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Multifunction Switch, Fog Lamps and Headaches

 
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Old 18 Aug 2016, 07:24 am
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Default Multifunction Switch, Fog Lamps and Headaches

I am new to the forum and to the PT Cruiser, so please forgive me if this has been covered.

I recently had the problem of my headlights stuck on high beams. I changed the entire multi-switch assembly and it cured that problem, but now my fog lamps will not come on at all. I have checked the bulbs, relay on the switch, the fuses and nothing.

Mine is a 2001 Touring.

Is there anything that I have missed?
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Old 18 Aug 2016, 07:27 am
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Default Re: Multifunction Switch, Fog Lamps and Headaches

Check the fuse box under the left side of the steering wheel...I believe it is fuse #8.
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Old 18 Aug 2016, 07:32 am
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Default Re: Multifunction Switch, Fog Lamps and Headaches

LionPT,

Thanks for the reply.

I replaced fuse #8 after I replaced the switch. When I first got the car a few days ago, there was no fuse in #8. I replaced it right away without curing the original problem. I replaced it again after replacing the multifunction, but no go.

Something I also forgot to mention in my original post is that I spent a lot of time last night trying (finally succeeding) change the AC compressor.

This is very strange. Must have got a bad switch.
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Old 18 Aug 2016, 07:37 am
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Default Re: Multifunction Switch, Fog Lamps and Headaches

So the fog lights have never worked since you've owned the car...or only after replacing the MFS..??
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Old 18 Aug 2016, 07:44 am
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Default Re: Multifunction Switch, Fog Lamps and Headaches

After I added the fuse the first time, wiggling the mfs allowed them to come on briefly, but only while wiggling the mfs. After that, nothing.
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Old 18 Aug 2016, 09:19 am
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Default Re: Multifunction Switch, Fog Lamps and Headaches

After what you just said, I'd pull the new switch and look at the electrical connections to see if there's any bad pins that aren't making good contact.
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Old 18 Aug 2016, 09:48 am
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Default Re: Multifunction Switch, Fog Lamps and Headaches

What brand is the new switch, aftermarket or OEM?
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Old 18 Aug 2016, 10:26 am
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Default Re: Multifunction Switch, Fog Lamps and Headaches

Quote:
Originally Posted by rckstein View Post
What brand is the new switch, aftermarket or OEM?
We keep going over this time and time again ...The time period we live in many OE parts are *manufactured in the same manufacturing facility as after market. Most all aftermarket brands at least are up to OE specification or better.



* reading informative topics in past issues over the last 2 years of COUNTERMAN can clearly support the response in this post.
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Old 18 Aug 2016, 11:08 am
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Default Re: Multifunction Switch, Fog Lamps and Headaches

Because Trump

Last edited by sanatanadharma; 09 Nov 2016 at 12:09 pm.
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Old 18 Aug 2016, 06:20 pm
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Default Re: Multifunction Switch, Fog Lamps and Headaches

I ran a thread a few months ago showing how to do a simple repair of the MFS switch using dedicated JB PlasticWeld epoxy. For me, it was an easier, less invasive permanent repair for the fog light function of the MFS switch. For some reason or other, this thread, for really good, reasonably cost easily done fix for an MFS switch, can't be found in the "how to section" so I'll summarize;

In the photo that shows the full innards of the MFS switch. Look for the small white worn part just below the stock. The underside cam surface of this part, comes in contact with a pin in the stalk when the fog lights are activated. This concave cam surface wears to the point where the fog lights no longer activate. Additionally this wear can promote shorting along with the dysfunction. The MFS switch I repaired came from a donor cast off from Bubba_1952. Thanks Dewayne.

The other photos show the product and different stages of the repair. In these photos, because the product is nearly clear, you can see the original wear under the epoxy and the refinished surface.

The product is JB Weld PlasticWeld epoxy, applied like thick paint with a small brush on the worn cam surface. Sets in five minutes, cures in one hour. I used it in lieu of resurfacing the worn portion of the white small part in the photos with metal.

Because the product has a quick set of five minutes, it's easy enough to control the surface flow with gravity during the short setting time. The end result after a few brushed on layers of JB Weld Plastic and redressing, is a permanent plastic surface, harder than the original plastic but not as aggressive to promoting wear on other plastic parts coming in contact as a metal surface repair. Additionally, it's easily redressed to conform to the true concave shape of the original cam surface.

I hope this summary and the photos will help you to a reasonable cost, permanent noninvasive repair.

The repaired MFS switch, reinstalled in SOOO BIG, actually has a smoother feel when the fog lights are activated than the replacement MFS in my son's PT.

Happy PTin', ptprice

The final solution MFS 001.jpg

The final solution MFS 007.jpg

The final solution MFS 008.jpg
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Last edited by ptprice; 18 Aug 2016 at 06:28 pm.
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