Chassis battery / Freightliner lightbar
I seem to be caught between two alternatives, neither of which I like very well. My coach is a 2011 Newmar Ventana on a Freightliner chassis.
When I have my coach in storage, with the chassis battery switch left on, there are enough parasitic draws to fully drain the battery in about 3 weeks. If I switch the battery off, it doesnít discharge, but then, the next time I use the coach, I find that the Freightliner lightbar shows the date and time that I turned the switch off, rather than the current date and time. Thus I have to go through the process of resetting it every time I use the coach.
I donít seem to remember that the Freightliner lightbar stopped counting with the battery off before I had it replaced (because of a compass problem), but then there a lot of things I donít remember. The service facility that did the replacement says this failure to count is normal when the switch is turned off. I donít understand why the lightbar is not able to count up the elapsing time if it has enough of a power source to retain the rest of its memory. A friend claims that this doesnít happen on his Phaeton. Do others have this same problem?
Does anyone have a suggestion of how to avoid having to pick the lesser of these two evils? My storage facility does not offer the option of plugging in any auxiliary electrical component.