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 doorCoolant (2AZ-FE)
REPLACEMENT
1. DRAIN ENGINE COOLANT
(a) Remove the radiator cap.
CAUTION:
Do not remove the radiator cap while the engine and radiator are still hot.
Pressurized, hot engine
coolant and steam may be released and cause serious burns.
(b) Drain engine coolant by loosening the radiator drain pl ...