I sprayed my rear wiper arm with WD-40 because it wasn't touching the glass. Now, it wipes great, but when I turn the wiper off, it doesn't return to the cradle correctly. When this happens, the wiper will not work until I physically push the arm down. How can I fix this problem?
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I found some information that indicates that a dirty ground connection on the motor could be causing the issue. That, or the control board is shot. You might want to clean off the ground connections with some fine sand paper (400 grit) to see if that fixes the issue.
I have also found threads that suggest using lithium grease to lubricate the moving parts of the motor assembly (WD40 is a desiccant, not a lubricant). Good luck!