1. Attachments are working again! Check out this thread for more details and to report any other bugs.

Headlights aren't turning off automatically. Somethings not right..

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by priusprobs, Jun 1, 2017.

  1. priusprobs

    priusprobs New Member

    Joined:
    Jun 1, 2017
    4
    0
    0
    Location:
    Houston
    Vehicle:
    2010 Prius
    Model:
    Two
    Recently my headlights stopped going off after I parked and locked the car. Its not a case of me turning the headlights on and off after parking it, or me doing anything differently then usual. My headlights have always stayed in the on position, and when parked, they turn off automatically.

    A few months ago I put in a new door lock actuator in the driver side door, but the lights still went off automatically like normal after that. This all started about 3-4 days ago.

    I've tried many times now starting the car, turning the lights off and back on, then turning it off, and locking the doors but to no avail. The lights stay on no matter what. I'm having to manually turn the lights off now..

    If anyone knows what's going on, please help.
     
    #1 priusprobs, Jun 1, 2017
  2. xliderider

    xliderider Senior Member

    Joined:
    Apr 19, 2012
    7,872
    3,116
    0
    Location:
    Honolulu, HI
    Vehicle:
    2011 Prius
    Model:
    Three
    Ask the dealer to check the settings in Techstream, if the setting has changed they can change it back.

    Also, how old is your 12v auxiliary battery? Things can get weird when your auxiliary battery voltage gets low.
     
    #2 xliderider, Jun 1, 2017
  3. priusprobs

    priusprobs New Member

    Joined:
    Jun 1, 2017
    4
    0
    0
    Location:
    Houston
    Vehicle:
    2010 Prius
    Model:
    Two
    I just replaced the 12v in the trunk about a year ago. But I need to have an oil change soon so when I'm at the dealership i'll certainly ask them to check the settings!
     
    #3 priusprobs, Jun 1, 2017
  4. drysider

    drysider Active Member

    Joined:
    Apr 14, 2008
    823
    332
    1
    Location:
    Liberty Lake WA
    Vehicle:
    2012 Prius
    Model:
    Four
    The auto-off settings might be user customizable. It depends on your model of car. There is no "Never Off" setting. Do the lights stay on indefinitely? You can program delays for: zero, 60, and 90 seconds. It sounds like you had it at zero and it somehow got changed. Check the owners manual under "Customization".
     
    #4 drysider, Jun 1, 2017
  5. priusprobs

    priusprobs New Member

    Joined:
    Jun 1, 2017
    4
    0
    0
    Location:
    Houston
    Vehicle:
    2010 Prius
    Model:
    Two
    I'll check that.
     
    #5 priusprobs, Jun 1, 2017
  6. priusprobs

    priusprobs New Member

    Joined:
    Jun 1, 2017
    4
    0
    0
    Location:
    Houston
    Vehicle:
    2010 Prius
    Model:
    Two
    Checked the manual, just some basic information. Nothing that really helps.
     
    #6 priusprobs, Jun 1, 2017
  7. drysider

    drysider Active Member

    Joined:
    Apr 14, 2008
    823
    332
    1
    Location:
    Liberty Lake WA
    Vehicle:
    2012 Prius
    Model:
    Four
    Mine is on page 593, shown as "Automatic light control system". You need to have either a Display Audio or Navigation system.
     
    #7 drysider, Jun 2, 2017
(You must log in or sign up to post here.)