, on the
light switch or instrument panel, when the
fog lights are on.
● Switching on front fog lights* : pul
l the
light switch to the first point ››› Fig. 142 1 ,
fr om po
s
itions ,  or .
● Switching on the rear fog light : com-
pl

etely pull the light switch 2 from position
,  or  .
● To sw
itch off the fog lights, press the light
switc
h or turn it to position . Note
The rear fog light can dazzle drivers behind
you. Y

ou should use the rear fog light only
when visibility is very poor. For this reason, if
you exceed approximately 60 km/h (38 mph),
the instrument panel will display the follow-
ing warming: Switch off the fog light! Cornering lights*
1) When turning slowly or on very tight bends,
the c
ornerin
g lights

are activated automati-
cally. The cornering lights may be integrated
in the fog lights and are switched on only at
speeds of less than 40 km/h (25 mph).
When reverse gear is engaged, the cornering
lights on both sides of the vehicle switch on,
in order to better illuminate the area for park-
ing.
Function “Coming home” This function may be connected/disconnec-
t
ed thr
ough the r

adio menu. The “Coming
Home” and/or “Leaving Home” delay time
may also be set (default: 30 sec). »1)
This function is not available on vehicles equipped
with f u

ll-LED headlights and bulb fog lights. 143
Technical data
Advice
Operation
Emergencies
Safety

OperationVehicle with
halogen
headlightsIn the “Coming Home” function, the day-
time running lights (DRL), the rear side
lights and the licence plate lights are
turned on.
Vehicle with
full-LED
headlightsIn the “Coming Home” function, the dip-
ped beams and the daytime running
lights (DRL), the rear side lights and the
licence plate lights are switched on.
Automatic* activation of “Coming Home”
For
v

ehicles with a light and rain sensor (rota-
ry light switch in position ).
● Switch off the engine and remove the key
from the ignition w ith the r

otary light switch
in position  ›››
 page 30.
● The automatic “Coming Home” function is
only activ
e when the light sensor detects
darkness.
● When the car door is opened, the “Coming
Home” lighting come
s on.
Manual “Coming Home” activation
For vehicles with a light and rain sensor (rota-
ry light switch without position ).
● Switch off the engine and remove the key
from the ignition.
● Activ

ate the headlight flashers for approxi-
mately
1 second.
● Activated for any position of the rotary light
switc
h. ●
When the car door is
opened, the “Coming
Home” lighting comes on. The headlights are
turned off 60 seconds after the vehicle door
is opened.
Deactivation
● If no door has been closed, they go out au-
tomatic
ally after 60 seconds.
● After the last door has been closed, the
headlights
will be switched off after the
“Coming Home” delay (as established in the
radio menu) has elapsed.
● On turning the light switch to position 
›››
 page 30.
● When the ignition is switched on (when
star
ting the engine).
Function “Leaving Home” The “Leaving Home” function is only availa-
b
l
e f

or vehicles with a light and rain sensor
(rotary light switch in position ).
This function may be connected/disconnec-
ted through the radio menu. The “Leaving
Home” function switch-off delay may also be
set (default: 30 sec).
Vehicle with
halogen
headlightsIn the “Leaving Home” function, the day-
time running lights (DRL), the rear side
lights and the licence plate lights are
switched on.
Vehicle with
full-LED
headlightsIn the “Leaving Home” function, the dip-
ped beams, the daytime running lights
(DRL), the rear side lights and the li-
cence plate lights are switched on. Activation
● When the vehicle is unlocked using the re-
mote c ontr

ol.
● The “Leaving Home” function is only activa-
ted when the rot
ary light switch is in position
 and the light sensor detects darkness.
Deactivation
● When the “Leaving Home” delay period
ends (def

ault: 30 sec).
● When the vehicle is locked using the re-
mote contr
ol.
● When the light control is switched into a
position other th
an .
● With the ignition is switched on.
144

Lights and visibility
Hazard warning lights Fig. 143
Dash panel: switch for hazard warn-
in g lights. Read the additional information carefully
› ›
›
 page 31
The hazard warning lights are used to draw
the attention of other road users to your vehi-
cle in emergencies.
If your vehicle breaks down:
1. Park your vehicle at a safe distance from movin
g traffic.
2. Press the button to switch on the hazard warning lights
››› .
3. Switch the ignition off.
4. Apply the handbrake.
5. For a manual gearbox, engage 1st gear; for an aut
om

atic gearbox, move the gear
lever to P. 6. Use the warning triangle to draw the atten-
tion of other ro
ad users to your vehicle.
7. Always take the vehicle key with you when you le
ave 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 ig-
nition 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 be-
hind. 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
● The risk of

an accident increases if your ve-
hicle breaks down. Always use the hazard
warning lights and a warning triangle to draw
the attention of other road users to your sta-
tionary vehicle.
● Due to the high temperatures that the cata-
lytic con
verter can reach, never park in an
area where the catalytic converter could come into contact with highly inflammable materi-
al
s, f

or example dry grass or spilt petrol. This
could start a fire. Note
● The b atter

y will run down if the hazard
warning lights are left on for a long time,
even if the ignition is switched off.
● The use of the hazard warning lights de-
scribed her
e is subject to the relevant statu-
tory requirements. Parking lights
 When the parking light is switched on, (right
or l
ef
t

turn signal), the front side light and
the rear light on the corresponding side of
the vehicle stay lit. The parking lights can on-
ly be activated with the ignition switched off
and the turn signal and main beam lever in
the central position, before being triggered.
Parking light on both sides With the ignition switched off and the light
sw
it
c

h in position , when locking the vehi-
cle from the outside, the parking lights on
both sides of the vehicle light up. In doing
so, only the side lights of both headlights
light up, and additionally the tail lights will
do so partially.
145
Technical data
Advice
Operation
Emergencies
Safety

Operation
Motorway light* The motorway light is available on vehicles
equipped w
ith f
ull-LED lights.
The function is connected/disconnected via
the corresponding Easy Connect system
menu.
● Activation: when going abo
ve 110 km/h
(68 mph) for more than 30 seconds, the dip-
ped beam raises slightly to increase the driv-
er's visibility distance.
● Deactivation: when reduc in
g the speed of
the car below 100 km/h (62 mph), the dip-
ped beam returns to its normal position.
Driving abroad The light beam of the dipped beam lights is
a
symmetric: the s
ide of

the road on which
you are driving is lit more intensely.
When a car that is manufactured in a country
that drives on the right travels to a country
that drives on the left (or vice versa), it is nor-
mally necessary to cover part of the headlight
bulbs with stickers or to change the adjust-
ment of the headlights to avoid dazzling oth-
er drivers.
In such cases, the regulations specify certain
light values that must be complied with for
designated points of the light distribution.
This is known as “Tourist light”. The light distribution that the halogen and
ful

l-LED headlights of the SEAT Leon range
have allows the specific “tourist light” values
to be met without the need for stickers or
changes in the settings. Note
“Tourist light” is only allowed temporarily. If
you ar e p

lanning a long stay in a country that
drives on the other side, you should take the
vehicle to an Authorised Technical Service to
change the headlights. Headlight range control
Fig. 144
Next to the steering wheel: Head-
light ran

ge control The lights range control adapts according to
the
v
alue of

the headlight beam and the ve-
hicle load status. This offers the driver opti-
mum visibility and the headlights do not daz-
zle oncoming drivers ››› .The headlights can only be adjusted when
the dip
ped be
am i

s switched on.
To reset, turn switch ››› Fig. 144:
ValueVehicle load status a) 
Two front occupants, luggage compart-
ment empty

All seats occupied, luggage compartment
empty

All seats occupied, luggage compartment
full. With trailer and minimum drawbar
load.

Driver only, luggage compartment full With
trailer and maximum drawbar load.
a)
If the vehicle load does not correspond to those shown in the
table, it is possible to select intermediary positions.
OR:
Using the Easy Connect system, by means of
the  button and the function button SET-
TINGS > Lights > Headlight height
adjustment
› ›
›

 page 33).
Setting 0Two front occupants, luggage compart-
ment empty
Setting 1All seats occupied, luggage compart-
ment empty
Setting 2All seats occupied, luggage compart-
ment full. With trailer and minimum
drawbar load.146

Lights and visibility
●
In icy c ondition
s, always check that the
wiper blades are not frozen to the glass be-
fore using the wipers. In cold weather, it may
help to leave the vehicle parked with the wip-
ers in service position ›››
 page 72. Note
● The w inds

creen and window wipers only
function when the ignition is switched on and
the bonnet or rear lid, respectively, are
closed.
● The interval wipe speed varies according to
the vehic
le speed. The faster the vehicle is
moving, the more often the windscreen is
cleaned.
● The rear wiper is automatically switched on
when the winds
creen wiper is on and the car
is in reverse gear. Windscreen wiper functions
Windscreen wiper performance in different sit-
uations
If the vehicle is at a
standstillThe activated position provision-
ally changes to the previous posi-
tion.
During automatic
wipe
The air conditioner comes on for
approximately 30 seconds in air
recirculation mode to prevent the
smell of the windscreen washer
fluid entering the inside the vehi-
cle.
Windscreen wiper performance in different sit-
uations
For the interval wipe
Intervals between wipes depend
on the vehicle's speed. The high-
er the vehicle speed the shorter
the intervals. Heated windscreen washer jets
The heatin
g on

ly thaws the frozen jets, it
does not thaw the water in the washer hoses.
When the ignition is switched on the heated
windscreen washer jets automatically adjust
the heat depending on the ambient tempera-
ture.
Headlight wash/wipe system
The headlight washers/wipers clean the
headlight lenses.
After the ignition is switched on, the first and
every fifth time the windscreen washer is
switched on, the headlights are also washed.
Therefore, the windscreen wiper lever should
be pulled towards the steering wheel when
the dipped beam or main beam are on. Any
incrusted dirt (such as insects) should be
cleaned regularly (e.g. when refuelling).
To ensure the headlight washers work cor-
rectly in winter, any snow which has got into
the bumper jet supports should be cleaned
away. If necessary, remove snow with an anti-
icing spray. Note
The wiper will try to wipe away any obstacles
that ar

e on the windscreen. The wiper will
stop moving if the obstacle blocks its path.
Remove the obstacle and switch the wiper
back on again. 149
Technical data
Advice
Operation
Emergencies
Safety

Operation
●
The Front As
sist does not react to animals
or vehicles crossing your path or approaching
head-on down the same lane.
● The Front Assist does not react to pedes-
trians
walking in the same direction or ap-
proaching head-on down the same lane.
● The driver must always be ready to take
over the c
ontrol of the vehicle.
● When the Front Assist causes a braking,
the brake ped
al is “harder”.
● Automatic interventions by the Front Assist
on the brake
s may be interrupted by pressing
the clutch, accelerator or moving the wheel. Note
● When the Front As

sist is connected, the in-
dications on the instrument panel screen may
be concealed by warnings from other func-
tions, such as an incoming call.
● When the Front Assist causes a braking,
the brake ped
al is “harder”.
● Automatic interventions by the Front Assist
on the brake
s may be interrupted by pressing
the clutch, accelerator or moving the wheel.
● The Front Assist may brake the vehicle until
it st
ops completely. However, the brake sys-
tem does not halt the vehicle permanently.
Use the foot brake!
● If the Front Assist does not work as descri-
bed in this c
hapter (e.g. in intervenes several
times unnecessarily), switch it off. Have the
system checked by a specialised workshop.
SEAT recommends visiting a SEAT dealership. Radar sensor
Fig. 205
On the front bumper: radar sensor. A radar sensor is installed on the front bump-
er t
o det
ermine the tr

affic situation
››› Fig. 205 1 .
The r a
d

ar sensor's visibility may be impaired
by dirt, mud or snow, or by environmental in-
fluences such as rain or mist. In this case, the
Front Assist does not work. The instrument
panel displays the following message:
Front Assist: No sensor vision! If
necessary clean the radar sensor ››› .
When the r a
d

ar sensor begins to operate
properly again, the Front Assist will automati-
cally be available again. The message will
disappear from the instrument panel display.
Front Assist operation may be affected by a
strong radar reverse reflection. This may oc-
cur, for example, in a closed car park or due to the presence of metallic objects (e.g. rails
on the roa

d or sheets used in road works).
The area in front of and around the radar sen-
sor should not be covered with adhesives,
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, for example if the suspension is low-
ered, Front Assist operation may be affected.
SEAT recommends visiting a SEAT dealership
for this purpose. CAUTION
If you have the sensation that the radar sen-
sor is d

amaged or has lost its settings, dis-
connect the Front Assist. This will avoid pos-
sible dangerous situations caused by a sys-
tem malfunction. If this occurs have it adjus-
ted.
● The sensor may become damaged or lose
its settin
gs when knocked, for example, dur-
ing a parking manoeuvre. This may compro-
mise the system's efficacy or disconnect it.
● Repairs to the radar sensor require special-
ist
knowledge and special tools. SEAT recom-
mends visiting a SEAT dealership for this pur-
pose.
● A registration plate or plate holder on the
front th
at is larger than the space for the reg-
istration plate, or a registration plate that is
curved or warped can cause the radar to mal-
function. 212

Driver assistance systems
Radar sensor Fig. 210
On the front bumper: radar sensor. A radar sensor is installed on the front bump-
er t
o det
ermine the tr
affic situation
››› Fig. 210 1 .
The r a
d

ar sensor's visibility may be impaired
by dirt, mud or snow, or by environmental in-
fluences such as rain or mist. In this case the
adaptive cruise control (ACC) does not work.
The instrument panel displays the following
message: ACC: No sensor vision! If
necessary, clean the sensor ››› .
When the r a
d

ar sensor begins to operate
properly again, the ACC will automatically be
available again. The message on the instru-
ment panel screen will switch off and the ACC
will be reactivated again.
ACC operation may be affected by a strong ra-
dar reverse reflection. This may occur, for ex-
ample, in a closed car park or due to the presence of metallic objects (e.g. rails on the
roa

d or sheets used in road works).
The area in front of and around the radar sen-
sor should not be covered with adhesives,
additional or similar headlights, as this may
negatively affect ACC operation.
If the front of the vehicle is not properly re-
paired or structural modifications are made
to it, for example, if the suspension is low-
ered, ACC operation may be affected. In this
scenario, SEAT recommends visiting a SEAT
dealership. CAUTION
If you have the sensation that the radar sen-
sor is d

amaged or has lost its settings, dis-
connect the ACC. This will avoid possible
damage. If this occurs have it adjusted.
● The sensor may become damaged or lose
its settin
gs when knocked, for example, dur-
ing a parking manoeuvre. This may compro-
mise the system's efficacy or disconnect it.
● Repairs to the radar sensor require special-
ist
knowledge and special tools. SEAT recom-
mends visiting a SEAT dealership for this pur-
pose.
● A registration plate or plate holder on the
front th
at is larger than the space for the reg-
istration plate, or a registration plate that is
curved or warped can cause the radar to mal-
function. ●
Cle

an away the snow with a brush and the
ice preferably with a solvent-free de-icer
spray. 217
Technical data
Advice
Operation
Emergencies
Safety

Towing bracket device
WARNING
The towing bracket ball coupling must be
st or
ed securely in the luggage compartment
to prevent them being flung through the vehi-
cle and causing injury. Note
● By l

aw, the ball coupling must be removed
if a trailer is not being towed if it obscures
the number plate. Driving with a trailer
Fig. 244
Turn the 13-pin connector. Before driving
●
Grip the 13-pin connector at area A and
r emo
v

e it in the direction of the arrow
››› Fig. 244.
● Remove the protective cover 5
› ››
Fig. 232
up w

ards.
After driving
● Grip the 13-pin connector at area A and
in ser
t

it in the opposite direction to the arrow
››› Fig. 244.
● Fit the protective cover 5
› ›
› Fig. 232
on
the ball coupling.
Safety lug
The safety lug B
› ›
› Fig. 244
is used to hook
up the trailer's retainer cable.
On hooking it up to the safety lug, the retain-
er cable should have slack in all the trailer
positions with respect to the vehicle (sharp
bends, reverse gear, etc.).
Headlights
The front part of the vehicle may be raised
when the trailer is connected and the light
may dazzle the rest of the traffic.
Adapt the height of the headlights using the
headlight range rotary adjuster 1)
. WARNING
● Never u se the s

afety lug to tow!
● Adjust your speed to suit the road and traf-
fic condition
s.
● All work on the electrical system must be
carried out on
ly by specialised workshops.
● Never connect the trailer's electric system
to the electric
al connections of the rear lights
or any other power sources.
● After hooking up the trailer and connecting
the socket, c
heck that all the trailer's rear
lights are working properly. Note
● If ther e i

s any fault in the trailer's lighting,
check the fuses in the instrument panel fuse
box ›››
 page 63.
● The contact between the retainer cable and
the safety
lug may give rise to mechanical
wear in the lug's surface protection. This
wear will not prevent the safety lug from op-
erating properly or cause any fault and is ex-
cluded from the warranty.
● When connecting and disconnecting the
trail
er, the towing vehicle's handbrake
should be applied.
● When the tow hitch ball has not been fitted,
the socket
should remain concealed in its
housing on the bumper. 1)
This does not apply for vehicles with bi-xenon
hea dlights.
253
Technical data
Advice
Operation
Emergencies
Safety