Windshield wipers cycle once during startup or ignition off

[umbertob]

Besides checking for the obvious (dirt over the rain sensor, if fitted, although that's more likely to cause random wipes), I'd say your car audio installers definitely tapped into something they were not supposed to tap into.

 

[Vermouth]

"BTW - what do you do for a living? I'm a general surgeon. Suck on that and eat it "

WHAT?

 

[Houm_WA]

I think he mean to type:

"I'm a GENITAL Surgeon. I suck on that and eat that."

 

[mustbeaudi]

Rotflmao!

 

[cdodkin]

Bluebird has it right - wiper stalk has ben nocked up one notch into AUTO mode - i.e. the car decides when it wipes the windshield.

Moving the wiper stalk down one notch switches it OFF.