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GGoodsell's avatar
GGoodsell
Explorer
Apr 20, 2019

Intermittent failure to start.

I'm looking for ideas - I have a 2018 Thor Chateau C class 28E motorhome. On three occasions the engine has failed to start due to what appears to be a dead battery. This happens after the rig is in use, plugged in to shore power, after 3-5 days. The rig has been checked and I'm told no problems were found. The last time I was able to use emergency start to get it going, but I'm frustrated when I can't be sure if the unit will start. Other than this, all systems operate properly. Any ideas?
  • By the way.... I try to drive my C once a months during the winter just to keep things working. Well, I got busy with work and accidentally let it sit for 3 months. When I finally turned the key, it started right up.

    There is NO WAY you should go flat is just a few days.
  • Test the 'truck (chassis) battery' using an amp meter to see how much is drawing when its parked . Do not plug the camper into shore power while testing.
  • Is the battery down? If not it could be the brake light switch on the pedal. There is a switch on the brake pedal that needs to be made by depressing the brake to complete the start circuit.
  • Mine started doing that. I cleaned the battery terminals and connectors and it solved the problem..