Is there a way to turn off the mirror heaters when not needed? Or is there a way to install a switch so I can turn them on/off as needed? I'm tired of them baking the rain water on! Thanks

 

Sound to me like you might have a bigger problem than the rain baking on. Last thing I read on the mirrors was that they are suppose to only come on when the temperature is below a certain point, freezing I think.

 

I have an 03 F250 with the heated towing mirrors on it. I've seen several posts with guys asking the same question...but I don't have that problem.

I've owned the truck since Feb of 07 and have been through two winter periods and they're pretty handy. I've scraped ice off the windshield but never had to touch the mirrors.

The only time I've seen water spots on mine is when I wash it and don't dry them before the sun bakes the spots on. If I remember right, the heaters engage when the temps fall below 35...there's no switch for them.

Joe

 

I was thinking about adding heated mirrors to my truck. I have the XL package and wonder about feasible this is. Perhaps I would have to install a switch to prevent them from heating all the time. Anyone know where this sensor is and/or the cost of it?

 

All you need to do is put a switch inline with the power wire to the mirrors....When you need the heat, turn on the switch. Simple fix!

It's a light blue/pink wire going to the mirrors.

 

Lots of guys rewire them through an upfitter switch.

No, they don't come on at a certain temp. They are on all the time.

I don't have the water spot problem, but then it never rains in California.

Bill

 

Good to hear which wire it is! My driver side one did not work this past winter, and with me moving to Ohio tomorrow, I now know which wire to look for power on!

 

Thanks for the replies. BPofMD do you know where it is easy to fine that wire,in the door jam or on the back of the fuse box. Thanks for the info

 

I thought the mirror heaters only came on when your heat was on in the truck???

 

The heaters may cause water spots on the mirrors but when it is raining, the heaters also keep the mirrors clean. My other trucks don't have heated mirrors and the mirrors are worthless at night in the rain because they are covered with water droplets. The heaters keep the mirrors clear in the rain.

 

The mirrors are heated all the time. If you have a spare upfitter switch the fix is easy. Replace the mirror heater fuse with a blown fuse and then attach the output wire from the upfitter switch to the load (mirror heater) side of the fuse. Total parts requirement is about 8 inches of wire. To undo the mod, disconnect the wire and replace the blown fuse. I suspect that the heaters will last quite a bit longer this way.

 

Thanks for the info PupnDuck I will do that.