Volvo VNL 780 Displays: HSA, ABS, TCS

Discussion in 'Volvo Forum' started by MichaelK1, Feb 26, 2021.

  1. MichaelK1

    MichaelK1 Bobtail Member

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    Feb 26, 2021
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    Hi, everyone! Volvo VNL 780. Display show me three sign together: HSA, ABS, TCS. Nobody can fix it!
     
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  3. Brandt

    Brandt Road Train Member

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    A Volvo dealer can't fix it ? It's probably needs volvo software to read the codes and give them some idea of were to start. Hill Start Assistant and Antilock Brakes and probably Traction Control System.
     
  4. black_dog106

    black_dog106 Road Train Member

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    Not questioning or critiquing you Brandt, only thinking about your reply...
    Remember when it was the drivers job to start on a hill, control the wheel lock up and the driver was the traction control?
    If these safety systems can make trucks almost idiot proof, these same systems are important steps to achieving autonomous?
     
    Last edited: Feb 26, 2021
  5. Brandt

    Brandt Road Train Member

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    It sounds like the truck has ishift the volvo automatic transmission. That's what I was thinking because of HSA. We had to do that ourselves with manual transmission. I can see if driver has only 2 pedals they don't teach that anymore. I don't understand how nobody can fix the truck unless the person doesn't understand it's a Volvo truck and only Volvo can fix it.
     
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  6. QUALITYTRUCK

    QUALITYTRUCK Road Train Member

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    Hey Nas. The gentleman stated that "nobody" can fix this issue. I think between both of us we are fixing 5-6 a month.
     
  7. Inderjit

    Inderjit Light Load Member

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    MichaelK1 Where are you located? Bring it to the shop where I work and I will fix it.
    I'm in Northwest Canada.
     
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  8. uncleal13

    uncleal13 Road Train Member

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    Most likely an ABS problem. Both Traction Control and Hill Start Assist requires ABS to work.
     
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  9. Inderjit

    Inderjit Light Load Member

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    Definitely an ABS related problem could be a failed TC solenoid or wiring too.
     
  10. Socal Xpress

    Socal Xpress Road Train Member

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    Need more information. Year of the truck and need the codes in order to help you get the truck fixed.
     
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