2017 Seat Leon SC warning lights

Operation
Indications on the display, warning
and c ontr
o
l lampsFig. 209
On the instrument panel display: (A)
A C
C

inactive (Standby). (B) ACC active. Status display
Indic
ation
s

on the display ››› Fig. 209:
Vehicle ahead detected. ACC is not active
and is not regulating your speed.
Distance from the vehicle ahead. ACC is
not active and is not regulating your dis-
tance.
1 2 Vehicle ahead detected. ACC is active and
i
s
r

egulating your speed.
Distance level 2 set by the driver.
ACC is active and is regulating your dis-
tance based on speed.
Warning and control lamps
››› in Warning and control lamps on
p ag
e 119

. 
The speed reduction by the ACC to
maintain the distance from the vehi-
cle in front is not sufficient.
Brake! apply the foot brake! Driver intervention prompt.

The ACC is not currently available.
a)
With the vehicle stationary, switch off the engine and
start it up again. Check the SEAT badge area on the front
››› Fig. 210 (in case it is dirty or icy or it has been hit). If
it is still unavailable, refer to a specialised workshop to
have the system inspected.
a) The symbol on the instrument panels with colour display is in
colour. 
The ACC is active.
No vehicle is detected in front. The programmed speed
remains constant.3
4
5 
If the symbol is white: the ACC is ac-
tive.
A vehicle in front has been detected. The ACC adjusts
speed and distance from the vehicle in front.

If the symbol is grey: ACC is inactive
(Standby)
The system is switched on, but is not adjusting.

It lights up green
The ACC is active.
Some warning and control lamps will light up
briefly
when the ignition i
s

switched on to
check certain functions. They will switch off
after a few seconds. WARNING
Observe the safety warnings ›››
in Warning
and contr o
l lamps on page 119. Note
When the ACC is connected, the indications
on the ins trument

panel screen may be con-
cealed by warnings from other functions,
such as an incoming call. 216

Operation
Special driving situations Fig. 214
(A) Vehicle on a bend. (B) Motorcy-
c li
s
t ahead out of range of the radar sensor. Fig. 215
(C) Vehicle changing lanes. (D) One
v ehic
l

e turning and another stationary. The adaptive cruise control (ACC) has certain
ph
y
s

ical limitations inherent in the system.
For example, certain reactions of the ACC, in
certain circumstances, may be unexpected or
come late from the driver's point of view. So
pay attention in order to intervene if necessa-
ry.
For example, the following traffic situations
call for the utmost attention:
Starting driving after a stopping phase (only
vehicles with automatic gearbox)
After a stopping phase, the ACC may begin
driving automatically when the vehicle in
front drives off ››› .When the ACC halts the vehicle (e.g. traffic
j
am), the in
s

trument panel display shows the
ACC ready to start message. If the ve-
hicle ahead drives off again, the ACC will also
do so automatically.
If the vehicle ahead does not drive off again,
the vehicle can be kept indefinitely in the
ACC ready to start status by operating
the third lever repeatedly towards position 2
› ››
Fig. 211
or b
y pressing the brake pedal.
If the Press the brake message is shown
on the instrument panel, press the brake. If
you do not, an acoustic warning will be heard
and the ACC will switch to inactive mode
(Standby). At this point, the vehicle may be-
gin to move towards the stopped vehicle
ahead ››› .
Ov er
t

aking
When the turn signal lights up before the ve-
hicle begins an overtaking manoeuvre, the
ACC accelerates the vehicle automatically
and thus reduces the distance from the vehi-
cle in front.
When the vehicle enters the overtaking lane,
if the ACC does not detect another vehicle in
front, it accelerates until it reaches the pro-
grammed speed and maintains it.
System acceleration can be interrupted at
any time by pressing the brake or moving the
third lever backwards ››› page 218.
222

Driver assistance systems
Fig. 218
On the instrument panel display: In-
dic ation on the Lane As
s
ist system display
(example 2). Status display
The sy s
t

em is active, but not available,
either because the minimum speed has
not been reached or because the lane
lines are not recognised ››› Fig. 217 A.
The system is active and available, both
lane lines are recognised. The steering
angle is not being corrected at this mo-
ment ››› Fig. 217 B.
–
– The system is operational, the highligh-
ted line
A indicates that there was a
ri sk
of

involuntarily crossing the lane
line and that the steering is being adjus-
ted to correct the angle ››› Fig. 218 C.
The two highlighted lines A light up si-
mu lt
aneou

sly when both lane lines are
recognised and the Lane Assist function
is active ››› Fig. 218 D.
Control lamps 
It lights up yellow: Lane Assist active
but not available.
The system can not accurately recognise the lane.
Please see page 226, the Lane Assist system is not
available (the control lamp is lit up yellow). 
It lights up green
Lane Assist system active and available.
WARNING
Observe the safety warnings ›››
in Warning
and contr o
l lamps on page 119. Operating mode
Steering wheel vibration
The f
ol

lowing situations can cause vibration
in the steering wheel and require the driver
to take active control of driving: –
– ●
When the steerin
g angle assist value re-
quired to keep the vehicle in the lane is high-
er than the system’s maximum operating val-
ue.
● If the system ceases to display the lane
lines whi
le assisting with steering.
Switching the Lane Assist system on or off
Through the Easy Connect system
● Press the Easy Connect button  ●
Press the S
ET
TINGS function button
● Press the function button Driv
er a
s
sistance to
open the menu.
OR: U s
in
g the Driving Assist button on
the turn signal lever* ›››
 page 37.
Lane Assist with Lane Centring Guide
The Lane Centring Guide function is in-
tended to keep the vehicle in the centre of
the lane.
If the driver has a tendency to veer slightly off
centre in the lane, the system adapts to driv-
er preferences.
The Lane Centring Guide function is ac-
tivated/deactivated in the Easy Connect sys-
tem using the  button and the
S
ET
TINGS function button
›
››

page 120. »
225
Technical data
Advice
Operation
Emergencies
Safety

Operation
● When mor e att
ention i
s required by the
driver.
● When driving in a very sporty style.
● In adverse weather conditions, e.g. in case
of sno
w or heavy rain.
● When driving on roads in poor condition.
● In sections with roadworks.
● In city journeys. WARNING
The smart technology incorporated into Traf-
fic Jam As s

ist cannot defy the laws of phys-
ics; it only works within the limits of the sys-
tem. Accidents and severe injury may occur if
Traffic Jam Assist is used negligently or invol-
untarily. The system is not a replacement for
driver awareness.
● Adapt your speed and safe distance to the
vehicl
e in front of you at all times to suit the
visibility, weather, road and traffic condi-
tions.
● Do not use Traffic Jam Assist in city jour-
neys.
● Do not u

se Traffic Jam Assist if there is poor
vis
ibility, for example, in case of snow, ice,
rain or loose gravel, or on steep or slippery
sections or flooded roads.
● Do not use Traffic Jam Assist offroad or on
roa
ds where the surface is not firm. Traffic
Jam Assist has been designed for use on
paved roads only. ●
Traffic

Jam Assist does not react to people
or animals or vehicles crossing your path or
that approach you head-on down the same
lane.
● If Traffic Jam Assist does not reduce speed
sufficiently
, brake the vehicle immediately by
applying the pedal.
● If the vehicle continues to move when you
wish it
to stop after a driver intervention
prompt, brake the vehicle by applying the
pedal.
● If driver intervention is requested on the
da
sh panel display, immediately resume con-
trol of the vehicle.
● Keep your hands on the wheel at all times
to be re
ady to intervene in the steering at any
time. The driver is always responsible for
keeping the vehicle in its own lane.
● Always be prepared to take charge of driv-
ing (acc
elerating or braking) yourself. Note
● If T

raffic Jam Assist does not work as de-
scribed in this chapter, stop using it and con-
tact a specialised workshop.
● If the system is faulty, take it to a special-
ised work
shop and have it checked. Emergency Assist
D e
s

cription and operation Emergency Assist detects whether there is in-
activity
b

y the driver and can automatically
keep the car within the lane and stop it alto-
gether if necessary. This way the system can
actively help avoid an accident.
Emergency Assist is an additional function of
Lane Assist ››› page 224 and combines Lane
Assist functions with Adaptive Cruise Control
(ACC) ›››
page 214. Therefore, it is essential
that you read these two chapters carefully
and note the limitations of the systems and
the information about them.
Operation of Emergency Assist
Emergency Assist detects when the driver
ceases to perform any activity and repeatedly
requests that he/she regain active control of
the vehicle, through the use of optical and
acoustic warnings and by applying the
brakes.
If the driver continues to do nothing, the sys-
tem automatically takes over the accelerator,
brakes and steering in order to brake the ve-
hicle and keep it in its lane ››› . When the
Emer g
ency

Assist is actively adjusting, the
hazard warning lights come on ›››
page 145
and the vehicle makes slight zigzag move-
ments in the lane in order to warn other driv-
ers.
228

Driver assistance systems
If the remaining braking distance is suffi-
c ient, if
nec
essary the system slows down the
vehicle until it stops completely and auto-
matically switches on the electronic parking
brake ››› page 183.
Switching the Emergency Assist on and off
The Emergency Assist is switched on auto-
matically when the Lane Assist is switched on
››› page 224.
Technical requirements for using the Emer-
gency Assist
● The adaptive cruise control (ACC) must be
switc
hed on ››› page 214.
● The Lane Assist must be switched on
›››
page 224.
● The selector lever must be in the D/S posi-
tion or in the
Tiptronic selector gate.
● The system must have detected a lane sep-
aration line on both side
s of the vehicle
››› Fig. 218.
The following conditions may cause the
Emergency Assist not to react or to switch off
automatically:
● If the driver accelerates, brakes or moves
the steerin
g wheel.
● If any of the conditions mentioned in
›››
page 229, Technical requirements for us-
ing the Emergency Assist are not fulfilled.●
If any
of the conditions required for opera-
tion of the Lane Assist are not met
››› page 224.
● If any of the conditions necessary for the
adaptiv
e cruise control (ACC) to work are no
longer fulfilled ››› page 214. WARNING
The smart technology incorporated into the
Emerg ency

Assist cannot overcome the limits
imposed by the laws of physics; it only works
within the limits of the system. The driver is
responsible for driving the vehicle.
● Adapt your speed and safe distance to the
vehicl
e in front of you at all times to suit the
visibility, weather, road and traffic condi-
tions.
● Keep your hands on the wheel at all times
to be re
ady to intervene in the steering at any
time.
● The Emergency Assist alone cannot always
avoid acc
idents or serious injuries.
● If the operation of the Emergency Assist is
impaired, f
or example if the radar sensor of
the adaptive cruise control (ACC) or the Lane
Assist camera are covered or have lost their
settings, the system may intervene inoppor-
tunely in braking or in steering.
● The Emergency Assist does not react to
people or anim
al or vehicles crossing your
path or which approach you head-on in the
same lane. WARNING
If the Emergency Assist Intervenes inoppor-
tu nely

, serious accidents and injuries may oc-
cur.
● If the Emergency Assist does not operate
properly, sw
itch off the Lane Assist
››› page 224. Doing so will also switch off the
Emergency Assist.
● Have the system checked by a specialised
workshop
. SEAT recommends visiting a SEAT
dealership for this. Note
● Autom atic

interventions by the Emergency
Assist on the brakes may be interrupted by
pressing the accelerator or brake or by mov-
ing the wheel.
● Hazard warning lights that come on auto-
matica
lly can be switched off by pressing the
accelerator or the break, moving the steering
wheel or pressing the hazard warning light
switch.
● If this occurs, the Emergency Assist may
deceler
ate the vehicle until it comes to a com-
plete stop.
● When the Emergency Assist is activated, it
is on
ly available again after the ignition has
been switched off and back on again. 229
Technical data
Advice
Operation
Emergencies
Safety

Towing bracket device
Trailer towing Wh at
do
you need to bear in mind
when towing a trailer? Your vehicle may be used to tow a trailer
when fitted w
ith the c

orrect equipment.
If you wish to retrofit a towing bracket, con-
sult ››› page 254.
Connectors
Your vehicle is fitted with a 13-pin connector
for the electrical connection between the
trailer and the vehicle.
If the trailer has a 7-pin plug you will need to
use an adapter cable. It is available at any
Technical Service.
Trailer weight/drawbar load
Never exceed the authorised trailer weight. If
you do not load the trailer up to the maxi-
mum permitted trailer weight, you can then
climb correspondingly steeper slopes.
The maximum trailer weights listed are only
applicable for altitudes up to 1000 m above
sea level. With increasing altitude the engine
power and therefore the vehicle climbing
ability are impaired because of the reduced
air density. The maximum trailer weight has
to be reduced accordingly. The weight of the
vehicle and trailer combination must be re- duced by 10% for every further 1000 m (or
par
t

thereof). The gross combination weight
is the actual weight of the laden vehicle plus
the actual weight of the laden trailer. When
possible, operate the trailer with the maxi-
mum permitted drawbar load on the ball joint
of the towing bracket, but do not exceed the
specified limit.
The figures for trailer weights and drawbar
loads that are given on the data plate of the
towing bracket are for certification purposes
only. The correct towing bracket figures for
your specific model, which may be lower than
these figures, are given in the vehicle docu-
mentation or on ››› page 289, Technical
specifications.
Distributing the load
Distribute loads in the trailer so that heavy
objects are as near to the axle as possible.
Loads carried in the trailer must be secured
to prevent them moving.
Tyre pressure
The maximum permissible tyre pressure val-
ues are shown on the sticker on the back of
the left front door frame. Set the tyre pres-
sure of the trailer tyres in accordance with the
trailer manufacturer's recommendations. Exterior mirrors
Check whether
you can see enough of the
road behind the trailer with the standard rear
vision mirrors. If this is not the case, you
should have additional exterior mirrors fitted.
Both exterior mirrors should be mounted on
hinged extension brackets. Adjust the mirrors
to give sufficient vision to the rear.
Tow rope
Always use a cable between the vehicle and
the trailer ››› page 252.
Trailer rear lights
The trailer's rear lights should comply with
the statutory safety regulations ››› page 252. WARNING
Never transport people in a trailer. This could
re s

ult in fatal accidents. Note
● To w

ing a trailer places additional demands
on the vehicle. We recommend additional
services between the normal inspection inter-
vals if the vehicle is used frequently for tow-
ing a trailer.
● Find out whether special regulations apply
to to
wing a trailer in your country. 251
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

Advice
Automatic car washes
B ef
or
e going through a car wash, be sure to
take the usual precautions (closing the win-
dows, roof and rear-view mirrors). If the vehi-
cle has special accessories such as spoilers
or a roof rack or two-way radio aerial, etc., it
is advisable to consult the car wash tunnel
operator.
It is best to use a car wash without revolving
bristles if possible.
Washing the vehicle with a high pressure
cleaner
When washing the vehicle with a high-pres-
sure cleaner, always follow the operating in-
structions for the equipment. This applies
particularly to the operating pressure and the
spraying distance. Do not hold the nozzle too
close to soft materials such as rubber hoses
or seals. The same applies to the parking aid
sensors*, which are located in the rear bump-
er.
Do not use a nozzle that sprays the water out
in a direct stream or one that has a rotating
jet for forcing off dirt.
Factory-fitted adhesive sheets
The following indications should be taken in-
to account to avoid damaging adhesive
sheets:
● Do not use high pressure cleaners. ●
Do not use s crapers to remove ice or snow
from the sheets.
● Do not polish the adhesive sheets.
● Do not use dirty cloths or sponges.
● It is preferable to wash them with a soft
spong
e and gentle neutral soap.
Washing the car by hand
When washing the car by hand, use plenty of
water to soften the dirt first, and rinse off as
well as possible.
Then clean the vehicle with a soft sponge,
glove or brush using only slight pressure.
You should start on the roof and work down.
Special car soap should only be used for very
persistent dirt.
Rinse the sponge or glove thoroughly and of-
ten.
Wheels, sills and similar should be cleaned
last. Use a second sponge for this. WARNING
● The v ehic

le should only be washed with the
ignition switched off. Failure to follow this in-
struction could result in an accident.
● Do not clean the underside of chassis, the
inside of
wheel arches or wheel trims without
protecting your hands and arms. You may cut
yourself on sharp-edged metal parts. Other-
wise, there is a risk of sustaining cuts. ●
When wa shin

g the car during the winter
season: water and ice in the brake system
can reduce braking effectiveness: risk of acci-
dent! CAUTION
● Do not wa

sh the vehicle in direct sunlight –
otherwise the paint can be damaged.
● Do not use sponges, abrasive household
spong
es or similar to clean insect remains.
This could damage the surface.
● Clean off stubborn dirt (insects, etc.) from
the headlight
s at regular intervals, for in-
stance when filling the fuel tank. The head-
lights should only be washed with water, do
not wipe them with a dry cloth or sponge. It
is best to use soapy water.
● Never wash tyres with a jet that sprays the
water out
in a direct stream. This could dam-
age the tyres even if the spray is kept at a
distance and only used for a very short time.
● Before washing the vehicle in an automatic
car wa
sh, please make sure to retract the ex-
terior mirrors to prevent them from being
damaged. Electrically retractable exterior
mirrors must not be folded in or out by hand,
always use the electrical power control. CAUTION
● Bef or

e washing the vehicle in an automatic
car wash, please proceed as follows to lock
the wiper arms so that they are not moved to-
wards the top of the windscreen: 258