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WS FA 4900

Discussion in 'Western Star Forum' started by Stef6421, Jan 11, 2026.

  1. Jan 11, 2026 #1
    Stef6421

    Stef6421 Bobtail Member

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    Jan 10, 2026
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    Hi everyone! I don't know if anyone can help me.

    I bought a 2019 WS FA 4900. I've had it for three months now, and I had the tires changed a month after buying it. Since then, I've had a problem!



    When I go over a bump, the ABS light comes on, my gauges shut down, and my engine light comes on. It's intermittent! Has anyone else experienced this problem?
     
    Stef6421, Jan 11, 2026
    Stef6421, Jan 11, 2026
    #1
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  3. Jan 11, 2026 #2
    mitrucker

    mitrucker Road Train Member

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    My thought is that it has nothing to do with tires. The problem is electrical, probably something in the dash.
     
    mitrucker, Jan 11, 2026
    mitrucker, Jan 11, 2026
    #2
  4. Jan 11, 2026 #3
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    Sounds like you're losing ignition power for a second. I'm not sure how WS powers the dash, I'm sure some ECU.

    I'd check all cab grounds and batterv cables first, then any ignition relays.
     
    Big Road Skateboard, Jan 11, 2026
    Big Road Skateboard, Jan 11, 2026
    #3
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