Installed a dual battery system in my '99 LX470 about a year ago and it's been working fine. Lately I haven't been driving the rig regularly. As such when I get in the batteries are usually unlinked and I've had to link the batteries in order to start. Recently the link has no longer worked. Fully dead. No click, no nothing. The meter shows the aux battery is holding a charge but it won't link. When I connect a jump pack to the primary battery the alarm immediately starts blaring and the key fob works. I turn off the alarm and start the truck like normal w/o the jump pack.
My guess is that the primary battery is so drained from sitting (some parasitic draw) that the system doesn't recognize that it's present at all... until I connect the jump pack at which point the aux battery links. Does this make sense? Anyone have a similar experience? Solution? Thinking I should just disconnect the primary when the truck isn't in use.
My guess is that the primary battery is so drained from sitting (some parasitic draw) that the system doesn't recognize that it's present at all... until I connect the jump pack at which point the aux battery links. Does this make sense? Anyone have a similar experience? Solution? Thinking I should just disconnect the primary when the truck isn't in use.
