warning lights

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  • Dlazy
    Noobie
    • Jun 2026
    • 1

    #1

    warning lights

    Hello!

    What would be the cause of 3x warnings on start up? ABS/Brake fluid/battery

    Only on idle. If i rev it up once it goes away for the rest of the ride.



    Any ideas?
  • MrBurgundy
    R3V Degenerate
    • Mar 2012
    • 5531

    #2
    low voltage at idle

    probably a worn voltage regulator on the back of the alternator.

    if you haven't done it before, its simple.

    disconnect battery, remove air box and remove the two screws and flip it out. you don't have to take the whole alt out. (assuming its some m20)
    Current Collection: 1990 325is // 1987 325i Vert // 2003 525i 5spd // 1985 380SL // 1992 Ranger 5spd // 1973 Porsche 914 // 2005 Avalanche // 2024 Honda Grom SP // 2024 Yamaha XSR700 // 2025 Jeep Wrangler Rubicon X

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