Wipers on 2000 Jeep Cherokee travel too far

There is a tool for that, to take the spring tension off the arm

You can still wrestle it off, by lifting the arm off windshield
& on the arms right side & under it ,is a small tab you slide
out.

Then the arm comes off & you can reinstall in a different place

I have the same problem with a 2001 Legacy wagon. The problem is not as simple as the solutions above. Mine are adjusted to park as low as possible when turned off. Even so, the blade on the drivers side goes all the way off the windshield. The Subaru dealer wants to replace the whole wiper blade transmission for about $450. Looking online it seems to be interconnecting arms and pivot points that connect the motor to the wiper blade arms.

The wipers are not installed correctly. Remove and reposition the wiper arms ,so they do not hit the side of the outside window pillar,when set to high speed.

You should check your fuses first. What may of happened is that the wiper motor could be frozen if the wiper arms are frozen in ice. Another thing that may of happened is that the wipers were used to clear the windshield instead of clearing it manually. When that is done if there is too much snow or it is a heavy snow the wiper motor will burn up or go bad due to the fact that it does not have enough power to do such things.

Did you plug them all back in? lol j/p

Do your blinkers and your back windshield wipers work? It's either electrical or mechanical. Turn them on and poke around to see if you hear the motor doing anything. If you hear it, it's probably a broken linkage. If not, start with the fuses and work from there.

It's possible that by unplugging the battery and then plugging it back it, the fuse for the wipers received an electrical surge, blowing it. Consult your manual to see where the fuse for your model is and check to see if it's blown.

See if this is close enough...It's mounted to the bottom of the washer reservoir...Yep...right there on the bottom!!.

You have a motor for the front and rear washer. Check the fuses. If the intermitted wipers does not work, there is a relay under the dash near the steering colum that needs to be replaced.

the little pump inside the washer fluid reservoir is bad, replace it

The wipers are supposed to sweep after washer fluid for a while,but if that just started recently then the wiper control module which is part of the delayed wiper

Can you here the motor running? If not maybe a fuse is blown or the wiper motor is bad.
Can you move the wipers by hand? If you can then the linkage either popped off or is broken.