Rktennis
Posts: 47
Joined: Wed Jul 20, 2011 5:20 pm
Delivery Date: 0- 0-2011

Update! Success! Help with rear wiper issue

Wed Oct 09, 2019 7:22 pm

Update: $30 used wiper motor purchased from ebay. Removed rear hatch panel, had difficulty with removing electrical connection, swapped out motors, and rear wiper now working correctly. My motor looked much newer than the one I bought, but I guess there was a short somewhere. Took about an hour, but I’m pretty novice. I’m very happy since I have to go out and we’re getting a lot rain here in Atlanta. Thanks for the input!

Hi, I’ve noticed my rear wiper is not working correctly (2011). It will move in spurts, halfway then stop, another half, then pause. The pauses can be a few minutes.

I took the arm off and didn’t see anything wrong. I noticed that the motor is not constantly on. Is there a switch or fuse I should look at?
Last edited by Rktennis on Sat Oct 19, 2019 6:49 am, edited 1 time in total.

goldbrick
Posts: 624
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: Help with rear wiper issue

Thu Oct 10, 2019 10:58 am

You'd have to check the schematics to be sure but I would guess that if any fuse or switch failed, the motor would not work at all.

I suspect the problem is either in the motor or possibly the gear/linkage driven by the motor (if there is one it is probably built into the motor assembly) or possibly a combination of both.

Does it work correctly with the wiper arm removed (ie with a very small load on the motor)?

Rktennis
Posts: 47
Joined: Wed Jul 20, 2011 5:20 pm
Delivery Date: 0- 0-2011

Re: Help with rear wiper issue

Thu Oct 10, 2019 1:48 pm

No, it is still intermittent even when the wiper arm is off.

goldbrick
Posts: 624
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: Help with rear wiper issue

Thu Oct 10, 2019 9:08 pm

It could still be an electronic fault but I think it more likely that some teeth are missing from a gear inside the motor assembly. A lot of the gears for this type of thing are plastic and if a few teeth are missing or damaged it could cause a pause when those teeth are engaged.

If it were me, I'd try to find a replacement motor assembly. I haven't done anything to my Leaf but on my other cars, the plastic cover on the inside of the hatch more or less snaps in/out after a few screws are removed. Once the cover is removed, the motor and its assembly should be easily accessible.

Rktennis
Posts: 47
Joined: Wed Jul 20, 2011 5:20 pm
Delivery Date: 0- 0-2011

Re: Help with rear wiper issue

Fri Oct 11, 2019 8:01 am

I’ll check it out. Thanks. Hopefully I can grab one cheap from ebay to try.

User avatar
Nubo
Posts: 5409
Joined: Fri May 28, 2010 11:01 am
Delivery Date: 31 Oct 2014
Location: Vallejo, CA

Re: Help with rear wiper issue

Fri Oct 11, 2019 2:20 pm

The wiper control system is more complicated than you might think and involves the Body Control Module, CAN message traffic, etc... If a quick inspection doesn't turn up clues I'd suggest getting the service manual or taking it in for diagnosis.

Image
I noticed you're still working with polymers.

goldbrick
Posts: 624
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: Help with rear wiper issue

Fri Oct 11, 2019 6:06 pm

This video shows a front wiper but I bet the rear is about identical except there is no linkage involved.
https://www.youtube.com/watch?v=Pa4jv8FvjAQ

Rktennis
Posts: 47
Joined: Wed Jul 20, 2011 5:20 pm
Delivery Date: 0- 0-2011

Re: Help with rear wiper issue

Fri Oct 11, 2019 6:22 pm

Well, I’m planning on buying a motor on eBay and replacing (https://www.ebay.com/sch/i.html?_from=R ... acat=33657)

The new motor is only about $40, so I won’t be out too much. It is weird how it’s intermittently working though.

css28
Posts: 48
Joined: Fri Aug 02, 2019 2:14 pm
Delivery Date: 02 Aug 2019
Location: Bloomfield Twp, Michigan

Re: Help with rear wiper issue

Fri Oct 11, 2019 6:49 pm

Wouldn't it make sense first to back probe the connector to the motor to see if the voltage to it is constant or intermittent?
Rktennis wrote:
Fri Oct 11, 2019 6:22 pm
Well, I’m planning on buying a motor on eBay and replacing (https://www.ebay.com/sch/i.html?_from=R ... acat=33657)

The new motor is only about $40, so I won’t be out too much. It is weird how it’s intermittently working though.
- Chris
----------
2017 SV, purchased 8/10/19, Coulis red

Rktennis
Posts: 47
Joined: Wed Jul 20, 2011 5:20 pm
Delivery Date: 0- 0-2011

Re: Help with rear wiper issue

Fri Oct 11, 2019 6:58 pm

Very good point, I wish I knew how to do something like that! I’m good at following directions on YouTube, but sadly not as good at basic electrical skills!
css28 wrote:
Fri Oct 11, 2019 6:49 pm
Wouldn't it make sense first to back probe the connector to the motor to see if the voltage to it is constant or intermittent?
Rktennis wrote:
Fri Oct 11, 2019 6:22 pm
Well, I’m planning on buying a motor on eBay and replacing (https://www.ebay.com/sch/i.html?_from=R ... acat=33657)

The new motor is only about $40, so I won’t be out too much. It is weird how it’s intermittently working though.

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