Forum Discussion

1L243's avatar
1L243
Explorer II
Mar 27, 2019

Slide Out!

I have a friend who just bout a new Winnebago Class C. He said in order to put the slide out the ignition has to be on or the engine has to be running? I did not question it because I have never had a Class C motorhome but WHY?
  • 1L243 wrote:
    MDKMDK wrote:
    Provides alternator charging for the 12V system which is where the slide motors get their power. Usually.
    Parking brake usually has to be set, as well.
    Better results if you're level. Also.


    I know he has two batteries for just the coach the truck has it's own battery. So, wouldn't the slide work on just the coach batteries?

    Yes, it might. But the draw down on them will be significant, particularly if they're already depleted after camping for a while. The idea of running the engine is to "help" the coach batteries handle the electrical load which is translated to mechanical power (torque?) from the slide motors, when he hits the "extend/retract" button. Nothing complex, just that the engine alternator is a better/best source of electricity to recharge/replenish the coach batteries while the slide is operating.
  • kjburns wrote:
    The slide out motor(s) pull more power than the coach batteries are designed to handle. They're more for handling the house power needs. Running the slide out on batteries only may trigger a fault and require a reset. Run the generator or plug in and there won't be any problem.


    I am surprised that the Class C slide system is so different than that of a travel trailer. Although I have upgraded my Toy hauler to four deep cycle batteries it only came with one battery to run everything including the slide.
  • The slide out motor(s) pull more power than the coach batteries are designed to handle. They're more for handling the house power needs. Running the slide out on batteries only may trigger a fault and require a reset. Run the generator or plug in and there won't be any problem.
  • Beverley&Ken wrote:
    On our 06, the slides operate off the single chassis battery, not the 2 coach batteries. My guess is that it is easier to do the safety interlocks of the one 12v electrical system. I think they recommend having the engine running just to prevent running the chassis battery down and to make sure the slideout motors get adequate voltage power.
    On ours, the slides work without the engine running, but a bit faster with the engine running. They will not work, if the parking brake is not set.
    Ken



    ^^^^^^^^^^^ X2 ^^^^^^^^^^^

    My Outlook Manual says (in all caps) that they recommend that you keep the engine running so as to provide maximum power. The slide will go in or out just fine on the coach/house batteries but you can actually hear the motors run faster with the Ford engine idling.

    Safe travels............
  • On our 06, the slides operate off the single chassis battery, not the 2 coach batteries. My guess is that it is easier to do the safety interlocks of the one 12v electrical system. I think they recommend having the engine running just to prevent running the chassis battery down and to make sure the slideout motors get adequate voltage power.
    On ours, the slides work without the engine running, but a bit faster with the engine running. They will not work, if the parking brake is not set.
    Ken
  • My slides work with the ignition off, but the parking brake must be set.
  • MDKMDK wrote:
    Provides alternator charging for the 12V system which is where the slide motors get their power. Usually.
    Parking brake usually has to be set, as well.
    Better results if you're level. Also.


    I know he has two batteries for just the coach the truck has it's own battery. So, wouldn't the slide work on just the coach batteries?
  • Provides alternator charging for the 12V system which is where the slide motors get their power. Usually.
    Parking brake usually has to be set, as well.
    Better results if you're level. Also.