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ericsmith32's avatar
ericsmith32
Explorer
Sep 08, 2013

Electric steps and battery draw

Anyone else have this issue? It's been over a month since our last trip in our Class C. We have to close the step due to how much space it takes up on our driveway. I'd say on average it's used twice a week. Went to open it today and nothing. Checked the battery and it was only putting out 4.5 volts. Got it recharged and tested and it's ok.. it was new this year. Checked for parasitic draw and nothing.. maybe .06 amps on occasion. The steps took 5-7 amps whenever it was used. Of course the start from the rear battery didn't work.. doesn't surprise me with how screwed up everything else has been.

Has anyone rewired electric steps to the rear battery? Doesn't seem like a hard task... I'll probably put it out a switch so I could run it from either. It's seem like it is getting some power from the rear battery because it won't work when that battery is removed also. Anything I'm not thinking of?
  • This is from the kwikee manual and explains why some think the step could cause a draw. It cannot if functioning to specs. Doug

    If the power wire to the step is disconnected
    from its source and reconnected,
    a spark is common. This is caused by the
    momentary charging of the control unit
    and does not necessarily indicate the
    system is staying on, which would cause
    a drain on the battery. If battery drain is
    suspected, observe the understep light (if
    so equipped) while the step is extending.
    The power switch must be on for the
    understep light to operate.
  • j-d's avatar
    j-d
    Explorer II
    Your step motor's a Ford power window motor. You should be able to run it many many times before it drew the battery down. The step controller shuts the motor down based on current draw. In other words, the motor should stop when the step can't move farther, up or down. But I'd still be sure the steps are lubed so they fully retract with ease.

    Our Escapade has a house battery switch right by the door. Are you turning the house battery OFF while parked? If you aren't, your battery's being drawn down "parasitically" by the LPG Detector and other stuff that's powered unless you turn the battery off.

    EDIT: Oh, Wait! Your steps are wired to the Chassis Battery? Odd that Jayco would wire one Escapade one way and the other another way. I can see their logic in Chassis Battery. However you manage to get the engine running, alternator power would close the steps. If I started the engine and had a dead house battery, I guess they wouldn't close...
  • A correctly functioning Electric step will NOT draw any current when retracted or extended. Doug
  • Excellent suggestion! Not sure why I didn't think of that. I'm going to try getting something similiar to this:

    http://www.amazon.com/Black-Decker-BM3B-Battery-Maintainer/dp/B0051D3MP6

    Won't have to put it under the hood and there's 2 12v outlets in the dash. Looks like the cords are long enough I can put it close to a outlet.
  • A simpler solution would be to add a trik-l-start or similar battery maintainer on the chassis battery. That would compensate for the the occasional use of the step and the usual draw (radio memory etc) on the chassis battery. Ours is permanently wired in and plugged in to a MH 120v circuit, keeping the battery charged when camping as well.

    This cured our problem of a dead chassis battery after two weeks similar parked/stored usage like yours. Our c-class is plugged in 24/7 when it stored a home.

    Beverley and Ken

    edit to correct grammer/spelling

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