2012 Wipers Inop Electrical Glitch - JeepForum.com
 
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post #1 of 5 Old 12-10-2019, 08:51 AM Thread Starter
Ex-Calif
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2012 KK Liberty 
 
Join Date: Apr 2015
Location: Cincinnati
Posts: 75
2012 Wipers Inop Electrical Glitch

New glitch happened last night for the first time in 5 years of ownership.

Stopped at a store turned off headlights and wipers as I usually do before shutting off engine. Night time, drizzling rain and outside temps around freezing maybe 34*F.

Came out 20-30 minutes later. Started fine, headlights on - fine. Wipers on - nothing...

Rear wiper - fine
Press down for intermittent front - nothing
Pull back for wash & wipe - wash fine - wiper nothing
Cycle wiper rotating switch several times - nothing

Pulled out and drove to a different spot. Shut down and tried it all again - nothing.

Suspecting a fuse or something I starting driving home about a mile later came to a red light and cycled the rotating wiper switch and the wipers came back to life...

KK electrics are just plain dodgy - All my electrical glitches have happened on the hottest day of summer or at freezing to sub-freezing temps.

Anyone else have this happen?


2012 Liberty Sport
WWII - Horses vs. Jeeps - 'nuff said...
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post #2 of 5 Old 09-15-2021, 02:43 PM Thread Starter
Ex-Calif
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2012 KK Liberty 
 
Join Date: Apr 2015
Location: Cincinnati
Posts: 75
This problem went dormant for about a 15 months but started happening again this year.

I figured out that if a pull over, leaving the engine running and the wiper switch on, and yank on a wiper blade the wipers seem to "unstick" and start operating normally.

Most of the time the wipers work fine so I rule out relays, fuses and stem switch. I think the wiper motor may have a dead spot in the "park" position.

Anyone changed a Jeep Liberty wiper motor? Difficult to do?

2012 Liberty Sport
WWII - Horses vs. Jeeps - 'nuff said...
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post #3 of 5 Old 09-15-2021, 06:41 PM
Rob K
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1995 XJ Cherokee 
 
Join Date: Sep 2007
Location: River Falls
Posts: 2,237
It sounds like you have the problem narrowed down pretty well. If you have to pull start the wipers to get them to go it sure sounds like there is a linkage, motor or possibly wiring problem. Some things come to mind. Possibly some water intrusion in the joints of the linkage assembly inside the cowling or even the motor itself. They may have some rust or corrosion which is causing things to bind and a pull start gets things moving. Recently I learned there is a park switch in the motor that turns the motor off when the wipers are at the bottom of the windshield. I wonder if that switch has anything to do with the problem. Also it's possible there is a bad wiring connection and jostling things is enough to get it going again. What ever is causing it you'll have to pull things apart and investigate. I've never had a KK apart so I'm not sure. My older Cherokees were pretty simple. That doesn't help you though.
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post #4 of 5 Old 09-17-2021, 05:37 AM Thread Starter
Ex-Calif
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2012 KK Liberty 
 
Join Date: Apr 2015
Location: Cincinnati
Posts: 75
Quote:
Originally Posted by Rob K View Post
I've never had a KK apart so I'm not sure. My older Cherokees were pretty simple. That doesn't help you though.
I found a couple of YouTube videos on the older Liberty. It appears all the wiper gear is in the cowl under the wipers and splash plate at the base of the windscreen.

Looks really easy to get to for a change. Old school cars would require a day upside down under the dash - LOL.

Wiper motor doesn't look that expensive either.

2012 Liberty Sport
WWII - Horses vs. Jeeps - 'nuff said...
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post #5 of 5 Old 09-17-2021, 07:13 PM
Rob K
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1995 XJ Cherokee 
 
Join Date: Sep 2007
Location: River Falls
Posts: 2,237
The Cherokee I did was the same. Unscrew the cowling cover and everything was accessible. I also seen the motors weren't to bad on price.
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