My rear wiper has a mind of its own!

ZandT4R

ZandT4R

New member
Hey guys, hopefully someone else had my current issue in the past and knows how to fix it. Recently I have noticed when I open and close the trunk then get in the 4R and start it the rear wiper wipes once. If I do not open the trunk before starting the 4R it does not wipe. I think the door closing make the wiper think it is not in it's rest position so it wipes to reset itself. Anyone know if there is a sensor or something I can replace to fix this? Thanks!
 
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Try opening and closing the rear window. There is a sensor that prevents the wiper from moving when the rear window is down. Try unplugging the battery and see if that resets the wiper. If not, could also be a switch issue.
 
Well raising and lowering the window didn't do squat. I pulled the battery left it off for 10-15 minutes the reconnected it all. As soon as I hooked up the positive terminal the alarm went off and scared the hell outta me. After all that the car wouldn't start! I jumped it off my other car and it fired right up. But after letting it run for a while it wouldn't restart itself without a jump. WTF! So I got it back in the garage and we will see if it starts tomorrow morning. I wonder if disconnecting it some how exploited a bad cell in the battery. It is OEM with 65000 miles and 5 hot summers under its belt. Could it be time for a new one?
 
You usually have to drive the vehicle for a few miles after jumping it. Your battery is gone- you got a decent life out of it. Still not sure how that relates to your rear wiper issue though.
 
Just had my battery crap out on me while driving (due to a bad alternator). One of the things I noticed was that when I would try to start my truck, the rear wiper would start. It sounds like your battery is on it's way out. Good luck!!
 
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