Fifth bow down

The STC control module sends VR-bus message "Hydraulic valve 2 OFF" and "Hydraulic valve 3 OFF" as well as "Hydraulic valve 1 ON". When hydraulic valve 1 is activated, pressure from the pump is connected to pressure to the cylinders and the pistons are pulled in and close the fifth bow. When the STC control module has sent VR -bus message "Hydraulic valve 1 OFF ", hydraulic valve 1 assumes resting position and the movement of the fifth bow stops. The STC control module then sends VR -bus message "Hydraulic valve 2 ON" so that the first bow is pressed against the windscreen frame to facilitate locking.