Seat Leon 2010 Owner's Manual page 102

100 Unlocking and locking
Unlocking the manually (emergency) locked driver door
Insert the key in the door lock cylinder and rotate anti-clockwise for the left
hand side doors and clockwise for the right hand side doors.
The door lock is released and the door may be opened using the exterior door
handle.
Unlocking the remaining manually (emergency) locked doors
First the driver door must be unlocked to gain entry to the vehicle. Operate the
internal door handle for the required door. If the childproof lock is activated
on the rear doors, when the interior door release lever is operated the door is
unlocked but does not open. The exterior door handle may now be used to
open the door.
Note
Once the vehicle is open, if you wish to lock it manually (emergency locking),
repeat the previous instructions.
Childproof lock
The childproof lock prevents the rear doors from being
opened from the inside. This system prevents minors from
opening a door accidentally while the vehicle is running.
Fig. 58 Childproof lock
on the left hand side door
Fig. 59 Childproof lock
on the right hand side
door