Seat Leon 2010 Owner's Manual page 183

Driving 181
Vehicles with a manual gearbox
A
The system is completely turned off by moving the control all the way to
B
the right hand side (OFF engaged), or when the vehicle is stationary, ignition
off.
Vehicles with automatic gearbox / DSG 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.
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