Shift into four wheel drive and nothing happens light says its in four wheel drive only back two tires work

first time used 4WD on this car?????
what transfer case is there,? key fact #1 not told
JF1A<<< my guess this.
NOT TOLD YOU WHAT THE TIRES ARE ROLLING ON
PAVEMENT, DIRT, OFF-ROAD.. ICE, SNOW OR WHAT.
THE CAR IS NOT AWD
THE CAR IS NOT FULL TIME 4WD
IT IS PART TIME 4WD.
THE USERS MANUAL TOLD YOU THIS


Four?wheeldrive models-Toyota rec-
ommends not using four?wheel drive on
dry hard?surfaced roads, because four?
wheel driving wil l cause unnecessary
noise and wear,and poor fuel econo-
my.

WHAT HAPPENS IS DAMAGE TO THE TRANSER CASE MAIN CHAIN OR FAR FAR WORSE.
or
google
"what part time 4 wheel drive means."
it means there is no center Differential to have AWD

SAME GUIDE SAID

Four?wheel DriveSystemWarning
Buzzer(four?wheel drive models)
This buzzer reminds you that the transfer
mode is not selected correctly.
If the buzzer sounds when you shift the
transfer from "2 WD" to "4H", "4L" to "4H",
"4H"to "4L",or"4L"to "2WD"mode,follow the instructions in"Four?wheel drive
system"on page 239 in Section 1?7.

TO EXIT 4WD, IF SELECTED INCORRECTLY ON DRY PAVEMENT.
GET 1 TIRE OF THE TRUCK ON LOSE DIRT ,GRAVEL ,GRASS. AND SHIFT TO 2WD.
AND STAY OUT OF 4WD UNTIL LEARN HOW PART TIME WORKS.,

4WD IS FOR
DIRT
FOR ICED OVER WHAT EVER.
FOR PACKED SNOW OR DRIFTS.

NOT FOR DRY PAVEMENT AT ALL. OR EVEN WET

Same as all vehicle issues in the past 30 years

Check for codes & google them to see the issue

You have a dash light on --SO --DO SOMETHING

you need to stop both front wheels from turning to see if 4 wd is working
just stopping one side means nothing as the diff action is operating and making the opposite wheel go faster

if the actuateor is vacumed,you might have have a hose that came off or it has a split in it somewhere,check that.or if you have posilock hubs one or both may be wore out or lacking grease,they are easy to remove,just a hex wrench and snapring pliers is all you need,remove and inspect for obvious sighns of wear.

This is designed that way so that you don't damage the transfer case. All four tires need to be going the same speed in order to shift into 4 wheel drive. If you're spinning a tire then one axle is going faster than the other and it would destroy your t-case if it did try to shift. Same for when you're braking. You want to be off the throttle when you shift into 4 wheel drive. Idealy you want to be stopped, it's much easier on the transfer case if you are.

sounds like the shift motor on the transfer case is going bad.

You can shift into and out of 4wd hi in any gear even when vehicle is moving. You must stop and put in neutral to shift into or out of 4wd low.
To see if it is working, go to a dirt field or on the beach if one is available. Put truck in four wheel drive, turn steering wheel all the way one way or the other and stick you head out the driver window and look at the front tire and "PUNCH IT". If the four wheel drive is working you will see the front tire spin. Hope this helps.

Sounds like a n electrical shift actuator is at fault. It would be located on the transfer ccase. Make sure the fuse isn't blown and the wiring is connected at the case.

Sounds like the electronic switch or plunger is going out.

could be the switch very common problem on those