Synchronize the vehicle keyIf the
unlock button is pressed frequently outside of the vehicle range,
it is possible that the vehicle can no longer be locked or unlocked using the key.
In this case, the key must be
resynchronised as described below:
● Remove the key blade from the vehicle key
● Press the
unlock 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 synchronised.
● If necessary, fit the cap.
Pull out the key bladeThe central locking remote control has the
key blade inside it for use in case of emergency locking/unlocking of the driver's door
If you press button 1 (αυτό που είναι στο πλάι) once,
the key blade is unlocked and a ring appears as a key ring.
Press and hold the button 1 and at the same time pull on the ring in the direction of arrow
to completely remove the key blade.
Εδώ το manual, σελίδες 100 & 99
https://www.seat.com/datamanual-manual/leon/my21_w48/en-uk/LEON_11_20_EN.pdf