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

Grille Shutter Algorithm?

Discussion in 'Gen 4 Prius Technical Discussion' started by priusmatty, Apr 5, 2021.

  1. priusmatty

    priusmatty Active Member

    Joined:
    May 22, 2016
    304
    108
    0
    Location:
    Louisiana USA
    Vehicle:
    2020 Prius
    Model:
    L Eco
    Under what conditions does the grille shutter close?
     
    #1 priusmatty, Apr 5, 2021
  2. Elektroingenieur

    Elektroingenieur Senior Member

    Joined:
    Jan 8, 2017
    2,515
    3,268
    9
    Location:
    California
    Vehicle:
    2016 Prius
    Model:
    Three Touring
    It closes when the car is hungry and wants to take a bite out of something.

    More seriously, the Repair Manual (more info) explains, “The grille shutter closes when certain conditions related to the vehicle speed, engine coolant temperature, inverter coolant temperature, ambient temperature and refrigerant pressure are met.” There is a bit more information in New Car Features, under Vehicle Exterior: Exterior Panels/Trim: Grille Shutter System: Grille Shutter Control, but as with many aspects of the car’s design, the details are proprietary to Toyota and its suppliers.
     
    #2 Elektroingenieur, Apr 5, 2021
    jerrymildred, priusmatty and alanclarkeau like this.
  3. priusmatty

    priusmatty Active Member

    Joined:
    May 22, 2016
    304
    108
    0
    Location:
    Louisiana USA
    Vehicle:
    2020 Prius
    Model:
    L Eco
    Thanks!
     
    #3 priusmatty, Apr 5, 2021
    Elektroingenieur likes this.
  4. RRxing

    RRxing Senior Member

    Joined:
    Jul 7, 2009
    2,522
    1,795
    0
    Location:
    NEPA
    Vehicle:
    Other Hybrid
    Model:
    Limited
    Don't remember where this came from...
     

    Attached Files:

    #4 RRxing, Apr 6, 2021
    priusmatty and jerrymildred like this.
(You must log in or sign up to post here.)