I have a 2012 Mustang Gt. My windshield wipers will automatically go on once I start my car even with them being turned off. I pulled the fuse out until I can find out what my problem is. I have been doing some research online and still cannot tell. I was going to start by replacing my windshield wiper switch. Does anyone have any input or know how to possibly fix this problem?

 

It's most likely a bad switch, a short to ground, bad connections to the windshield wiper motor, or a bad windshield wiper motor. Some of these tests are somewhat complex. Ford dealers should have the test equipment to do the job, but will probably charge $$$$$.

If the switch is relatively inexpensive, then that would be a way to start, but just throwing parts at the problem can get expensive unless you get lucky.

You might want to check with an independent repair shop and see what they say.

 

the switch is now referred to as the steering column control module on some fords (not sure it mustang is included) however on the ones where it is that module, steering wheel removal/air bag system deactivation is required to replace the module as it is larger than the multifunction switch design of the previous years.

 

If you purchased the extended warranty, go to your local ford dealership and have them check it out. If you didn't then do as Art said and find a independent repair shop and have them check it. Trying to fix it piece by piece will end up being more expensive in the long run unless you end up getting it fixed within the first few pieces.

 

Are you sure they are off and not set to intermittent?

 

Having a similar problem with mine on my 2013. Figure out what it was? I already installed a new column switch. Thinking it's the motor.

 

Hi everyone. Has anyone solved this problem? My 2010 Mustang GT also activates the wiper on first start.

 

I joined the forum to find out how many others are having this problem. My 2012 is having the same issue. (Wipers come on just because car is started). They aren't left on, they definitely are in the off position. I took it into the shop and they said that it is the multi-function switch (arm) that controls the wipers as well as the turn signal. The shop tried to order from Auto Zone and other parts dealers in the area and they were all out of stock. Then they went to Ford to order the part and was told that the part is out of stock and there are 2000+ people waiting for it. I've tried looking online and every place I look says out of stock. Village Ford Parts says it's a discontinued item. Anybody have any ideas? Someone said go to a junk yard and get one, but how will you know if it works?

 

Disclaimer: I own an 08, so I'm not sure if the design has changed sufficiently.

Last year I had all kinds of crazy stuff going on with my wiper motor and spray: both wipers and spray would come on whenever they wanted (a lot). Turns out water had built up in the cowl area in the cavity where the wiper motor resides and the whole wiper motor assembly was waterlogged and saturated.

I got lucky. I removed the motor assembly, took it apart (the internal circuit board was all wet), dried it all out, doused it with WD40 to wick the water away, then some dielectric grease for good measure. Put it all back together, applied dielectric grease to the electrical connector, re-installed and re-connected and...trouble free for a year. I actually have a replacement motor on-hand, but haven't had to swap it out *knock on wood*.

The drain plugs for those cavities under the cowl are pretty famous for *not* draining properly, resulting in water pooling; either affecting the wiper motor, or pushing water into the cabin via the cabin filter. Not the most brilliant Ford engineering.

It may also be your switch, of course, but in my case things were getting shorted out at the wiper motor PCB and that was what was causing the issues.