Function of the electric parking brake (releasing automatically)
The electric parking brake is released when the following conditions are fulfilled:
The driver's door is closed.
The engine is running.
The transmission is in position
or 
and you depress the accelerator pedal or you shift from transmission position 
to or when on level ground. If the transmission is in position
, the tailgate must be closed. The seat belt tongue is inserted into the seat belt buckle of the driver's seat.
When the electric parking brake is released, the red 
indicator lamp in the instrument cluster goes out.