Where is the reservoir for rear wipers on a 1993 toyota 4runner

Sounds like the switch .

check you 93 toyota 4 runner ignition coil see if you can solve this problem

The rear window washer gets its feed from the front reservoir. One reservoir feeds both windows.

When u fill; up the reservoir means u have a fluid leak!
Did u check where could be the leakage coming from?

on the wiper arm, there is a cap. remove cap and there is a nut underneath, remove nut spray wd40 oil on the threads that are exposed, then slowly wiggle arm and pull simultaneously to remove.

If your rear wiper, fluid wash, and rear defrost stopped working at the same time try this first before taking it to the dealer. Start the 4Runner and lower the rear window glass. Wait a few seconds and raise the rear window. Turn the engine off and wait a few seconds. Restart the engine and see if this helps. I had the same problem after I had my drive belt replaced and the shop disconnected the battery cable. When the battery cable is disconnected it causes the rear wiper, fluid wash and defrost to stop working. Good luck!

Have the coil or coil pack checked out..it may have faulty windings, and when it warms up from current flow it goes out.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

I took it to a mechanis, who is a friend of mine. Toyota made that rear windshield wiper custom. So he took off the stopper and the screw in lock and I bought a 13" blade and we put the attachment on that came wih the wiper and slid it on to the arm.

It is difficult to access but it is possible to remove i use an extra long needle nose pliers

check the window shield wiper in the right position, you must put it into the clamp.