2007 intermittent red triangle

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Hanging on with 286k, Dec 15, 2022.

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  1. Hanging on with 286k

    Hanging on with 286k Junior Member

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    Location:
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    Vehicle:
    2007 Prius
    Model:
    II
    Hello. Original owner of 2007 with 299,750 miles.

    last night I filled the gas tank and topped off the oil before today’s road trip.

    red triangle flickered as I got on the highway going uphill and then went off

    multiple times and it sounded like a fan of a pump was turning on

    as soon as I would pull off, it would go out.

    move now driven an hour on the highway just fine.

    a red thermometer and the word Problem came on in the middle screen

    the only code I pull is the usual p0420 which has been ongoing for the past year

    any feedback appreciated
     
    #1 Hanging on with 286k, Dec 15, 2022
  2. bisco

    bisco cookie crumbler

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    sounds like it's overheating
     
    #2 bisco, Dec 15, 2022
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  3. JC91006

    JC91006 Senior Member

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    You should check for low coolant (check the radiator not the reservoir) and possibly a water pump issue (belt as well). It does sound like it could be an overheating problem.
     
    #3 JC91006, Dec 15, 2022
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  4. edthefox5

    edthefox5 Senior Member

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    You lost the water pump belt. Or the water pup has failed. be careful as the car has no temp gauge and an over heat is the quickest way to blow the motor. The little aluminum cylinder head will not tolerate an over heat. You may get way with it for a while if its very cold outside.

    You have to remove the black plastic cover over the radiator to check the engine coolant level its like 3 screws to remove the cover under the cover is the rad cap. If the coolant is low its because the engine water pump is blown and leaking.

    A G2 Prius with that much mileage needs top be hyper maintained and hyper monitored.
     
    #4 edthefox5, Dec 18, 2022
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  5. Hanging on with 286k

    Hanging on with 286k Junior Member

    Joined:
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    Location:
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    2007 Prius
    Model:
    II
    Thank you Ed
     
    #5 Hanging on with 286k, Dec 19, 2022
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  6. edthefox5

    edthefox5 Senior Member

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    I dont mean to harsh you my dear just trying to help. A car with that much mileage needs alot of checking its blood pressure if you know what I mean.
     
    #6 edthefox5, Dec 19, 2022
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  7. Hanging on with 286k

    Hanging on with 286k Junior Member

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    Model:
    II
    Point well taken
     
    #7 Hanging on with 286k, Dec 19, 2022
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