The 12 V battery was disconnected at the ground for a few weeks and it was left on a maintainer during that time. When the battery was reconnected and the vehicle started, the hybrid display remained blank for several minutes. Then the battery was disconnected and then reconnected, and when the vehicle was started fornthe second time the display was fine. Was this a glitch or should I expect problems with that display?
Probably a glitch. Modern ECU's don't like voltage spikes. If you were hesitanted hooking up the battery and jumped a couple of times when the battery sparked - your throwing spikes at the ECU's in the car. If you got the battery on a maintainer, why did you disconnect the battery?
I agree. You do not need to disconnect any cables from the 12v battery. Just connect the battery maintainer to the 12v battery.
The Gen 3 displays are an issue quite a bit .see how many folks looking for them online . I get 3 calls a week about the 10 and the 13 radio and eyebrow display. Gen 3 owners want them for free . They're owed something by the Toyoda community apparently.
The owners manual cautions to disconnect the battery before charging IIRC. That said, ours is on a charger almost all the time, fully connected. there “might” be reasons, reversed connection, defective charger, power spike, some thoughts here: https://bobistheoilguy.com/forums/threads/always-disconnect-battery-when-using-charger.200445/
Yes; but that's mostly lawyer's speak. If you know what your doing and know your equipment, you can pretty much avoid the issues caused by clamping directly onto a connected battery. Most battery tenders come with battery connection pigtails to plug-in directly. This reminds me of the stupid law suit, where some idiot used their lawn mower as a hedge trimmer. He lifted his lawn mower to trim the hedges and of course got hurt. That's why all your newer gardening equipment has handle kill switches. You release the handle, the power equipment doesn't operate. New hedge trimmers forces you to have both hands on the handle, for it to activate. Now, if I can only avoid cutting the power cord.
The car has been stored for long periods of time in Florida and over the years I've had several failures of the battery even though it was on a maintainer. So to eliminate draw from the battery I disconnected the negative terminal. Storing a vehicle in the heat of Florida is not good for the life of the battery.
Yep, Florida heat destroys a lot of things, along with the humidity. Do you have anyone to leave it with that will drive it once a week a so to keep both batteries charged up? That would be ideal, if possible.
I have a friend who lives across the street and he takes it out occasionally, but not once a week. I haven't had any problems with the drive battery. I recently sold a car, so all I have left is the to the 2010 in Kentucky where storing it long term has never been a problem.
