The back door can be locked/unlocked and opened/closed by the following procedures.
Automatic door locking and unlocking systems
Locking and unlocking the back doorRepair
1. STEERING OFF CENTER REPAIR PROCEDURE
(a) Inspect steering wheel off center.
Apply masking tape on the top center of the steering
wheel and steering column upper cover.
Drive the vehicle in a straight line for 100 meters at
a constant speed of 35 mph (56 km/h), and hold ...