Toyota PRIUS C 2019 Manual page 129

Rear door child-protector lock
The door cannot be opened from
inside the vehicle when the lock is
set.
Unlock
1
Lock
2
These locks can be set to prevent
children from opening the rear
doors. Push down on each rear
door switch to lock both rear doors.
PRIUS c_U
3-2. Opening, closing and locking the doors
129
3