2017 Seat Leon 5D ECU

Opening and closing
Opening and closing C entr
a
l locking system
Description Read the additional information carefully
›› ›

 page 15
The vehicle can be locked and unlocked via
the central locking system. There are several
methods, depending on the vehicle equip-
ment:
● key with remote control ››
›

page 127 ,
● lock on driver door (emergency opening
›››
 page 15) or
● interior central locking switch ›››

page 128.
Unlocking one side of the vehicle only
When you lock the vehicle with the key, the
doors and the rear lid are locked. When you
open the door, you can either unlock only the
driver door, or all the vehicle doors. To select
the required option, use Easy Connect*
››› page 128.
Auto Lock*
The Auto Lock function locks the doors and
the rear lid when the vehicle exceeds a speed
of about 15 km/h (9 mph). The vehicle is unlocked again when the igni-
tion key i

s removed. Alternatively, the vehicle
can also be unlocked via the central locking
switch or by pulling one of the inside door
handles. The Auto Lock function can be
switched on and off on the sound system or
on the Easy Connect* system ››› page 128.
In the event of an accident in which the air-
bags inflate, the doors will be automatically
unlocked to facilitate access and assistance.
Anti-theft alarm system*
If the anti-theft alarm system senses interfer-
ence with the vehicle it triggers an audible
and visible alarm.
The anti-theft alarm system is automatically
switched on when locking the vehicle. It
switches off when the vehicle is unlocked
from a distance.
When the driver door is unlocked with the
key, you should switch on the ignition within
15 seconds. Otherwise the alarm will be trig-
gered. On some export versions, the alarm is
triggered immediately when you open a door.
To deactivate the alarm, press the  button
on the remote control key, or switch on the
ignition. After a certain time, the alarm will
automatically switch off.
Switch off the vehicle interior monitoring and
tow-away protection if you wish to prevent the alarm from being triggered accidentally
››› page 135.
Turn signals
The turn signals will flash twice when the ve-
hicle is unlocked and once when the vehicle
is locked.
If it does not flash, this indicates that one of
the doors, the rear lid or the bonnet is not
closed correctly.
Accidental lock-out
The central locking system prevents you from
being locked out of the vehicle in the follow-
ing situations: ● If the driver door is open, the vehicle can-
not be lock
ed with the central locking switch
››› page 128.
Lock the vehicle with the remote control key,
when all the doors and the rear lid have been
closed. This prevents the accidental locking
of the vehicle. WARNING
Do not leave anyone (especially children) in
the v ehic

le if it is locked from the outside and
the anti-theft security system* is enabled, as
the doors and windows cannot then be
opened from the inside. Locked doors could
delay assistance in an emergency, potentially
putting lives at risk. » 125
Technical data
Advice
Operation
Emergencies
Safety

Opening and closing
The vehicle keys or new spare keys can be
o bt
ained fr
om a SEAT Official Service, a spe-
cialised workshop or an approved key service
qualified to create this kind of key.
New keys or spare keys must be synchron-
ised before use ››› page 132. CAUTION
All of the vehicle keys contain electronic com-
ponents. Pr ot

ect them from damage, impacts
and humidity. Note
● Only u

se the key button when you require
the corresponding function. Pushing the but-
ton unnecessarily could accidentally unlock
the vehicle or trigger the alarm. It is also pos-
sible even when you are outside the radius of
action.
● Key operation can be greatly influenced by
overl
apping radio signals close to the vehicle
working in the same range of frequencies, for
example, radio transmitters or mobile tele-
phones.
● Obstacles between the remote control and
the vehic
le, bad weather conditions and dis-
charged batteries can considerably reduce
the range of the remote control.
● If the buttons of the vehicle key are press-
ed ›››

Fig. 132 or ››› Fig. 133 or one of the cen-
tral locking buttons ››› page 128 is pressed
repeatedly in short succession, the central
locking briefly disconnects as protection against overloading. The vehicle is then un-
lock
ed. L

ock it if necessary. Unlocking/Locking by remote control
Read the additional information carefully
›› ›

 page 15
The vehicle will be locked again automatical-
ly if you do not open one of the doors or the
rear lid within 30 seconds after unlocking the
car. This function prevents the vehicle from
remaining unlocked if the unlocking button is
pressed by mistake. This does not apply if
you press the  button for at least one sec-
ond.
In vehicles with a security central locking
feature (selective unlocking of side doors)
››› page 127, when the  button is pressed
once, only the driver door and the fuel tank
flap are unlocked. When the button is press-
ed a second time, all the vehicle doors are unlocked. WARNING
Observe the safety warnings ›››
in Descrip-
tion on pag e 125
. Note
● Do not u se the r

emote control key until the
vehicle is visible. ●
Other fu nction

s of the remote control key
››› page 137, Convenience opening and clos-
ing. Selective unlocking system
The selective unlocking system allows you to
only
u

nlock the driver door and the fuel tank
flap. All other doors and the rear lid remain
locked.
Unlocking the driver door and tank flap
– Press ( once) the  b utt
on on the remote
control key or turn the key once in the
opening direction.
Unlocking all the doors, the rear lid and the
tank flap simultaneously. – Within 5 seconds, press ( twice) the
 but-
ton on the remote control key, or turn the
key twice within 5 seconds in the opening
direction.
The anti-theft security system* and the anti-
theft alarm* are immediately disabled if you
unlock only the driver door, without unlock-
ing the other doors.
In vehicles with Easy Connect*, you can pro-
gramme the security central locking system
directly ››› page 128.
127
Technical data
Advice
Operation
Emergencies
Safety

Operation
Adjusting the central locking You can use Easy Connect* to select which
doors
ar
e unlocked with the central locking
system. Using the radio or the Easy Connect*
system, you can select whether the vehicle
automatically closes with the “Auto Lock”
programme at speeds of more than 15 km/h
(9 mph).
Programming the unlocking of the doors (ve-
hicles with Easy Connect)
– Select:  button > SETTINGS
fu
nction
b

utton > Opening and closing > Cen-
tral locking > Unlocking doors .
Programming the Auto Lock (vehicles with
Easy Connect)
– Select:  button > SETTINGS
fu
nction
b

utton > Opening and closing > Cen-
tral locking > Locking while
driving .
Programming the Auto Lock (vehicles with
radio)
– Select: SETUP button > control button

Central locking > Locking while
driving .
Un loc
k

ing doors
You can choose to unlock all the doors or
only the driver door when you unlock the vehicle. In all
the options, the fuel
tank flap
is also unlocked.
With the Driver setting, when you press the
 button on the remote control key once, on-
ly the driver door is unlocked. If that button is
pressed twice, the rest of the doors and the
rear lid will be unlocked.
In vehicles with a conventional key, turn the
key in the door lock, in the direction of open-
ing, twice within 2 seconds.
If the  button is pressed, all the vehicle
doors are locked. At the same time, a confir-
mation signal* is heard.
Auto Lock while driving
If you select on, all the vehicle doors are
locked at speeds above 15 km/h (9 mph).
Central locking switch Read the additional information carefully
› ›
›

 page 15
Please note the following when using the
central locking switch to lock your vehicle:
● It is not possible to open the doors or the
rear lid fr
om the outside (for safety reasons,
e.g. when stopped at traffic lights).
● The LED in the central locking switch lights
up when all the door
s are closed and locked. ●
You can open the door
s individually from
the inside by pulling the inside door handle.
● In the event of an accident in which the air-
bags
inflate, doors locked from the inside will
be automatically unlocked to facilitate access
and assistance. WARNING
● The centr a

l locking switch also operates
when the ignition is switched off and auto-
matically locks all the vehicle doors when the
 button is pressed.
● The central locking switch does not operate
if the v
ehicle is locked from the outside and
the anti-theft security system is switched on.
● Locked doors could delay assistance in an
emergency
, potentially putting lives at risk.
Do not leave anyone, especially children, in
the vehicle. Note
Your vehicle will lock automatically when it
re ac

hes a speed of about 15 km/h (9 mph)
(Auto Lock) ››› page 125. You can unlock the
vehicle again using the  button on the cen-
tral locking switch. 128

Operation
Unlocking the vehicle is confirmed with a
doub le
fl
ash of the indicator lights; locking
by a single flash.
If the vehicle is locked and then all doors and
the rear lid are closed leaving the last key
used inside the vehicle and none outside,
the vehicle will not lock immediately. All the
vehicle's indicator lights will flash four times.
The vehicle will lock after a few seconds if
you do not open any door or the rear lid.
The vehicle will lock again after a few sec-
onds if you unlock the vehicle but fail to open
any door or boot hatch.
Unlocking and opening the doors (Keyless-
Entry)
● Grip one of the front door handles. In doing
this, the sensor s
urface ››› Fig. 136 A (arrow)
on the h andl
e i
s touched and the vehicle un-
locks.
● Open the door.
On vehic
les with selective opening or info-
tainment system configuration, pulling the
door handle twice will unlock all doors.
On vehicles without a “Safe” security sys-
tem: shutting and locking doors (Keyless-Ex-
it)
● Switch the ignition off.
● Close the driver's door. ●
Touch (
once) the locking sensor surface B (arrow) on one of the front door handles. The
door th
at
i
s used must be closed.
On vehicles with a “Safe” security system:
shutting and locking doors (Keyless-Exit)
● Switch the ignition off.
● Close the driver's door.
● Touch (once) the sensor surface B (arrow)
on one of the fr
ont

door handles. The vehicle
locks with the “Safe” ››› page 131 system.
The door that is used must be closed.
● Touch (twice) the sensor surface B (arrow)
of one of
the fr

ont door handles to lock the
vehicle without activating the “Safe” security
system ››› page 131.
Unlocking and locking the boot hatch
When the vehicle is locked, the rear lid auto-
matically unlocks on opening if there is a val-
id vehicle key in the proximity ››› Fig. 135.
Open or close the rear lid normally.
After closing, the hatch locks automatically. If
the complete vehicle is unlocked, the rear lid
will not lock automatically after closing it.
What happens when locking the vehicle with
a second key
If there is a vehicle key inside the vehicle and
it is locked from the outside with a second
vehicle key, the key inside the vehicle is blocked for engine ignition
›››
page 178. In
order to enable engine ignition, the  button
on the key inside the vehicle needs to be
pressed.
Automatically disabling sensors
If the vehicle is not locked or unlocked for a
long period of time, the proximity sensors on
the passenger doors are automatically disa-
bled.
If one of the sensor surfaces on the door han-
dles is often activated in an unusual manner
with the vehicle locked (e.g. by the branches
of a bush rubbing against it), all proximity
sensors are disabled for a certain period of
time.
Sensors will again be enabled:
● After a time.
● OR: if the vehicle is unlocked with the 
butt
on on the key.
● OR: if the boot is opened.
● OR: if

the vehicle is unlocked manually with
the key
.
Keyless Access temporary disconnection
function*
You can deactivate the vehicle's Keyless Ac-
cess unlocking for a locking and unlocking
cycle.
130

Opening and closing
● Mo v
e the g
ear lever to position P (if the ve-
hicle has automatic gearbox), since other-
wise the vehicle cannot be locked.
● Close the door.
● Push the central locking button  on the
remote c
ontrol and touch the locking sensor
surface ››› Fig. 136 B on the driver door han-
dl e onc
e w

ithin the following 5 seconds. Do
not grip the door handle, otherwise the vehi-
cle will not lock. Deactivation is also possible
if the vehicle is locked through the driver’s
door lock.
● To check that the function has been deacti-
vated, w
ait at least 10 seconds, grip and pull
on the door handle. The door should not
open.
The next time the door can only be unlocked
via the remote control or the lock cylinder.
The next time the door is locked/unlocked,
Keyless Access will be active again.
Convenience functions
To close all the electric windows and the sun-
roof using the convenience function, keep a
finger for a few seconds on the locking sen-
sor surface B (arrow) of the door handle un-
ti l
the w

indows and roof have closed.
The doors opened by touching the sensor
surface of the door handle depend on the
settings that have been activated in the info-
tainment system with the  button and theSETTINGS and
Openin
g and c
lo
sing function but-
t on
s. CAUTION
The sensor surfaces on the door handles
cou l

d engage if hit with a water jet or high
pressure steam if there is a valid vehicle key
in the proximity. If at least one of the electric
windows is open and the sensor surface B (arrow) on one of the handles is activated
continuou
s

ly, all windows will close. Note
● If the v

ehicle battery has little or no charge,
or the vehicle key battery is almost or entire-
ly out of charge, you will probably not be able
to lock or unlock the vehicle with the Keyless
Access system. The vehicle can be unlocked
or locked manually ››› page 97.
● To control the proper locking of the vehicle,
the rele
ase function is disabled for approx. 2
seconds.
● If the message Keyless access system
faulty is di

splayed on the screen of the
dash panel, abnormalities may occur in the
operation of the Keyless Access system. Con-
tact a specialised workshop. SEAT recom-
mends visiting a SEAT dealership for this.
● Depending on the function set on the info-
tainment sy
stem for the mirrors, the exterior
mirrors will unfold and the surround lighting
will come on when unlocking the vehicle us-
ing the sensor surface on the driver and pas-
senger door handles ››› page 150. ●
If ther e i

s no valid key inside the vehicle or
the system fails to detect one, a warning will
display on the dash panel screen. This could
happen if any other radio frequency signal in-
terferes with the key signal (e.g. from a mo-
bile device accessory) or if the key is covered
by another object (e.g. an aluminium case).
● If the sensors are very dirty, e.g. have a lay-
er of sa
lt, the correct functioning of the sen-
sors on the door handles may be affected. In
this case, clean the vehicle.
● If the vehicle is equipped with an automatic
gearbo
x, it may only be locked in the gear
stick is in position P. Anti-theft security system (Safelock)*
The following message is displayed on the in-
s
trument
p

anel to remind the driver that
when the vehicle is closed from the outside,
the anti-theft security system is switched on.  Do not forget the Safelock.
Please see Instruction Manual . The
vehicle cannot be opened from inside. This
makes it more difficult for unauthorised per-
sons to break into the vehicle ››› in De-
s c
ription on p

age 125.
The anti-theft security system can be switch-
ed off each time the vehicle is locked:
● Turn the key a second time to the lock posi-
tion, in the door lock, w

ithin two seconds. If »
131
Technical data
Advice
Operation
Emergencies
Safety

Opening and closing
● Panor
amic/ti
lting sunroof open (partially or
completely).
● Movement of objects inside the vehicle,
such a
s loose papers, items hanging from
the rear vision mirror (air fresheners), etc. Note
● If the v

ehicle is relocked and the alarm is
activated without the volumetric sensor func-
tion, relocking will activate the alarm with all
its functions, except the volumetric sensor.
This function is reactivated when the alarm is
switched on again, unless it is deliberately
switched off.
● If the alarm has been triggered by the volu-
metric sensor
, this will be indicated by a
flashing of the warning lamp on the driver
door when the vehicle is opened. The flash is
different to the flash indicating the alarm is
activated.
● The vibration of a mobile phone left inside
the vehic
le may cause the vehicle interior
monitoring alarm to trigger, as both sensors
react to movements and shakes inside the ve-
hicle.
● If on activating the alarm, any door or the
rear lid i
s open, only the alarm will be activa-
ted. The vehicle interior monitoring and the
anti-tow system will only be activated once
all the doors are closed (including the rear
lid). Deactivating the vehicle interior moni-
t
orin
g and anti-t

ow system* When the vehicle is locked, the alarm will be
trigg
er

ed if movements are detected in the
interior (e.g. by animals) or if the vehicle's in-
clination is changed (e.g. during transport).
You can prevent the alarm from being trig-
gered accidentally by switching off the vehi-
cle interior monitoring and/or tow-away pro-
tection.
● To switch off the interior monitoring and
to w-

away protection, switch off the ignition
and, using the Infotainment system, select:  button >
S
ET
TINGS function button > Open-
in g and c
lo

sing > Central locking > Switch off
alarm.
● When the vehicle is locked now, the vehicle
interior monitorin
g and the tow-away protec-
tion are switched off until the next time the
door is opened.
If the anti-theft security system (Safelock)*
››› page 131 is switched off, the vehicle interi-
or monitoring and the tow-away protection
are automatically switched off. WARNING
Observe the safety warnings ›››
in Descrip-
tion on pag e 125
. Rear lid (luggage compart-
ment)
R e
ar lid aut

omatic locking Where the vehicle has been locked by press-
ing the


button on the remote control with
the rear lid open, the rear lid will lock auto-
matically when closed.
The automatic rear lid locking time extension
function can be activated. Where this func-
tion is activated and once the rear lid has
been unlocked by pressing the  button on
the remote control key ›››
page 127, the rear
lid can be re-opened for a certain length of
time.
Where required, the automatic tailgate lock-
ing time extension function can be activated
or deactivated at an Authorised SEAT Service,
which will provide all the necessary informa-
tion.
Before the vehicle locks automatically, there
is a risk of intruders getting into the vehicle.
Therefore, we recommend you always lock
the vehicle by pressing the  button on the
remote control or by using the central locking
button. WARNING
Observe the safety warnings ›››
in Intro-
duction on pag e 97
. » 135
Technical data
Advice
Operation
Emergencies
Safety

Seats and head restraints
Electric driver's seat adjustment* Read the additional information carefully
›› ›
 page 19 WARNING
● If the el ectric

front seats are used negli-
gently or without paying due attention, it can
cause serious injury.
● The front seats can also be electrically ad-
just
ed when the ignition is switched off. Nev-
er leave a child or any other person who may
need help in the vehicle.
● In the event of an emergency, electrical ad-
justment
can be stopped by pressing any
control. CAUTION
To avoid damaging the electrical components
of the fr ont

seats, please refrain from kneel-
ing on the seat or applying sharp pressure at
a single point to the seat cushion and back-
rest. Note
● It m a

y not be possible to electrically adjust
the seat if the vehicle battery is very low.
● If the engine is started while the seats are
being electric
ally adjusted, the adjustment
will stop. Adjusting the front head restraints
Read the additional information carefully
›› ›

 page 20
Adjust the head restraint ›››
 page 20 so
that as far as possible the top of the head re-
straint is level with the top of your head.
When this is not possible, try to get as close
as possible to this position.
Adjustment of the rear head restraints Fig. 150
Rear centre head restraint: release
point . When transporting people in the back seat,
p
l
ac

e the head restraints of the occupied
seats at a minimum of the next socket up
››› .Adjusting the head restraints
– To set the head restraint higher, grasp the
side
s

with both hands and move it up-
wards, until you see it engage.
– To set the head restraint lower down, press
the 1
› ››
Fig. 150
b
utton and move it
downwards.
Removing the head restraint
To remove the head restraint, the correspond-
ing backrest must be partially folded forward. – Unlock the backrest ›››
page 156.
– Move the head restraint upwards until it ar-
rives

to the top.
– Press button 1
› ›
› Fig. 150
, while simulta-
neously pressing on the security hole 2 ›››
Fig. 150 with a fl at
screwdriver a maxi-
mum of 5 mm wide, and remove the head
restraint.
– Move the backrest until it engages properly
›› ›

.
Fittin g the he
a
d restraint
To mount the external head restraints, the
corresponding backrest must be partially fol-
ded forward.
– Unlock the backrest ›››
page 156.
– Insert the head restraint bars into the
guides u

ntil they perceptibly engage. It »
153
Technical data
Advice
Operation
Emergencies
Safety

Operation
Folding the backrest forwards
– Place the side seat belts in the trim clip
› ›
›
Fig. 153.
– Slide the head restraint(s) downwards
›››
page 153.
– Press the release lever ›››
Fig. 154 1 in the
dir ection of
the arr
ow.
– Fold the backrest forwards.
Conv
erting the table to a seat
– Raise the backrest until it engages in its
upright pos

ition ››› . The red marking on
the t ab
›
›
› Fig. 154 2 should no longer be
v i
s
ible when the backrest is properly se-
cured. WARNING
The safe driving chapter contains important
inform ation, tip

s, suggestions and warnings
that you should read and observe for your
own safety and the safety of your passengers
››› page 74. WARNING
● Mak e s

ure that the rear backrest is securely
locked in position so that the seat belt can
provide proper protection on the centre rear
seat.
● The rear backrest must always be securely
latc
hed so that objects stored in the luggage compartment will not fly forward through the
interior durin
g s

udden braking. CAUTION
● With the b ac

krest inclined there is a danger
of damaging the rear head restraints when
adjusting the front seats backwards.
● When folding the backrest forwards, make
sure t
o place the side seat belts in the trim
clip to prevent them from being damaged by
becoming trapped in the backrest lock. Folding down and lifting the rear seat
b
ac
k

rest 3 App
lies to the model: LEON ST Fig. 155
On the rear seat backrest: release
c at
c

h 1 ; red mark
2 . Fig. 156
In the luggage compartment: levers
for r emot

e release of the left part 1 and right
par t
2 of the rear seat backrest.
The rear seat backrest is split and each part
be lo
w
er

ed separately to extend the luggage
compartment.
When the rear seat backrest is lowered no-
body else can travel in the corresponding
seats (not even a child).
Lowering the rear seat backrest with the un-
lock button
● Lower the head restraint properly.
● Push the unlock button ›››
Fig. 155 1 for-
w ar
d
s and at the same time lift the backrest.
● The rear seat backrest is not engaged when
the red mark
ing of the button 2 is visible.
L o
w
ering the rear seat backrest with the re-
mote release lever
● Lower the head restraint properly.
156