Toyota camry hybrid aux battery problems

[Caddyman]

Any decent auto-electrical shop should be able to do a parasitic load test on the aux battery and isolate the problem…The circuits connected to that battery will be fused just like any other car…At least measure the drain (load) on the battery so you know what you are dealing with…If it’s a standard automotive 12 volt battery, you can only “deep cycle” those so many times before they lose much of their capacity…