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OEM Heated Seat mods?

Discussion in 'Gen 3 Prius Accessories and Modifications' started by ladz, Dec 11, 2011.

  1. ladz

    ladz New Member

    Joined:
    Jan 15, 2011
    2
    0
    0
    Location:
    Seattle
    Vehicle:
    2010 Prius
    Model:
    IV
    I have a 2010 IV with the heated seats. They work fine from a number-of-watts standpoint, but the on and off cycling is infuriating. They get plenty warm enough, then right when the temperature is great they turn off for several minutes and get cold again. This isn't acceptable. I want hot buns! :D

    I found a post by tumbleweed that included the wiring diagram, post ID 92410

    This seems to indicate there are one or two boxes "Seat Heater Control Sub-Assembly LH" and RH. Also it seems like there is not really a thermostat in the seat itself, but instead just a timer. Does anyone know where these boxes are so I can "fix" them?
    I do hobby EE so it shouldn't be tough to augment, modify, or replace them for proper temperature control.
     
    #1 ladz, Dec 11, 2011
  2. Bob K.

    Bob K. New Member

    Joined:
    Oct 13, 2009
    23
    4
    0
    Location:
    Baltimore, MD
    Vehicle:
    2010 Prius
    Model:
    III

    It appears that this is all one piece located directly behind the two heated seat switches.
     
    #2 Bob K., Dec 12, 2011
  3. Jay85

    Jay85 New Member

    Joined:
    Oct 26, 2009
    8
    0
    0
    Location:
    L.A.
    Model:
    IV
    I'm also infuriated by the on and off cycling of the heated seats, but I'm no wiz at mods (never even thought about modding my own car). Did you do this mod and was it successful? Is this something I can do, or should I take it to a shop? Are there any risks in taking the timer out?

    Thanks
     
    #3 Jay85, Oct 12, 2012
  4. terpsmandan

    terpsmandan Member

    Joined:
    Sep 26, 2012
    143
    13
    0
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    I wouldn't mind to fix that as well.
     
    #4 terpsmandan, Oct 13, 2012
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