AC blows cold air when car stopped, hot when moving

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by HKz, Jan 3, 2024.

Page 2 of 2
  1. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    27,310
    17,927
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    Does the servo just have a gear sticking out, or some more elaborate linkage with a limited range of travel?

    If it's a linkage with a travel range, I'm not sure what to suggest; it should probably be lined up about like the old one was.

    If it's just a gear, there's a chance this could be easy: the gen 3 position encoding is just done by counting pulses, so it's possible the system can discover on its own where the door stops moving, and then reckon its position from there. But I don't know for sure that's how they've done it. With the older, gen 1/2 style of position encoder, it wouldn't even have been a possibility.
     
    #21 ChapmanF, Oct 8, 2025
    HKz likes this.
  2. HKz

    HKz Junior Member

    Joined:
    Nov 19, 2020
    44
    15
    0
    Location:
    Mesa, AZ
    Vehicle:
    2011 Prius
    Model:
    Two
    well I still have the original in pieces, one from the junkyard and the new one is just dangling in the Prius but connected (the Prius locks you out from using the HVAC for about a minute after startup if you don't have the servo at least plugged in) and it appears it is just a gear. I'll grab some shots later
     
    #22 HKz, Oct 8, 2025
(You must log in or sign up to post here.)
Page 2 of 2