2012 Toyota RAV4 Owners Manual - Page 286

3 -1 . U sing t he a ir c ondit ioning syst e m a nd de fogge r Rear w indow and outside rear view mirror defoggers The rear window defogger is used to defog the rear window. The outside rear view mirror defoggers are used to remove frost, dew or raindrops from the outside rear view mirrors. On/off The defoggers will automatically turn off after approximately 15 minutes.