2017 Seat Leon 5D brake

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

Operation
Automatic activation
 on
– activ
at
es the Automatic activa-
tion option ››› page 240.
 off – deactivates the Automatic ac-
tivation option ››› page 240.
Front volume*
Volume in the front and rear area.
Front sound settings/sharpness*
Frequency (tone) of the sound in the front
area.
Rear volume*
Volume in the rear area.
Rear sound settings/sharpness*
Frequency (tone) of the sound in the rear
area.
Adjust volume
With the parking aid switched on, the active
audio/video source volume will be reduced
to the intensity of the selected setting.
Error messages When the Parking Aid is activated or when it
i
s
sw

itched on, if a message reporting a Park- ing aid error is displayed on the instrument
panel, there i

s a fault in the system.
If the fault doesn't disappear before discon-
necting the ignition, next time that parking
aid is engaged in reverse, it will not be indi-
cated.
Parking System Plus*
If there is a fault in the parking aid system a
message will appear on the instrument panel
indicating the error. In addition the  key
LED will blink.
If there is a fault in a sensor, the symbol  is
displayed on the Easy Connect display in
front of/behind the vehicle. If a rear sensor is
faulty, only the obstacles in the areas A and
B are displayed
››
›
Fig. 225. If a front sensor
is faulty, only the obstacles in the areas C and
D are displayed.
Hav e the f
au

lt corrected by a specialised
workshop without delay.
Towing bracket In vehicles equipped with a towing bracket
dev
ic
e fr

om the factory, when the trailer is
connected electrically, the Parking Aid rear
sensors will not be activated when reverse
gear is engaged, when the selector lever is
turned to position R or when the button  is
pressed. Parking System Plus
The dist

ance to possible obstacles at the rear
of the vehicle will not be displayed on the
screen and nor will it be indicated by means
of audible sound signals.
The Easy Connect system screen will only dis-
play objects detected at the front, and the ve-
hicle's trajectory will be hidden.
Braking while manoeuvring function* 3 Only
valid with Parking System Plus
As
soon as an obstacle is detected while re-
versing, the braking while manoeuvring func-
tion activates the emergency braking. De-
pending on the equipment, the braking while
manoeuvring function can also activate
emergency braking while moving forwards.
The emergency braking function is used to
minimise collisions. Vehicle speed must not
be higher than 10 km/h.
The braked manoeuvre function is active or
inactive when the parking light is lit or off, re-
spectively. If an emergency braking is activa-
ted, the function will remain inactive until the
gear is changed.
The Parking System’s limitations apply.
The braking while manoeuvring function is
controlled in the Easy Connect system with
242

Operation
Note
● It i s
important to take great care and pay
special attention if you are not yet familiar
with the system.
● Rear assist will not be available if the vehi-
cle's
rear lid is open. Instructions for use
Fig. 230
On the rear bumper: location of the
r e
ar a

ssist camera. A camera on the rear bumper aids the driver
durin
g r
ev

erse parking or manoeuvring
››› Fig. 230. The camera image is viewed to-
gether with orientation lines projected by the
system on the Easy Connect system screen.
The bottom of the screen displays part of the
bumper corresponding to the number plate
area that will be used as reference by the
driver. Rear assist settings
Rear a

ssist offers the user the possibility to
change the image's brightness, contrast and
colour settings.
To change these settings:
● Park the vehicle in a safe place.
● Apply the parking brake.
● Switch the ignition on.
● If necessary, switch on the Easy Connect
syst
em.
● Engage reverse gear or turn the selector
lever t
o position R.
● Press the  function b
utton displayed on
the right of the image.
● Make the desired adjustments on the menu
by pr
essing the –/+ function buttons or by
moving the corresponding scroll button.
Necessary conditions for parking and ma-
noeuvring with the rear assist
The system should not be used in the follow-
ing cases:
● If the image displayed is not very reliable or
is di
storted, for example low visibility or dirty
lens.
● If the area behind the vehicle is not dis-
pla
yed very clearly or is incomplete.
● If the vehicle is heavily loaded at the rear. ●
If the pos
ition and installation angle of the
camera have been changed, e.g. after a rear-
end collision. Have the system checked by a
specialised workshop.
Familiarising yourself with the system
To familiarise yourself with the system, the
orientation lines and their function, SEAT rec-
ommends practising parking and manoeu-
vring with the rear assist in a place without
too much traffic or in a car park when there
are good weather and visibility conditions.
Cleaning the camera lens
Keep the camera lens clean and clear of snow
and ice:
● Moisten the lens using a normal alcohol-
based gl
ass cleaning product and clean the
lens with a dry cloth.
● Remove snow using a small brush.
● Use de-icing spray to remove any ice. CAUTION
● Never u se abr

asive cleaning products to
clean the camera lens.
● Do not use hot or warm water to remove ice
or snow fr
om the camera lens. Doing so could
damage the camera. 244

Operation
Hitching and connecting the trailer Fig. 243
Schematic diagram: assignment of
the pins of the trailer's electrical socket.
Key of the Schematic diagram ››› Fig. 243:
PinMeaning
1Left turn signal
2Rear fog light
3Earth, pins 1, 2, 4 to 8
4Right turn signal
5Rear light, right
6Brake lights
7Rear light, left
8Reverse lights
9Permanent live
10Cable without positive charge
11Earth, pin 10
Key of the Schematic diagram ››› Fig. 243:
PinMeaning
12Unassigned
13Earth, pin 9 Electrical socket for trailer
The v
ehic

le is fitted with a 13-pole power
socket for the electrical connection between
the trailer and the vehicle. If the system de-
tects that a trailer has been connected elec-
trically, the electrical equipment on the trailer
will receive voltage through this connection.
Pin 9 has a permanent live. This powers, for
example, the trailer's interior lighting. Pin 10
is only powered when the engine is running.
The charge wire (pin 10) charges, for exam-
ple, a caravan battery.
Pin 9 and 10 should not be connected to
each other to avoid discharging or damaging
the vehicle's battery.
The earth wires, pin 3, pin 11 and pin 13,
should never be connected to each other to
avoid overloading the electrical system.
If the trailer has a 7-contact connector , you
will need to use an adapter cable. In this case
the function corresponding to pin 10 will not
be available. Trailer maximum electricity consumption
Brake lights (total)84 Watts
Turn signal, on each side42 Watts
Side lights (total)100 Watts
Rear lights (total)42 Watts
Rear fog light42 Watts
Never exceed the values indicated!
Note
● If the r e

ar lights of the trailer are not cor-
rectly connected, the vehicle electronics may
be damaged.
● If the trailer absorbs excessive electric cur-
rent, the v
ehicle electronics may be dam-
aged.
● Never connect the trailer's electric system
directly t
o the electrical connections of the
tail lights or any other power sources. Only
use the connections intended for providing
electric current to the trailer. Ball coupling of towing bracket de-
v
ic
e* The ball coupling is provided with instruc-
tion
s
on fittin

g and removing the ball cou-
pling of the towing bracket.
252

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

Operation
Anti-theft alarm When the vehicle is locked, the alarm is trig-
ger
ed when the el
ectrical connection be-
tween vehicle and trailer is interrupted.
Always turn off the anti-theft alarm system
before connecting or disconnecting a trailer
››› page 133.
Conditions for the integration of a trailer in
the anti-theft alarm system.
● The vehicle is factory-equipped with an an-
ti-theft al

arm system and a towing bracket
device.
● The trailer is connected electrically to the
tow
ing vehicle by the trailer connector.
● The electrical system of the vehicle and the
trail
er are prepared for operation.
● The vehicle is locked with the ignition key
and the anti-theft al
arm system is activated.CAUTION
For technical reasons, trailers fitted with rear
LED lights ar

e not integrated in the anti-theft
alarm system. Driving tips
Driving with a trailer always requires extra
c
ar e. W

eight distribution
The weight di
stribution of a loaded trailer
with an unladen vehicle is very unfavourable.
However, if this cannot be avoided, drive ex-
tra slowly to allow for the unbalanced weight
distribution.
Speed
The stability of the vehicle and trailer is re-
duced with increasing speed. For this reason,
it is advisable not to drive at the maximum
permissible speed in an unfavourable road,
weather or wind conditions. This applies es-
pecially when driving downhill.
You should always reduce speed immediately
if the trailer shows the slightest sign of snak-
ing. Never try to stop the “snaking” by in-
creasing speed.
Always brake in due course. If the trailer has
an overrun brake, apply the brakes gently at
first and then, firmly. This will prevent the
jerking that can be caused by locking of trail-
er wheels. Select a low gear in due course
before going down a steep downhill. This en-
ables you to use the engine braking to slow
down the vehicle.
Reheating
At very high temperatures and during pro-
longed slopes, driving in a low gear and high
engine speed, always monitor the coolant
temperature gauge ››› page 119. Electronic stability control*
The ESC* sys
tem helps to stabilise the trailer
in case of skidding or rocking.
Retrofitting a towing bracket* Fig. 245
Attachment points for towing brack-
et . 254

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