HOW TO OPEN HATCH BACK LOCK, IF ITS BROKEN - 2001 Toyota Sequoia

I would guess that either the wiring to the hatch lock is broke, or the lock or linkage isn't functioning. Have someone stand at the back of the car when locking the doors and listen for the latch actuator to click, if it does click then it's probably a broken plastic piece on the linkage, if it doesn't then either you have some bad wiring or the actuator itself may be bad.

Bad power lock in door.

on the inside of the tailgate, at the top, there are two rubber grommets through which the wiring passes through from the body to the tail gate. I think the lock wires go through the one on the driver's side. Over time some of these wires break due to constant back and forth of the opening and closing of the tailgate.

In your case, when you open it 3/4 way open, the broken wire just barely makes re-contact with the other broken end.
I found the best solution is to remove the electrical connector from the tail gate, remove the grommet to find the broken wire, then solder a new piece and use heat shrink tubing to insulate it.

Is it the back hatch? Can you pull the rod on the broke side & pull handle at the same time?

The lock assy

I would guess that either the wiring to the hatch lock is broke, or the lock or linkage isn't functioning. Have someone stand at the back of the car when locking the doors and listen for the latch actuator to click, if it does click then it's probably a broken plastic piece on the linkage, if it doesn't then either you have some bad wiring or the actuator itself may be bad.

My back hatch would not open but it appears the lock was sticking and the return spring to the handle is broken. We used the key to unlock the back door and then door opened. Then husband sprayed WD 40 in all the lock holes. Now once we open the door we have to push the handle back down as return spring is still missing but the door opens :) . My van is a 2002 Ford Windstar.

Remove panel on the inside of the hatch, release lock from the inside then check the lock solenoid for power, check for broken link to lock, repair or replace it.

1998 Blazer. hatch window lock keeps making a noise. like its trying to unlatch.i open window it stops.

there could be a cable running from motor to lock which might be broke or the moto might be worn out causing it to operate but not work properley