Welcome to Our Community

Wanting to join the rest of our members? Feel free to sign up today.

Sign Up

Rear Window Defogger problem

Discussion in 'Gen II Prius Care, Maintenance and Troubleshooting' started by TSaxman28, Jan 25, 2011.

Social Buttons

  1. TSaxman28

    TSaxman28 Wandering Minstrel

    Joined:
    Jun 24, 2007
    Messages:
    42
    Likes Received:
    1
    Location:
    NH
    Your Vehicle Year:
    2007 Prius
    A couple of days ago I noticed that one of the elements in the upper rear window defogger/defroster isn't working. It's the fifth one from the bottom I believe. All the other elements on the top and bottom seem to be working correctly.

    Is there a way to correct this without taking it to the dealer?

    Thanks.
  2. Troyroy

    Troyroy Member

    Joined:
    Sep 23, 2010
    Messages:
    373
    Likes Received:
    30
    Location:
    Troy, NY
    Your Vehicle Year:
    2012 Prius
    Model:
    II
    Your local auto parts store should sell a repair kit for this........they are very common.....
    1 person likes this.
  3. Patrick Wong

    Patrick Wong DIY Enthusiast

    Joined:
    Mar 8, 2008
    Messages:
    12,897
    Likes Received:
    3,069
    Location:
    Green Valley, AZ
    Your Vehicle Year:
    2007 Prius
    Model:
    N/A
    The repair kit consists of conductive paint. The procedure is for you to place masking tape above and below the broken part of the fifth element, then use the paint to bridge the gap.

    If it is not obvious where the broken portion of the element is located, you could use a voltmeter to locate it. Make the Prius READY, then turn the defroster on. If you place one voltmeter lead at one end of a good element, and start to move the other lead across the element, you will see voltage change smoothly. (Place aluminum foil between the voltmeter probe and the element, to avoid damaging the element.)

    Then try the same exercise on the broken element. Place the voltmeter leads at either end of the element and you should measure ~14V. Then start moving one lead from one end to the other. You'll continue to see 14V until the break, at which point the voltage will drop to 0V.
    1 person likes this.
Similar Threads: Rear Window
Forum Title Date
Prius v Care, Maintenance and Troubleshooting Prius V Rear Window Needs replacement Jul 13, 2014
Gen II Prius Care, Maintenance and Troubleshooting Remove rear door window? Apr 19, 2014
Gen III 2010+ Prius Care, Maintenance and Troubles Can't roll down rear window from driver controls Apr 18, 2014
Prius c Care, Maintenance and Troubleshooting Noise with rear windows open Feb 10, 2014
Gen III 2010+ Prius Main Forum Why is the small window below the rear spoiler so dark? Feb 8, 2014