The windshield washer fluid pump began smoking and has burnt electrical smell. Fuses for the washer pump did not blow to disconnect power from the pump. The pump continued to receive power after the key/pushbutton was turned off. This is is potential fire hazard while driving. Also a visibility hazard when the washer pump fails. This vehicle is a City of Cripple Creek, CO police vehicle. This failure has now happened on two of our Police Defenders (Tahoes).