Seat IBIZA ST Owner's Manual page 159

Driving 157
Vehicles with a manual gearbox
A
The system is completely turned off by moving the control all the way to
A
the right hand side (OFF engaged), or when the vehicle is stationary, ignition
off.
Vehicles with an automatic gearbox
To completely disengage the system, the selector lever must be placed in one
of the following positions: P, N, R or 1 or with the vehicle stopped and the
ignition turned off.
Safety First Operating Instructions Practical Tips Technical Specifications