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  1. #1
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    Jul 2005
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    Lake Lanier, GA
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    746

    Second Beep On '07 250 ProXS Start

    Don:

    I saw a few dated posts on this but no consistent resolution (that I could find). Engine will give the usual short beep when turning the key on, and will periodically give a short second beep when turning the engine over. Motor always starts right up, no SmartCraft warnings, and all seem fine. The cranking battery is on a trickle charger so it should be fully charged.

    Any new info on the periodic second beep for this motor?
    2020 Triton 216 Fishunter
    Mercury V8 300 Verado (2B646603)

  2. Member
    Join Date
    Jun 2007
    Location
    Brentwood, Ca
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    105
    #2

    Re: Second Beep On '07 250 ProXS Start (rpr)

    The only time that has happened to me I had to replace the cranking battery. Don't know for sure if it's a programmed warning for low CCA or what. I let it go for a few weeks and was left dead in the water. Check battery connections for cleanliness & tightness, if all ok I would replace it with the Biggest most Powerfull one you can fit. Minnimum of 1000 MCA for Merc.

  3. Member
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    Aug 2008
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    Fort Walton Beach, FL
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    538
    #3

    Re: Second Beep On '07 250 ProXS Start (rpr)

    If you've got smartcraft gauges...watch your volt reading when cranking. I think you'll get it if your cranking voltage drops below 11.5VDC or so.
    2013 Ranger Z520C
    Merc 250 ProXS

  4. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    Apr 2008
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    Greenville, SC (US)
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    98,150
    #4

    Re: Second Beep On '07 250 ProXS Start (rpr)

    There has not been (as of yet) any updated info from Merc on this topic. They are aware of the issue, and plan to address it (likely in a future calibration release).

    However.... the issue does commonly present when battery CAPACITY is below the minimum spec of 1000 MCA or 800 CCA. Keep in mind.... a battery with these ratings is ONLY going to be good to start the boat when FULLY charged- with no draw/drain whatsoever.

    I highly recommend a HIGHER CAPACITY battery for use on your engine. See this topic for a list of "well-suited" batteries:
    http://www.bbcboards.net...st-in




    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

  5. Member
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    Oct 2007
    Location
    Killeen
    Posts
    28
    #5

    Re: Second Beep On '07 250 ProXS Start (rpr)

    Same thing on my 09 225XS.....upgraded from 24 to 27 series cranking battery and the second beep went away.

  6. Member TigerDaddy's Avatar
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    Apr 2016
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    South Carolina
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    #6
    Mine doing the same now. It also shows on my 3 bank charger a red blinking light at 30 percent. Must be a battery problem. Mine is due to be replaced so must be it.

  7. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #7
    Quote Originally Posted by TigerDaddy View Post
    Mine doing the same now. It also shows on my 3 bank charger a red blinking light at 30 percent. Must be a battery problem. Mine is due to be replaced so must be it.
    Please see the Announcements, open a separate thread and provide the required info.

    Thanks!


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

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