Here's an alternative write-up (though almost identical) to the one
@bobthetj03 posted:
My 2003 Jeep Wrangler started magically turning on the fog lights while I had it parked. This issue kept getting worse until I could not get the lights to stay off without touching the switch. At first I was able to put my left turn signal on and this was just a temporary fix. I went to the dealer and they told me the switch would cost me $260 this is why I wanted to fix the existing switch. I want to keep my jeep nice and running another switch somewhere else would just bug me.
This write up includes removing the switch from the steering column.
Tools Needed
First you need to remove the steering the column plastic cover there are two screws in the holes closest to the steering wheel. Phillips
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Now you can remove the two T20 screws on top of the multifunction switch. There are two harness plugs going into this switch which both have a red tab that need to be pulled out (but not completely) in order to be unplugged.
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Now the entire switch assembly can be removed.
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Next you need to remove the relay, two T10 screws, and the wire plug which has two black wires on it.
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View attachment 10688 This image has been resized. Click this bar to view the full image.
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Now you need to carefully used a small flat head work your way around the piece being careful not to break any plastic.
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Once this is done your switch is exposed and you should be able to see your problem.
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A closer look will show you this.
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Under the cover you can see what all is happening and why your fog lights will not say off. The white plastic piece has worn down and can no longer lift the metal piece far enough to stop the circuit.
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If this seems to be your problem then your fix will be easy. Next you need to remove one more T10 screw. This will now lift out easily but before you do this remove all the pieces on top that are not secured down.
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Now you will see the the lifter completely exposed. Pull it up and lightly press it down so you can remove it. I had to slide mine to the left.
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Now you are ready to put some JB Weld on the part to build it up to its original length. (I used JB quick Weld but either will work) Before this step you might want to clean the part to ensure the glue will stick. I used side cuts to clean the part up from where it had actually smashed/melted down.
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After the glue has dried you can now put it all back together and test it out.