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Beeping with no indicator lights

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by siouxscout, Dec 15, 2014.

  1. siouxscout

    siouxscout New Member

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    I've been having an on going issue where my Pirus will start beeping but there is no indicator light I can see showing any kind of issue. It will start beeping during startup and after driving for a while, no exact time something like after 25~30 mins. It sounds like the seatbelt beep but louder and both will beep when my wife does not have hers on.

    I replaced the Aux battery(was old needed to anyway) with a yellowtop but that didn't fix it. And again there is no indicator on the dash or display showing issues no red or orange triangles. Checked the prius's diagnostics but no codes appear under the diagnosis check I or II, sycheck mode or LAN monitor.

    If you've managed to read through all this does anyone know what could be causing this? Might be nothing, but its on every startup. Not sure what else I could check really. I disabled the backup and seatbeat beeps thinking it might be related idk.
     
    #1 siouxscout, Dec 15, 2014
  2. bisco

    bisco cookie crumbler

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    just a wag, but how about your fob battery?
     
    #2 bisco, Dec 15, 2014
  3. siouxscout

    siouxscout New Member

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    Yea forgot to mention that. I replaced the fob battery and the Aux battery but no change.
     
    #3 siouxscout, Dec 15, 2014
    Last edited: Dec 16, 2014
  4. edthefox5

    edthefox5 Senior Member

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    #4 edthefox5, Dec 15, 2014
  5. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Check all engine compartment fluids, especially engine oil level.
     
    #5 Patrick Wong, Dec 16, 2014
  6. siouxscout

    siouxscout New Member

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    Checked the oil and brake fluid, they're fine. Haven't checked the transmission oil of course but might end up getting that changed here soon. Still no lights on the dash. Last night it actually didn't come on one of the starts while I was out(1 out of 5 it did beep), first time in a long time. But its back to beeping on every start.
     
    #6 siouxscout, Dec 18, 2014
  7. bisco

    bisco cookie crumbler

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    sounds like a call or trip to the dealer. do you have an aftermarket alarm or anything? how long have you owned the car?
     
    #7 bisco, Dec 18, 2014
  8. TampaPrius.com

    TampaPrius.com Active Member

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    Are you the original owner? Is it the same sound as the normal beeps?

    I had one that did that and it was a GPS tracking device that had been installed inside the dash. Sometimes buy here-pay here dealers do that to find cars when they are delinquent. The beeping is to alert the customer that the car could be shut down.
     
    #8 TampaPrius.com, Dec 18, 2014
  9. Jimmy219

    Jimmy219 New Member

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    This exact thing just happened to me. It took me a moment to realize that although nothing was blinking on the dashboard in front of me, the passenger seat belt light over on the right side was blinking. I had a heavy bag sitting in the passenger seat, and I had just taken a right turn rather hard. I reached over and buckled the passenger seat belt and the beeping stopped. The seatbelt beep is disabled, but it still beeps when the passenger weight sensor is tripped and the belt isn't buckled.
     
    #9 Jimmy219, Sep 21, 2016
    Last edited: Sep 21, 2016
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