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Registered
1994 Deville
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4 Posts
Discussion Starter #1
I have a 94 Deville and the windshield wipers won't turn off. They do not work on intermittent but work on high and low. The only way to turn them off is to turn the car off.

Does anyone know what this could be?
 

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2002 DeVille
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38 Posts
Relay? Did u try calling dealership and ask service rep? What an embarrassing problem lol.. sorry for u man.. hope things turn out okay...
 

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Super Moderator
White Diamond '03 DHS (with DTS floor shift)
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87,112 Posts
In the mean time, just pull the plug on the wiper motor on the firewall and apply Rain-X to the windshield.
 

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1994 Deville
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4 Posts
Discussion Starter #5
Well they turn off when I turn the car off but it is so annoying! I have heard it could be some kind of circuitboard?
 

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1992 STS / 2005 MB G500 / 2003 STS / 2006 XLR-V
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11,694 Posts
You should follow Ranger's advice anyway. The added wear on the wiper motor from being on all the time (if I understand correctly), not to mention the micro-fine scratches you are invariably putting in the windshield are reason enough.
 

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1992 Deville
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3 Posts
My 1992 DeVille has this same problem. If I use the windshield washer or turn on the wipers, they won't shut off. Also there is no intermittent or MIST speed. When I turn the wiper switch to OFF they keep going but when I shut the car off and then restart, the wipers park and stop. It began gradually a while ago - when I would use the washer, the wipers would not automatically shut off. I would set the switch to MIST and they would keep going on LOW speed for a while but eventually they would go into MIST mode and at that point I could shut them off. Now they will not stop until I kill the motor. The local dealer says the module is not available, on indefinite backorder. Plus I am not certain if it is the switch or the control module.

I understand that I can unplug the wiper motor under the hood but here in Florida where it rains on/off unpredictably that is inconvenient. What do you think? Is it the module or the switch? I heard that if the wiper fuse is removed and the blades keep going, then it is the module. If they stop, it is the switch. Any truth?

I am considering installing an inline toggle switch, basically hot-wiring the switch so I can kill the wiper motor manually while driving. Would this work? If so, which wire should I interrupt?

Thanks for any and all replies!

Keith in Florida
 

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Super Moderator
White Diamond '03 DHS (with DTS floor shift)
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87,112 Posts
I think if you pull the fuse, the wipers are going to quite no matter where the problem is.
 
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