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I suspect one of two things. Either the battery disconnect solenoid switch got hit and the batteries are "out of the loop" and not providing power OR they are failing and need replacing, especially if they are over 3 years old. It might be just a case of dirt and corrosion on the cables as well. Start there and then we can move into some testing if that all checks out. I think you might want to check with one of the local parks and see who they recommend for mobile tech work. A good one would be able to come and load test the batteries and check the cables for you. Taking them out and into town to be tested may not be practical where you are. This shouldn't take long and if you do need new batteries, I would go with Interstate HD batteries. I have been selling them in my shop for over 3 years now and have not had to warranty a single unit thus far! The two places you don't want to scrimp are on batteries and tires. Hope this proves to be helpful and please get back to me if we need to dig deeper into this issue as all follow up exchanges are included and expected.
IF you still have some 12 VDC power inside the coach.......like for operating the fridge, then the battery disconnect switch is probably in the correct position. IF you have a small digital multimeter or can borrow one you can check at least the surface voltage on the batteries. You can do a visual inspection of the battery cables and see if they look clean or if a lot of corrosion is present. Attach a photo of them to your post if you want using the paperclip icon. If they are over 3 years old, there is a good chance they are failing. Most RV batteries will only last about 3 years. Let me know what you find.
This sort of thing is usually quicker and easier to do in a phone chat, but there is a small upcharge for that service. You still might want to check the local area for a good mobile tech for some help here. This won't take long to sort out with one who knows what to look for. I suppose it depends somewhat on how fast you need to get moved. This is a problem on the house battery side.
Those need a lot more power as they all have motors and batteries and cables are highly suspect.
You may have tripped a shortstop breaker or high amperage breaker to the motor that works this system.......especially, if this has an HWH system where the room slides and jacks work on the same pump and motor. It might be a bad relay in that area and if you have a meter this can be tested.
Low voltage results in high amperage and that blows fuses. Whose system do yo have on the slides and jacks? Many of those were HWH systems and the name and version is on the touchpad most of the time. Get back to me with that information and I should be able to grab a manual for you and direct you further.
O.K......if that doesn't work right away, let me know whose system you have and I can get a manual and direct you futher. I don't think this is fuse, but more a high amp breaker or shortstop breaker issue.
Most of those are in a roadside bay where the other electronics are OR under the hood. Some are next to the batteries. Not that I know of with that description UNLESS it is in the compartment with the other electronics. Your manual should show this and the related breakers and fuses for this.
Just wondering if you were able to resolve this issue since I didn't hear back from you? Thanks for bringing your question to Just Answer!