With the ignition switched on:
Steptronic transmission: Press the switch while the brake is pressed or selector lever position P is set.
The LED and indicator lamp go out.
The parking brake is released.
Automatic release in cars with Steptronic transmission
Inadvertent operation of the accelerator pedal
Make sure that the accelerator pedal is not operated unintentionally; otherwise, the vehicle is set in motion and there is a risk of an accident.
For automatic release, step on the accelerator pedal.
The LED and indicator lamp go out.
The parking brake is automatically released when you step on the accelerator:
BMW X3 Service & Repair Manual > Automatic transmission: Connection
Connection Minimum set: Mechanical tools AM
NOTE:
(Connection) Reducer M20x1.5 - M18x1.5/For checking the main pressure (3 HP
12) an converter pressure (3 HP 20)/Transmission: 3 HP 12, 3 HP 20
discontinued, available as part of set of special tools only
Storage Location
C3
Connection Min ...