passenger rear window opens when vehicle starts - JeepForum.com
 
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post #1 of 8 Old 08-09-2020, 07:39 PM Thread Starter
xxxzodiac
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passenger rear window opens when vehicle starts

Helloo all and brand new to forum and new WJ owner.


I have a problem
When I start my jeep the passenger rear window opens. I cannot think of any reasonable reason why. SO I have to think of unreasonable reasons.


anyone have the slightest idea what could be causing this?

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post #2 of 8 Old 08-09-2020, 08:52 PM
Spinifex
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This happens to me occasionally too. It's not common, but it'll sometimes go down 3" or so. I've been chalking it up to a sticky window switch or something but could be noise on the CAN bus or some grounding issue.
Would probably need to see a wiring diagram to have a better guess. But something on the crank/run circuit.
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post #3 of 8 Old 08-09-2020, 10:40 PM
wjpaul
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Could also be a regulator. All of mine failed one at at time, but the windows just dropped all the way into the door. All the new ones have not failed yet and its been years since they were replaced.

02 GCL 4.7-QD-4" IRO CP LA lift-D44/ARB Locker-Bilsteins-Moog stabilizer-JCR slider-Falken 32x10.5
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post #4 of 8 Old 08-10-2020, 03:21 AM
MuloChico
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This is usually caused by broken/shorted wires in the harness going from the drivers door to the body. Usually a ground wire. That is what happened on mine and a few others here. It happens on the drivers door because it gets used most, insulation dries out, and wires get small breaks in them. Use an ohm meter to check for damaged wires then either repair or replace as needed. If you do a search there are more than a few threads on the problem. I don't have a link, but there are also repair kits for this.

Mine was only when the door was partially to fully open, not when closed which pointed to a short.
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post #5 of 8 Old 08-10-2020, 09:16 AM
2oldjeeps
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not a bus problem...its the window ghost...mine is driver rear, when i turn off after 3pm on tuesdays if its cloudy and above 77 degrees parked headed north.
study the wiring diagram, forever. it wont help but it feels good...
yes , ive fixed a ton of wire problems but not this one...
hint if its down it never goes up, only goes down... just told you all i know...

99wj,143,000 miles
00xj,177,000 miles
10hummer3,74,000 miles
98xj,130,000 miles
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post #6 of 8 Old 08-10-2020, 10:28 AM
MN Ben
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Broken wire between door and frame.

Only one kid in history had ever attempted what Benny was about to, and he got eaten.
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post #7 of 8 Old 08-10-2020, 10:46 AM
2oldjeeps
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a broken wire cant cause anything. it takes a closed circuit to make something happen.

wild guesses dont count

99wj,143,000 miles
00xj,177,000 miles
10hummer3,74,000 miles
98xj,130,000 miles
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post #8 of 8 Old 08-10-2020, 02:20 PM
Double E
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Location: Raleigh, NC
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Test the wire in door theory by opening the door, then start it. Find something that changes the behavior, then go to that area to find what about the change causes the window to go down.

'04 Freedom Edition HO & '04 Overland HO (previous '00 Laredo 4.7)
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