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Discussion Starter #1
I found out my mirrors stopped working, both sides.
I checked the fuse, its ok.
What are the chances both motors in the mirrors are broken, I'm guessing its the switch thats broken, is there a way to test this ?
Maybe remove the switch and put a battery on a couple of wires, or crossing the correct wires ?
Can the switch be removed without removing the doorpanel ?
I would like to be sure before I start replacing stuff

Of course it could also be faulty wiring I guess, but wouldn't that trip the fuse ?
 

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The switch pops out of the door panel, but the wire is short so be careful not to damage the plug/wiring. (I would take the dor panel off so you can probe the switch.) Here is the wiring diagram for testing and the switch part number: Standard Motor Products MRS78



 

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I had the same issue and just replaced the switch with one from Rock Auto and all is back to normal now. The switch is super easy to replace.
 

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If they both went out at the same time, very likely to be the switch. Haven't really heard or seen any other issues to cause the mirrors to go out. There's a few issues with wires rubbing thru on the dash frame but I believe that's mostly related to the BCM.
 

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2005 Pontiac GTO CGM A4
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If they both went out at the same time, very likely to be the switch. Haven't really heard or seen any other issues to cause the mirrors to go out. There's a few issues with wires rubbing thru on the dash frame but I believe that's mostly related to the BCM.
Yes, BCM it is- best to wrap the wires that rest on the frame at the rear of the glove compartment.
 

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Discussion Starter #10
Luckely for me it was the switch
Took a few weeks to get here, but its fixed now, thanx for the help.

Now onto my next problem, whiney pulleys, I think its the AC ones, which already I replaced last year, but that's not what this topic was about.
 

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not sure if there is another thread detailing a solution to this, but i had two bad mirror switches i took apart, cleaned up with acetone and a q-tip, and they work as good as new again.

they are not complex. if anyone's taken apart a cheap PC keyboard, the way the buttons work is a pretty similar setup.
 

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not sure if there is another thread detailing a solution to this, but i had two bad mirror switches i took apart, cleaned up with acetone and a q-tip, and they work as good as new again.

they are not complex. if anyone's taken apart a cheap PC keyboard, the way the buttons work is a pretty similar setup.
If that's the case, I may have a perfectly good mirror switch in a drawer in the garage. Mine started acting funny so I replaced it with a used one only to have the same intermittent problems. It hadn't occurred to me to actually check the contact points.
 
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