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2010 SR5 TRD 5.7 Tow Package - not charging RV battery

Discussion in 'Towing & Hauling' started by marinakorp, Aug 28, 2019.

  1. Aug 28, 2019 at 8:15 AM
    #1
    marinakorp

    marinakorp [OP] New Member

    Joined:
    Dec 4, 2018
    Member:
    #22577
    Messages:
    136
    Gender:
    Male
    19406
    Vehicle:
    2010 DC 5.7 SR5 TRD Mica Green
    Tow Mirrors, Tekonsha p3, 12 v Solutions remote Start,Weather Tech Mats, Truxedo Roll up Tonneau
    Brand new to me last week....2010 5.7 SR5 TRD...tows my 7,000 (+-) camper trailer like a dream...couldnt be happier with the tow (well, more power maybe...but does well enough - lol)

    I have a suspicion that my Tundra is not charging my TT battery. My old Chevy would, as I could see the charge on the TT monitor...14.4...13.9...etc..remove from the Tow vehicle...and settle in around 12.7 (+-)

    On the Tundra...I am consistently not seeing this charge in the "charging" range...I see it when plugged in to shore power (on board converter), or when I attach my solar (small for off season charging)...but not when connected to the Tundra 7 pin...

    Everything else works on the 7 pin...lights, etc..

    NOT AT THE TRUCK NOW TO CHECK THIS NOW...

    What does the fuse # 14 - Towing Converter 30A do? would this be the power to the rear 7 pin?

    Going to check to see that this is not blown...or is at least there

    Any insight would be appreciated. I do need the batteries topped up for the trips, as I do pull over for the night between sites, and need it charged for my CPAP...and dont want to use the genny in a wallmart parking lot..
     

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