My 2002 Toyota Highlander locks do not work with the key except for rear hatch door.

need to check latch mechanism for damage or jammed

Question edited for clarity.
Question moved to year category.

All those covered by Fuse 23 :>)

Toyota Highlander (XU20; 2001-2007) fuses and relays

Fuse-Box.info https://fuse-box.info > toyota > toyota-highlander-xu2...

The fuse box is located on the left side of the instrument panel, behind the cover to the left of the steering wheel. The location of the fuses in the ...

Toyota Highlander (XU20; 2000 - 2003) - fuse box diagram

Auto Genius https://www.autogenius.info > toyota-highlander-xu20...

Aug 8, 2016 - Toyota Highlander (XU20; 2000 - 2003) - fuse box diagram. Year of production: 2000, 2001, 2002, 2003. Engine compartment.

..

you'd better call a mechanic in your place.

the switch is bad on the rear hatch cylinder

I had the same problem with a Toyota truck, either the key is worn or the lock itself is, you can try slightly moving the key back and forth while turning it in the lock. Do not apply too much pressure or you'll risk snapping the key off. to fix the problem completely, I would try having a new key made, if that doesn't work, get new locks, have them keyed to match by a locksmith.

This is just a suggestion. Check inside the back hatch door. On either side there are little doors (hatches) close to the floor. I'm guessing on the right side might be the spot. But where ever you look there should be a picture of a windshield wiper on it. On another car yesterday I saw a filler spot behind the front grill ahead of the radiator.

In my vehicle there is a botton in the glovebox that gets accidently switched off. there is a child safety button to prevent automatic door closing...highlander may have this switch as well.

Open the remotes up...Are the boards the same...?

the unlock or popper for the door needs to be replaced. the door should work with a key.

Try pressing down on the trunk /hatch and at the same time turn the key to try and open it. It might take a lot of downware pressure to finally get it to come open.