2016 Seat Leon 5D cruise control

Operation
Function to avoid overtaking on the
wr on
g s
ide Fig. 204
On the instrument panel display:
A C
C

active, vehicle detected in an outer lane The adaptive cruise control (ACC) has a func-
tion th
at
help

s avoid overtaking while driving
in inside lanes at certain speeds.
If another vehicle is detected travelling at a
slower speed in an outer lane, it is displayed
on the multifunction display ››› Fig. 204.
To avoid overtaking while driving in an inside
lane the system will gently brake, and in ac-
cordance with the speed will prevent the car
from overtaking. The driver can interrupt this
intervention at any time. Deactivating the Adaptive Cruise Con-
trol

ACC temporarily in certain situa-
tions In the following situations the Adaptive
Crui
se C

ontrol (ACC) should be deactivated
due to the system's limitations ››› :
● When changing lanes, on tight bends and
rou nd

abouts, in acceleration and decelera-
tion lanes on motorways or in sections with
road works to prevent involuntary accelera-
tion to reach the programmed speed.
● When going through a tunnel, as operation
cou l

d be affected.
● On roads with several lanes, when other ve-
hicle
s are driving more slowly in the overtak-
ing lane. In this case, slower vehicles will be
overtaken on the right.
● In case of heavy rain, snow or spray, as the
vehicl
e in front might not be detected proper-
ly or, in certain circumstances, might not be
detected at all. WARNING
If the ACC does not switch off in the situa-
tions de

scribed, serious accidents and inju-
ries may occur.
● Always switch off the ACC in critical situa-
tions. Note
If you do not switch off the ACC in the afore-
mentioned sit uation

s, you may commit a le-
gal offence. 204

Driver assistance systems
Special driving situations Fig. 205
(A) Vehicle on a bend. (B) Motorcy-
c li
s
t ahead out of range of the radar sensor. Fig. 206
(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. Overtaking
When the turn sign

al 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 200.
Driving through a bend
On entering or exiting bends, the radar sen-
sor may no longer determine the vehicle in
front or react to a vehicle in the adjacent lane
››› Fig. 205 A. In these situations the vehicle
may brake unnecessarily or fail to react to re-
act to the vehicle in front. In this case, the
driver has to intervene by accelerating or in-
terrupting the braking process by applying
the brake or pushing the third lever back-
wards ››› page 200.
Driving in tunnels
When driving through tunnels the radar sen-
sor may be limited. Switch off the ACC in tun-
nels. »
205
Technical data
Advice
Operation
Emergencies
Safety

Operation
Narrow or misaligned vehicles
The r a
d
ar sensor can only detect narrow or
misaligned vehicles when they are within
range ››› Fig. 205 B. This applies particularly
to narrow vehicles such as motorbikes. In
these cases, you should brake as necessary.
Vehicles with special loads and accessories
Special loads and accessories of other vehi-
cles that jut out over the sides, backwards or
over the top may be out of the ACC's range.
Switch off the ACC when driving behind vehi-
cles with special loads and accessories or
when overtaking them. In these cases, you
should brake as necessary.
Other vehicles changing lanes
Vehicles changing lanes a short distance
away from your own can only be detected
when they are within range of the sensors.
Consequently, the ACC will take longer to re-
act ››› Fig. 206 C. In these cases, you should
brake as necessary.
Stationary vehicles
The ACC does not detect stationary objects
while driving, such as traffic tails or damaged
vehicles.
If a vehicle detected by the ACC turns or
moves over and there is a stationary vehicle
in front of it, the ACC will not react to it ›››
Fig. 206 D. In these ca ses, you should
brake as necessary.
Vehicles driving in the opposite direction
and vehicles crossing your path
The ACC does not react to vehicles approach-
ing from the opposite direction or vehicles
crossing your path.
Metal objects
Metal objects, e.g. rails on the road or sheets
used in road works, can confuse the radar
sensor and cause the ACC to react wrongly.
Factors that may affect how the radar sensor
operates
If laser sensor operation is impaired, due to
heavy rain, spray, snow or mud, the ACC is
deactivated temporarily. The relevant text
message will appear in the dash panel dis-
play. If necessary, clean the radar sensor.
When the radar 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, for example in a closed
car park. Trailer mode
When driving w
ith trailer the ACC controls
less dynamically.
Overheated brakes
If the brakes overheat, for example after
abrupt braking or in long and steep slopes,
the ACC may be deactivated temporarily. The
relevant text message will appear in the dash
panel display. In this case, adaptive cruise
control cannot be activated.
Adaptive cruise control can be reactivated
once brake temperature has cooled suffi-
ciently. The message will disappear from the
instrument panel display. If the message ACC
not available remains on for quite a long
time it means that there is a fault. Contact a
specialised workshop. SEAT recommends vis-
iting a SEAT dealership. WARNING
If the message ACC ready to start ap-
pear s

on the instrument panel display and
the vehicle in front starts up, the vehicle will
start up automatically. In this case the radar
sensor may not detect obstacles on the road.
This could cause an accident and serious in-
juries.
● Before driving off, check that the road is
cle
ar. If necessary, apply the brake. 206

Operation
Note
● Bef or
e starting a journey, verify that the
field of vision of the camera is not covered
››› Fig. 214.
● Always keep the field of vision of the cam-
era cl
ean. Switching off the Lane Assist system
in the fo
l

lowing situationsDue to the limits of the Lane Assist system,
sw
it
c

h it off in the following situations:
● When more attention is required of the
driver
● When drivin

g in a sporty style
● In unfavourable weather conditions
● On roads in poor condition
● In areas of road works Note
The Lane Assist system deactivates when
drivin g belo

w 60 km/h (37 mph).Traffic Jam Assist
D e
s

cription and operation 

››
›

table on page 2 Traffic Jam Assist helps the driver keep the
car w
ithin its

lane and to move in convoy in
case of traffic congestion or slow traffic.
Traffic Jam Assist is an additional function of
Lane Assist ››› page 213 and combines Lane
Assist functions with Adaptive Cruise Control
(ACC) ››› page 196. 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 Traffic Jam Assist
At speeds of below 60 km/h (40 mph), Traffic
Jam Assist can maintain a (temporary) dis-
tance preset by the driver with respect to the
vehicle ahead and help stay within the lane
››› .
T o do thi
s, the sy

stem automatically controls
the acceleration, brakes and steering, and
slows down the vehicle until it stops fully
when behind another vehicle that is stop-
ping. It then automatically moves off again
when the car in front does so.
Traffic Jam Assist is designed only for use on
motorways and wide roads. Therefore, never
use it in city traffic.
Switching Traffic Jam Assist on and off
If Lane Assist is on, ›››
page 213 Traffic Jam
Assist is switched on and off in the infotain-
ment system using the  button and theSETUP and
Driv
er a
s
sistance function buttons
› ›
›
 page 27.
It is activated by switching on Lane Assist
and the lane centring guide in the infotain-
ment system. If the lane centring guide is not
active, the Traffic Jam Assist system is not ac-
tive
Traffic Jam Assist may be disconnected using
the button for driver assistance systems to-
gether with Lane Assist ›››
 page 31.
Technical requirements for using Traffic Jam
Assist
● Lane Assist must be activated ›››
page 213,
Lane Assist system*.
● Adaptive Cruise Control (ACC) must be con-
nected and active ›

›› page 196.
● The selector lever must be in the D/S posi-
tion or in the
Tiptronic selection track.
● The speed must be below 60 km/h
(38 mph).
● The lane centring guide must be active
›››
page 215.
Traffic Jam Assist is not active (the Lane As-
sist control light turns yellow) ● If any of the conditions mentioned on
page 216, T
echnical requirements for using
Traffic Jam Assist are no longer met.
216

Driver assistance systems
● If an
y
of the conditions required for opera-
tion of the Lane Assist are not met
››› page 213.
● If any of the conditions necessary for the
adaptiv
e cruise control (ACC) to work are no
longer fulfilled ››› page 196.
Situations in which Traffic Jam Assist must
be switched off
Due to the limitations of the system, Traffic
Jam Assist must always be switched off in the
following situations:
● When more attention is required by the
driver.
● When driv

ing 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 u

se 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 animal
s 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
De s

cription and operation Emergency Assist detects whether there is in-
activ
ity
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 213 and combines Lane
Assist functions with Adaptive Cruise Control
(ACC) ›››
page 196. 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. »
217
Technical data
Advice
Operation
Emergencies
Safety

Operation
If the driver continues to do nothing, the sys-
t em aut
om
atically takes over the accelerator,
brakes and steering in order to brake the ve-
hicle and keep it in its lane ››› . If the re-
m ainin
g br

aking distance is sufficient, if nec-
essary the system slows down the vehicle un-
til it stops completely and automatically
switches on the electronic parking brake
››› page 172.
When the Emergency Assist is actively adjust-
ing, the hazard warning lights come on
››› page 135 and the vehicle makes slight zig-
zag movements in the lane in order to warn
other drivers.
Switching the Emergency Assist on and off
The Emergency Assist is switched on auto-
matically when the Lane Assist is switched on
››› page 213.
Technical requirements for using the Emer-
gency Assist ● The adaptive cruise control (ACC) must be
switc
hed on ››› page 196.
● The Lane Assist must be switched on
›››
page 213.
● The selector lever must be at the D/S posi-
tion or in the
Tiptronic selection track.
● The system must have detected a lane sep-
aration line on both side
s of the vehicle
››› Fig. 213. 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 218, Technical requirements for us-
ing the Emergency Assist are not fulfilled.
● If any of the conditions required for opera-
tion of the Lane Ass
ist are not met
››› page 213.
● If any of the conditions necessary for the
adaptiv
e cruise control (ACC) to work are no
longer fulfilled ››› page 196. 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
Ass
i

st 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-
t u nely

, serious accidents and injuries may oc-
cur.
● If the Emergency Assist does not operate
properly, sw
itch off the Lane Assist
››› page 213. 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. 218

Driver assistance systems
●
If thi s
occurs, the Emergency Assist may
decelerate 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. SEAT Drive Profile*
Introduction 

›› ›

table on page 2
SEAT Drive Profile enables the driver to
choose between four profiles or modes, Nor-
mal , Sport , Eco and Individual , that
modify the behaviour of various vehicle func-
tions, providing different driving experiences.
In the FR and X-PERIENCE models equipped
with dynamic chassis control, the Comfort
profile is also available.
In the Leon Cupra model the four profiles are Comfort , Sport, Cupra and Individual .
The Individual profile can be configured
according to personal preferences. The other
profiles are fixed. Description Depending on the equipment fitted in the ve-
hicl
e,

SEAT Drive Profile can operate on the
following functions:
Engine
Depending on the profile selected, the en-
gine responds more spontaneously or more
in harmony with the movements of the accel-
erator. Additionally, when Eco mode is selec-
ted, the Start-stop function is automatically
activated.
In vehicles with automatic transmission, the
gear change points are modified to position
them in lower or higher engine speed ranges.
Additionally, the Eco 1)
mode activates the In-
ertia function, enabling consumption to be
further reduced.
In manual gearbox vehicles, Eco1)
mode cau-
ses the gear change recommendation indica-
tions that appear on the instrument panel to
vary, facilitating more efficient driving.
Dynamic chassis control (DCC)

››› table on page 2 DCC continuously adapts the shock absorb-
ers
t

o the condition of the road and current
driving conditions, according to the pre-set
programme.
In the event of a fault in the DCC, the follow-
ing message is displayed on the instrument
screen Fault: damping setting .
Address
Power steering becomes more robust in Sport mode to enable a sportier driving
style. In the Leon Cupra the power steering
becomes more robust in Cupra mode.
Air conditioning
In vehicles with Climatronic, this can operate
in eco 1)
mode, especially restricting fuel con-
sumption.
Adaptive Cruise Control (ACC) 2)
According to the active driving profile, the ac-
celeration gradient of the adaptive cruise
control varies.
Electronic self-locking differential 2)
The self-locking differential adapts its behav-
iour depending on the driving profile chosen. »1)
In the Leon Cupra model, Ec o
mode is selected
through the Individual profile.
2) Applies to the Leon Cupra model.
219
Technical data
Advice
Operation
Emergencies
Safety

Care and maintenance
Advice
C ar
e and m
aintenance
Accessories and modifications to the vehicle
Accessories, replacement parts and
repair work Always ask your dealer or specialist retailer
f
or a
dv

ice before purchasing accessories and
replacement parts.
Your vehicle is designed to offer a high
standard of active and passive safety. For this
reason, we recommend that you ask a SEAT
Official Service for advice before fitting ac-
cessories or replacement parts. Your SEAT Of-
ficial Service has the latest information from
the manufacturer and can recommend acces-
sories and replacement parts which are suita-
ble for your requirements. They can also an-
swer any questions you might have regarding
official regulations.
We recommend you to use only SEAT acces-
sories and Genuine SEAT parts ®
. SEAT has
tested these parts and accessories for suita-
bility, reliability and safety. SEAT Official
Services have the necessary experience and
facilities to ensure that the parts are installed
correctly and professionally. Any
retro-fitted equipment which has a direct
effect
on the vehicle and/or the way it is driv-
en, such as a cruise control system or elec-
tronically-controlled suspension, must be
approved for use in your vehicle and bear the
e mark (the European Union's authorisation
symbol).
If any additional electrical devices are fitted
which do not serve to control the vehicle it-
self (for instance a refrigerator box, laptop or
ventilator fan, etc.), they must bear the 
sign (manufacturer conformity declaration in
the European Union). WARNING
Accessories, for example telephone holders
or cup ho l

ders, should never be fitted on the
covers, or within the working range of the air-
bags. Otherwise, there is a danger of injury if
the airbag is triggered in an accident. Modifications
Modifications must always be carried out ac-
c
or
din

g to our specifications.
Unauthorised modifications to the electronic
components, software, wiring or data transfer
in the vehicle may cause malfunctioning. Due
to the way the electronic components are
linked together in networks, other indirect
systems may be affected by the faults. This
can seriously impair safety, lead to excessive wear of components, and also invalidate your
vehicl

e registration documents.
You will appreciate that your SEAT dealership
cannot be held liable for any damage caused
by modifications and/or work performed in-
correctly.
We therefore recommend that all work should
be performed by a SEAT Official Service using
genuine SEAT parts ®
. WARNING
Incorrectly performed modifications or other
work on

your vehicle can lead to malfunctions
and cause accidents. Radio transmitters and office equip-
ment
Radio transmitters (fixed installation)
An
y
r

etrofit installations of radio transmitters
in the vehicle require prior approval. SEAT
generally authorises in-vehicle installations
of approved types of radio transmitters provi-
ded that:
● The aerial is installed correctly.
● The aerial is installed on the exterior of the
vehicl
e (and shielded cables are used togeth-
er with non-reflective aerial trimming).
● The effective transmitting power does not
exc
eed 10 Watts at the aerial base. »
245
Technical data
Advice
Operation
Emergencies
Safety