Shift Lever: Notes
Hall effect sensors are mounted in the Shift Lever Module to detect position and movement of the shift lever. A total of 8 hall sensors are used in the shift lever module with 4 sensors dedicated to +/- gear change requests and mode changes requests (A to S mode).
Two sensors are used for detection of the reverse gear position and two for detection of the neutral shift lever position.
The following shift lever positions are possible:
- Reverse (R)
- Idle-Speed (0) (Neutral)
- Forward/Sequential Mode (S-Mode)
- Change positions
+ for Upshifts
- for Downshifts
- Mode Change (A/S Modes)
A spring loaded mechanism holds the shift lever in the forward, idle-speed and reverse positions.
Upshifts and downshifts are made by moving the shift lever in the up or down direction from the spring latched forward position. Moving the shift lever back shifts the transmission up one gear, moving the lever forward shifts the transmission down one gear. The shift lever must be returned to the middle position to engage another upshift or downshift.
Moving the shift lever to the right while in the forward position changes the shift modes from A-Mode to S-Mode and back again.
Programming in the SMG II control unit will prevent impermissible downshift requests.