Check the play of the release bearing by spinning it by hand. If there is excessive play or noise, replace the release bearing.

NOTE: The release bearing is packed with grease. Do not wash it in solvent.
Instrument Panel
This chapter describes the buttons, indicators, and gauges that are used
while driving. ...
Disassembly
Raise and support the vehicle.
Remove the rear wheels.
Release the parking brake, and
remove the brake drum.
Remove the tension pins (A) by pushing respe ...
Rear Defogger/Heated Door Mirror* Button
Press the rear defogger and heated door
mirror button to defog the rear window and
mirrors when the ignition switch is in ON
.
NOTICE
When cleaning the inside of the rear window, be
careful no ...