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

Red triangle light

Discussion in 'Gen 2 Prius Main Forum' started by wangjunggo, Sep 18, 2017.

  1. wangjunggo

    wangjunggo New Member

    Joined:
    Sep 18, 2017
    1
    0
    0
    Location:
    Los Angeles
    Vehicle:
    2005 Prius
    Model:
    Two
    I have a 2005 Prius with over 232k miles. The red triangle, check engine, and VSC lights went on last Friday, was going to the dealer this morning but the car stalled at the intersection. Engine seems fine but when I step on the gas pedal, the car would not move. Please help. Thx.
     
  2. jadziasman

    jadziasman Prius owner emeritus

    Joined:
    Jan 17, 2011
    1,355
    487
    0
    Location:
    District 6
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Another pack bites the dust
    Another pack bites the dust
    And another one gone, and another one gone
    Another pack bites the dust
    Hey, It's gonna get you, too
    Another pack bites the dust
     
    strawbrad likes this.
  3. Ron Tufo

    Ron Tufo New Member

    Joined:
    Jul 22, 2020
    2
    0
    0
    Location:
    Stockton Springs Maine 04981
    Vehicle:
    2005 Prius
    Model:
    Two
    Hi New to the chat. Help: Have the triangle of death/ VSC light. Have taken out the hybrid batt and checked all cell (All are between 7.3 and 7.7 volts). Have removed all the buss bars and cleaned them and the connectors that are on one side of the buss bars. All posts and terminals are connected and the hybrid batt is showing a full charge. I can clear the error codes with a cheap OBD and the car will start up nicely and then the VSC light comes back on after less than a minute of the car running. Starter batt is putting out 12 volts!! Help!
     
  4. dolj

    dolj Senior Member

    Joined:
    May 14, 2012
    7,487
    3,763
    0
    Location:
    Wellington, New Zealand
    Vehicle:
    2007 Prius
    Model:
    N/A
    What might be useful, is to get the code that has been stored in all of the ECUs, one of which might be either the HV ECU or the battery ECU.

    Possibly you have a P0AA6, which if you have the sub-codes 526 and 612 points to the HV (hybrid vehicle) battery. Have a look at all the modules and see if you can see any electrolyte leaking anywhere. Sometimes the leak is around where the module is attached to the case. If you can't see any obvious leaks, use an ohmmeter to see if you get continuity from any of the module terminals to the case. Another way is to use a voltmeter to see if you can detect any voltage between any one of the terminals to the battery case. If any leaking modules are found they will need to be replaced and area of the case where they were will need to be thoroughly cleaned and dried before reinstalling the replacement modules.

    But, if you can get the actual codes, the area where you should focus will become more clear.