2015 Seat Leon 5D display

Driver assistance systems
●
When fo l
lowing a line of traffic uphill, if you
want to prevent the vehicle from rolling back
accidentally when starting off, hold the brake
pedal down for a few seconds before starting
off. Note
The Official Service or a specialist workshop
c an t el

l you if your vehicle is equipped with
this system. Start-Stop system*
D e
s

cription and operation 

›› ›

table on page 2
The Start-Stop system helps save fuel and re-
duce CO 2 emissions.
In Start-Stop mode, the engine will automati-
cally switch off when the vehicle stops, when
stopping at traffic lights for example. The ig-
nition remains switched on during the stop-
ping phase. The engine automatically
switches back on when required.
As soon as the ignition is switched on, the
Start-Stop function is automatically activa-
ted.
Basic requirements for the Start-Stop mode ● The driver door must be closed. ●
The driver mu s

t have their seat belt fas-
tened.
● The bonnet must be closed.
● The vehicle must have travelled at more
than 4 km/h (2 mph) sinc
e the last stop.
● The vehicle cannot be towing a trailer. WARNING
● Never sw it

ch the engine off until the vehi-
cle is stationary. The brake servo and power
steering functions will not be completely cov-
ered under warranty. More force may also be
needed to turn the steering wheel or to brake.
As you cannot steer and brake in the normal
manner, there is a greater risk of accidents
and serious injury.
● Never remove the key from the ignition if
the vehic
le is in motion. Otherwise, the steer-
ing could lock making it impossible to steer
the vehicle.
● To avoid injury, make sure that the Start-
Stop sys
tem is switched off when working in
the engine compartment ››› page 185. CAUTION
The Start-Stop system must always be
swit c

hed off when driving through flooded
areas ››› page 185. Stopping/Starting the engine
Vehicles with a manual gearbox
– When the vehicle is stopped, put it into
neutral and r

elease the clutch pedal. The
engine will switch off. The warning lamp 
will appear on the instrument panel dis-
play.
– When the clutch pedal is pressed the en-
gine wil

l start up again. The warning lamp
will switch off.
Vehicles with an automatic gearbox
– Use the foot brake to bring the vehicle to a
stop and k

eep the brake pedal pressed
down with your foot. The engine will switch
off. The warning lamp  will appear in the
display.
– When you take your foot off the brake pedal
the engine wi

ll start up again. The warning
lamp will switch off.
Additional information related to the auto-
matic gearbox
The engine stops when the selector lever is in
the positions P, D, N and S, in addition to
when in manual mode. With the selector lev-
er in position P, the engine will also remain
switched off when you take your foot off the
brake pedal. In order to start the engine up
again the accelerator must be pressed, or an-
other gear engaged or the brake released. »
183
Technical data
Advice
Operation
Emergencies
Safety

Operation
If the selector lever is placed in position R
durin g the s
t
opping phase, the engine will
start up again.
Change from position D to P to prevent the
engine from accidentally starting when
changing and passing by position R. Note
● You c an c

ontrol whether the engine should
switch off or not by reducing or increasing the
brake force applied. While the vehicle re-
mains stopped, the engine will not stop if the
brake pedal is slightly pressed, in traffic jams
with frequent stopping and starting for exam-
ple. As soon as strong pressure is applied to
the brake pedal, the engine will stop.
● In vehicles with manual gearbox, during
the stop
ping phases the brake pedal must re-
main depressed to prevent the vehicle from
moving.
● If the engine “stalls” in vehicles with man-
ual g
earbox, it can be directly started up
again by immediately pressing the clutch
pedal. General notes
The system can interrupt the Start-Stop mode
fr
equently
f

or different reasons. The engine does not switch off
Befor

e the stopping phase, the system veri-
fies whether certain conditions are met. The
engine does not switch off, in the following
situations for example:
● The engine has not yet reached the mini-
mum required t
emperature for the Start-Stop
mode.
● The interior temperature selected for the air
conditioner ha
s not yet been reached.
● The interior temperature is very high/low.
● Defrost function button activated
›››
 page 45.
● The parking aid* is switched on.
● The battery is very low.
● The steering wheel is overly turned or is be-
ing turned.
● If

there is a danger of misting.
● After engaging reverse gear.
● In case of a very steep gradient.
● In the CUPRA version with automatic gear-
box, when it i
s in Tiptronic mode or in its
sports driving position ( S).
The indication  is shown on the instrument
panel display, and in addition, the driver in-
formation system* shows, . The engine starts by itself
During a s

topping phase the normal Start-
Stop mode can be interrupted in the follow-
ing situations: The engine restarts by itself
without involvement from the driver.
● The interior temperature differs from the
value select
ed on the air conditioner.
● Defrost function button activated
›››
 page 45.
● The brake has been pressed several times
consec
utively.
● The battery is too low.
● High power consumption. Note
In vehicles with an automatic gearbox, if the
select or l

ever is placed in position D, N or S
after engaging reverse gear, the vehicle must
be driven at a speed faster than 10 km/h (5
mph) for the system to return to conditions in
which the engine can be stopped. 184

Driver assistance systems
Manually switching on/off the Start-
St op sy
s
tem Fig. 191
Centre console: Start-Stop system
b utt
on If you do not wish to use the system, you can
sw
it
c

h it off manually.
– To manually switch on/off the Start-Stop
syst

em, press the button  . The button
symbo l
r
emains lit up yellow when the sys-
tem is switched off. Note
The system is automatically switched on each
time the engine i s

deliberately stopped dur-
ing a stopping phase. The engine will start
automatically. Driver messages on the instrument
p
anel
di

splay Start-Stop system deactivated.
Start the engine manually
This driv

er message is displayed when cer-
tain conditions are not met during the stop-
ping phase and the Start-Stop system cannot
restart the engine. The engine must be star-
ted manually.
Start-Stop system: Fault! Func-
tion not available There is a fault in the Start-Stop system. Take
the vehicle to a workshop to have the fault
repaired. Cruise control system (GRA)*
Operation Fig. 192
Instrument panel display: CCS status
indic ation
s Read the additional information carefully
› ›
›

 page 40
The cruise control system (CCS) is able to
maintain the set speed from 20 km/h (15
mph).
The CSS only reduces vehicle speed by ceas-
ing to accelerate, not by actively braking the
vehicle ››› .
C ontr
o

l lamp
When the warning lamp  is lit, cruise con-
trol is active. »
185
Technical data
Advice
Operation
Emergencies
Safety

Operation
Several warning and indication lamps light
up f or a f
ew sec
onds when the ignition is
switched on, signalling that the function is
being verified. They will switch off after a few
seconds.
Displayed on the CCS screen
Status Fig. 192:
CCS temporarily switched off. The set
speed is displayed in small figures.
System error. Contact a specialised work-
shop.
CCS switched on. The speed memory is
empty.
The CCS is switched on. The set speed is
displayed in large figures. WARNING
Use of the cruise control could cause acci-
dents and sev

ere injuries if it is not possible
to drive at a constant speed maintaining the
safety distance.
● Do not use the cruise control in heavy traf-
fic, if the dis
tance from the vehicle in front is
insufficient, on steep roads, with several
bends or in slippery circumstances (snow,
ice, rain or loose gravel), or on flooded roads.
● Never use the CCS when driving off-road or
on unpav
ed roads.
● Always adapt your speed and the distance
to the v
ehicles ahead in line with visibility, A
B
C
D weather conditions, the condition of the road
and the traffic
s

ituation.
● To avoid unexpected operation of the cruise
contro
l system, turn it off every time you fin-
ish using it.
● It is dangerous to use a set speed which is
too high for the pr
evailing road, traffic or
weather conditions.
● When travelling down hills, the CCS cannot
maintain a c
onstant speed. The vehicle tends
to accelerate under its own weight. Select a
lower gear or use the foot brake to slow the
vehicle. WARNING
Observe the safety warnings ›››
in Warning
and indication l amp
s on page 109. Operating the cruise control system*
Read the additional information carefully
› ›
›

 page 40
The value indicated in the table in brackets
(in mph, miles per hour) only refers to instru-
ment panels with indications in miles.
Changing gear in CCS mode
The CCS decelerates as soon as the clutch
pedal is pressed, intervening again automati-
cally after a gear is engaged. Travelling down hills with the CCS
When travel

ling down hills the CCS cannot
maintain a constant speed. Slow the vehicle
down using the brake pedal and reduce
gears if required.
Automatic off
The cruise control system (CCS) is switched
off automatically or temporarily:
● If the system detects a fault that could af-
fect the w
orking order of the CCS.
● If you press and maintain the accelerator
pedal f
or a certain time, driving faster than
the stored speed.
● If the dynamic driving control systems in-
terv
ene (e.g. ASR or ESC).
● If the airbag is triggered.
186

Driver assistance systems
Adaptive Cruise Control ACC* Intr oduction Fig. 193
Detection area. 

›› ›
table on page 2
The adaptive cruise control (ACC) is an exten-
sion of the normal cruise control system
(CCS) ››› .
The A C
C

function allows the driver to estab-
lish a cruise speed of between 30 and 160
km/h (18 and 100 mph), as well as the tem-
porary distance required with regard to the
vehicle in front. The ACC function will adapt
the vehicle's cruise speed at all times, main-
taining a safe distance with the vehicle in
front.
The ACC function is based on a radar sensor
that can measure the distance to the vehicles
in front. If the vehicle is equipped with automatic
gearbo

x, the ACC can brake the vehicle until
it stops completely if a vehicle in front of it
stops.
Driver intervention prompt
During driving, the ACC is subject to certain
limitations inherent in the system. In other
words, in certain circumstances the driver will
have to adjust speed him or herself, as well
as the distance from other vehicles.
In this case, the instrument panel screen will
warn you to intervene by applying the brake
and a warning tone will be heard
››› page 188. WARNING
The intelligent technology in the ACC cannot
ov er

come the system's inherent limitations
or change the laws of physics. If used negli-
gently or involuntarily, it may cause serious
accidents and injuries. The system is not a re-
placement for driver awareness.
● Adapt your speed and safe distance to the
vehicl
e in front of you at all times to suit visi-
bility, weather, road and traffic conditions.
● Do not use the ACC when visibility is bad,
on steep r
oads, with several bends or in slip-
pery circumstances such as snow, ice, rain or
loose gravel, or on flooded roads.
● Never use the ACC when driving off-road or
on unpav
ed roads. The ACC has been de-
signed for use on paved roads only. ●
The AC C

does not react on approaching a
fixed obstacle, such as the tail of a traffic
jam, a damaged vehicle or a vehicle stopped
at the traffic lights.
● The ACC does not react to people or animal
or vehic
les crossing your path or which ap-
proach you head-on in the same lane.
● If the ACC does not reduce speed sufficient-
ly, brak
e the vehicle immediately by applying
the pedal.
● If you are driving using the spare wheel,
the ACC
system could automatically switch
off during the journey. Switch off the system
when starting off.
● If the vehicle continues to move involuntar-
ily af
ter a driver intervention prompt, brake
the vehicle by applying the pedal.
● If the dash panel displays a driv
er interven-
tion prompt, adjust the distance yourself.
● The driver should be ready to accelerate or
brake b
y him/herself at all times. CAUTION
If you have the sensation that the radar sen-
sor is d

amaged, disconnect the ACC. This will
avoid possible damage. If this occurs have it
adjusted.
● Repairs to the radar sensor require special-
ist
knowledge and special tools. SEAT recom-
mends visiting a SEAT dealership for this pur-
pose. » 187
Technical data
Advice
Operation
Emergencies
Safety

Operation
Note
● If the A C
C system does not work as descri-
bed in this chapter, do not use it until it has
been checked by a specialised workshop.
SEAT recommends visiting a SEAT dealership
for this purpose.
● Maximum speed with the ACC activated is
limited to 160 km/h (100 mph).
● When the A

CC is switched on, strange
noises
may be heard during automatic brak-
ing cause by the braking system. Indications on the display, warning
and indic
ation l
amp

s Fig. 194
On the instrument panel display: (A)
A C
C

temporarily inactive, vehicle detected in
front, temporary distance adjusted. (B) ACC
active, vehicle detected in front, temporary
distance adjusted. Status display
Indic
ation
s

on the display ››› Fig. 194:
Vehicle in front, the ACC is inactive.
1 Distance margin selected, the ACC is in-
activ
e.
V ehic

le detected in front. The ACC is ac-
tive.
Adjustment of the temporary distance
from the vehicle in front with a program-
med speed.
Temporary distance adjustment from the
vehicle in front with a programmed
speed.
Warning and indication lamps
››› in Warning and indication lamps on
p ag
e 109

. 
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 radar sensor visually for dirt,
ice or knocks. If it is still unavailable, refer to a special-
ised workshop to have the system inspected.
a)
The symbol on the instrument panels with colour display is in
colour.
2 3
4
5
188

Driver assistance systems
The ACC is active.
No vehicle is detected in front. The programmed speed
remains constant.

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: the ACC is not
active.
The system is switched on, but is not adjusting.


The ACC is active.
Some warning and indication 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 indication l amp
s on page 109. 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. Radar sensor
Fig. 195
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. 195 1 . This sensor can detect vehi-
c l
e

s in front up to a distance of approximately
120 m.
The radar 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 radar 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
presenc

e of metallic objects (e.g. rails on the
road 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 structural modifications are made to the ve-
hicle, for example, if the suspension is low-
ered or the front spoiler is modified, ACC op-
eration may be affected. So structural modifi-
cations should only be made by specialised
workshops. SEAT recommends visiting a SEAT
dealership for this purpose.
If work is done incorrectly on the front of the
vehicle, the radar sensor could be damaged
or lose its settings, and ACC operation may
be affected. So repair work should only be
made by specialised workshops. SEAT recom-
mends visiting a SEAT dealership for this pur-
pose. 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. » 189
Technical data
Advice
Operation
Emergencies
Safety

Operation
●
Rep air
s to the radar sensor require special-
ist knowledge and special tools. SEAT recom-
mends visiting a SEAT dealership for this pur-
pose.
● Clean away the snow with a brush and the
ice pref
erably with a solvent-free de-icer
spray. Operating the Adaptive Cruise Control
AC
C Fig. 196
On the left of the steering column:
thir d l
ev

er for operating the Adaptive Cruise
Control. Fig. 197
On the left of the steering column:
third l ev

er for operating the Adaptive Cruise
Control. When the Adaptive Cruise Control (ACC) is
c
onnect
ed, the gr

een control lamp  will
light up on the instrument panel, and the
programmed speed and ACC status will be
displayed ››› Fig. 194.
Conditions for the adaptive cruise control to
be activated ● The selector lever must be at the D or S po-
sition or in the tiptronic
selection track. In
manual gearbox any forward gear must be
engaged, except the 1st gear.
● In vehicles with manual gearbox, if there is
no programmed s
peed, drive at least at
30 km/h (18 mph). Speed control
When the ACC

is connected, speed can be
programmed and adjusted. The programmed
speed must be different from the speed at
which the vehicle travels if the distance is be-
ing adjusted at the time.
What functions can be operated?
If you activate the ACC the current speed can
be programmed as the “control speed”.
During driving, control can be operated at
any time and the speed also modified.
The following settings can also be adjusted:
● Distance.
● Driving Programme.
● Driving style.
Activatin
g/Deactivating
Any speed 1)
between 30 and 160 km/h (19
and 100 mph) can be adjusted.
Activating the ACC
● Pull the lever to position 1
› ›
› Fig. 196
.
ACC standby will be shown on the instrument
panel display. 1)
Different speed limits apply in each country and
depend on the unit indic

ated on the speedometer.
190