2012-2020 Seat Leon 4 Door Operation -> Anti-theft alarm system* User Manual
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Operation -> Anti-theft alarm system* for Your Seat Leon 4 Door Third Generation (2012-2020)

Opening and closing  
Childproof lock  
Deactivating the childproof lock  
Synchronising the vehicle key  
Unlock the vehicle and open the door  
whose childproof lock you want to deacti-  
vate.  
If the button is pressed frequently outside  
of the vehicle range, it is possible that the ve-  
hicle can no longer be locked or unlocked us-  
ing the key. In this case, the key must be re-  
synchronised as described below:  
With the door open, rotate the groove in the  
door using the ignition key, anti-clockwise  
for the left hand side doors Fig. 147 and  
›››  
Unfold the vehicle key blade page 128.  
›››  
clockwise for the right hand side doors.  
If necessary, remove the cover from the  
Once the childproof lock is activated, the  
door can only be opened from the outside.  
The childproof lock can be activated or de-  
activated by inserting the key in the groove  
when the door is open, as described above.  
driver door lever  
››› page 15.  
Press the button on the vehicle key. For  
this, it must remain with the vehicle.  
Open the vehicle within one minute using  
the key blade. The key has been synchron-  
ised.  
Fig. 147 Childproof lock on the left hand side  
door.  
The childproof lock prevents the rear doors  
from being opened from the inside. This sys-  
tem prevents minors from opening a door ac-  
cidentally while the vehicle is running.  
If necessary, fit the cap.  
Anti-theft alarm system*  
Description  
This function is independent of the vehicle  
electronic opening and locking systems. It  
only affects rear doors. It can only be activa-  
ted and deactivated manually, as described  
below:  
The anti-theft alarm makes it more difficult to  
break into the vehicle or steal it.  
The anti-theft alarm is automatically turned  
on when the vehicle is locked with the key.  
Activating the childproof lock  
The turn signal light will flash twice on  
opening and deactivating the alarm.  
The turn signal light will flash once on clos-  
ing and activating the alarm.  
Unlock the vehicle and open the door in  
which you wish to activate the childproof  
lock.  
»
With the door open, rotate the groove in the  
door using the ignition key, clockwise for  
the left hand side doors Fig. 147 and an-  
›››  
ti-clockwise for the right hand side doors.  
135  
Operation  
When does the system trigger an alarm?  
How to turn OFF the alarm  
The alarm is triggered immediately if one  
of the battery cables is disconnected while  
the alarm system is active.  
The anti-theft alarm siren will be triggered for  
about 30 seconds accompanied by sound  
and optical (flashing) warning signals and  
will be repeated about ten times when the  
vehicle is locked and the following unauthor-  
ised actions are attempted:  
Unlock the vehicle with the unlocking button  
on the key or turn on the ignition with a valid  
key.  
Note  
Vehicle interior monitoring and an-  
ti-tow system*  
After 28 days, the indicator light will be  
switched off to prevent the battery from ex-  
hausting if the vehicle has been left parked  
for a long period of time. The alarm system  
remains activated.  
Opening a door that is mechanically un-  
It is a monitoring or control function incorpo-  
rated in the anti-theft alarm* which detects  
unauthorised vehicle entry by means of ultra-  
sound.  
locked using the vehicle key without switching  
on the ignition in the next 15 seconds (in cer-  
tain markets, such as the Netherlands, there is  
no 15 second waiting time and the alarm is  
activated immediately on opening the door).  
If, after the audible warning goes off, an-  
other monitored area is accessed (e.g. the  
rear lid is opened after a door has been  
opened), the alarm is triggered again.  
Activation  
A door is opened.  
It is automatically switched on when the  
anti-theft alarm is activated.  
The bonnet is opened.  
The anti-theft alarm is not activated  
when the vehicle is locked from within using  
the central locking button .  
The rear lid is opened.  
Deactivation  
When the ignition is switched on with a non-  
If the driver door is unlocked mechanical-  
authorised key.  
Open the vehicle with the key, either me-  
ly with the key, only the driver door is un-  
locked, the rest of the doors remain locked.  
Only when the ignition has been turned on  
will the other doors be available - but not  
unlocked - and the central locking button  
will be activated.  
When the vehicle battery is disconnected.  
chanically or by pressing the button on  
the remote control. The time period from  
when the door is opened until the key is in-  
serted in the contact should not exceed 15  
seconds, otherwise the alarm will be trig-  
gered.  
Movement inside the vehicle (in vehicles  
with interior monitoring page 137).  
›››  
When the vehicle is towed (in vehicles with  
anti-tow system page 137).  
›››  
If the vehicle battery is run down or flat  
When the vehicle is raised (in vehicles with  
then the anti-theft alarm will not operate  
correctly.  
Press the button on the remote control  
anti-tow system page 137).  
›››  
twice. The volumetric sensor and tilt sen-  
sors will be deactivated. The alarm system  
remains activated.  
When the vehicle is transported on a ferry  
Vehicle monitoring remains active even if  
or by rail (vehicles with an anti-tow system or  
vehicle interior monitoring page 137).  
the battery is disconnected or not working  
for any reason.  
›››  
When a trailer connected to the anti-theft  
alarm system is disconnected.  
136  
Opening and closing  
The vehicle interior monitoring and the anti-  
tow system are automatically switched on  
again next time the vehicle is locked.  
Movement of objects inside the vehicle,  
Deactivating the vehicle interior  
monitoring and anti-tow system*  
such as loose papers, items hanging from the  
rear vision mirror (air fresheners), etc.  
When the vehicle is locked, the alarm will be  
triggered if movements are detected in the in-  
terior (e.g. by animals) or if the vehicle's incli-  
nation is changed (e.g. during transport). You  
can prevent the alarm from being triggered  
accidentally by switching off the vehicle inte-  
rior monitoring and/or tow-away protection.  
The vehicle interior monitoring and anti-tow  
sensor (tilt sensor) are automatically switch-  
ed on when the anti-theft alarm is switched  
on. In order to activate it, all the doors and  
the rear lid must be closed.  
Note  
If the vehicle is relocked and the alarm is  
activated without the volumetric sensor  
function, 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 you wish to switch off the vehicle interior  
monitoring and the anti-tow system, it must  
be done each time that the vehicle is locked;  
if not, they will be automatically switched on.  
To switch off the interior monitoring and  
tow-away protection, switch off the ignition  
and, using the Infotainment system, select: In-  
fotainment button /  and then the Ve-  
hicle > SETTINGS > Opening and clos-  
ing > Central locking > Vehicle in-  
terior monitoringbutton.  
If the alarm has been triggered by the  
volumetric 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 vehicle interior monitoring and the anti-  
tow system should be switched off if animals  
are left inside the locked vehicle (otherwise,  
their movements will trigger the alarm) or  
when, for example, the vehicle is transported  
or has to be towed with only one axle on the  
ground.  
The vibration of a mobile phone left in-  
When the vehicle is locked now, the vehicle  
side the vehicle may cause the vehicle in-  
terior monitoring alarm to trigger, as both  
sensors react to movements and shakes in-  
side the vehicle.  
interior monitoring and the tow-away protec-  
tion are switched off until the next time the  
door is opened.  
False alarms  
Interior monitoring will only operate correctly  
if the vehicle is completely closed. Please ob-  
serve related legal requirements.  
If the anti-theft security system (Safelock)*  
If on activating the alarm, any door or the  
page 134 is switched off, the vehicle interi-  
›››  
rear lid is open, only the alarm will be acti-  
vated. The vehicle interior monitoring and  
the anti-tow system will only be activated  
once all the doors are closed (including the  
rear lid).  
or monitoring and the tow-away protection  
are automatically switched off.  
The following cases may cause a false  
alarm:  
WARNING  
Open windows (partially or fully).  
Observe the safety warnings  
scription on page 127.  
in De-  
›››  
Panoramic/tilting sunroof open (partially or  
completely).  
137  

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