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Wipers misbehaving…

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761 views 8 replies 4 participants last post by  can  
#1 ·
I have a 2004 PIlot that has this weird quirky wiper issue.

They don't like to park every time and sometimes get hung up partway through their full travel. The intermittent setting moves them to the middle of the windshield and they get stuck there. The other settings work but when I switch the wipers off they sometimes just stop and don’t return to park. If I press the stalk upward, i can manually move them to the park position if I time the release of the switch just right. Im hoping this is a simple “replace the wiper motor” fix and not some gremlin that I’ll need to chase down. Any help on this would be awesome. I looked through old posts but didn’t see anyone with this specific issue.
 
#4 ·
No. They're 100% electric. Upon doing some more research, the driver's multiplex control unit handles speed adaptive intermittent wiper operation and where the wipers "park" if they're mechanically rigged properly. I verified the motor and switch are operating as advertised. So I am going to pick up a used multiplex control unit and report back when I have it installed. Wish me luck!

This old pilot has been a challenge since I got it but it's been fun learning and wrenching on it since it isn't my daily driver.
 
#7 ·
Worn encoder.
 
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#9 ·
It is likely one unit with the motor. On the back of the motor there should be a plate with circular conductive tracks called encoder. The track is worn and cuts the power earlier than the arm lands on its resting place.
 
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