Shift Lever Mechanism in M Position
When the shift lever shifts to M, the shift lever is disengaged from the shift lever link/shift lever pivot, and the shift lever link lock pops up to engage with the shift lever bracket base; the shift lever link/shift lever pivot and shifting position in the transmission are held in D.
The shift lever link lock is spring loaded, it pops up in M, and does not engage the shift lever link/shift lever pivot in any position except M.
The shift lever fits into M by using a detent plunger with a spring. When shifting to upshift and downshift positions, the detent plunger is depressed by the detent bracket inner wall, and the detent plunger spring puts the shift lever back into the neutral position. The detent plunger also works in P.