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

Missing HV Vent Tube??

Discussion in 'Gen 3 Prius Technical Discussion' started by Noahdoge, Jan 26, 2022.

Tags:
  1. Noahdoge

    Noahdoge Active Member

    Joined:
    Jul 13, 2021
    165
    119
    0
    Location:
    Mississippi
    Vehicle:
    2012 Prius
    Model:
    Two
    3B9BF6A0-B44A-4F94-A658-9EBA830CE2F7.jpeg I was replacing the bus bars on my 2012 Prius and I noticed something. There’s no vent tubes?? I’ve never messed with the HV battery and I’ve never had it serviced. I’m guessing it came like that from factory. How bad is this, I’ve owned the car since 2015 and put on 120k miles
     
    #1 Noahdoge, Jan 26, 2022
  2. PriusCamper

    PriusCamper Senior Member

    Joined:
    Mar 3, 2012
    10,927
    4,430
    0
    Location:
    Pacific Northwest, USA
    Vehicle:
    2007 Prius
    Model:
    Two
    Yea... They phased out the vent tubes around about 2012 because the hybrid cooling fan does a good enough job at sucking fumes out of car in a battery failure when pack heats up. I suspect main reason for this is the known problem of NiMH fumes coming out of the vents reacting to rubber in the vent tubes and creating a yucky electrical smell inside the car and people complain about it.
     
    #2 PriusCamper, Jan 26, 2022
    Noahdoge likes this.
  3. Noahdoge

    Noahdoge Active Member

    Joined:
    Jul 13, 2021
    165
    119
    0
    Location:
    Mississippi
    Vehicle:
    2012 Prius
    Model:
    Two
    Thanks I appreciate that! Makes perfect sense now.
     
    #3 Noahdoge, Jan 26, 2022
  4. fuzzy1

    fuzzy1 Senior Member

    Joined:
    Feb 26, 2009
    17,123
    10,049
    90
    Location:
    Western Washington
    Vehicle:
    Other Hybrid
    Model:
    N/A
    The only vent tube on my 2012 is on the 12V battery. I'm not seeing any indications that NiMH battery venting has anywhere near the potential toxicity of lead-acid venting.
     
    #4 fuzzy1, Jan 26, 2022
  5. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
    8,141
    1,411
    0
    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    After 10 I think the vent tubes are gone. Good riddance not needed nimh fumes are nothing to worry with You have a fan back there running anytime the battery's doing anything worthwhile and that fan is sucking anything back in that area of the car and putting it straight out the back vent cigarette smoke battery fumes dog breath doesn't matter that fan is whipping that stuff right out of there pretty quick
     
    #5 Tombukt2, Jan 27, 2022
  6. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,799
    48,996
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    too bad all the people who gad to replace their smelly vent tubes didn't know this
     
    #6 bisco, Jan 27, 2022
(You must log in or sign up to post here.)