[Mayoo]

Check the Pinch Strip..

From Manual

Auto Reverse:
If an obstacle is detected during power open or
power close, a warning chime will sound and the
liftgate will reverse direction and return to the full
open or full close position. If a second obstacle is
detected, the liftgate motion will stop and the
liftgate will enter manual mode.
A pinch strip is mounted on each side of the
liftgate. If an obstacle is detected by a pinch strip
during power close, the liftgate will reverse direction
and return to the full open position.

NOTE:
If the pinch strip is damaged or removed,
the power close function will not operate.