Day 2.5 update: I pulled out my multimeter and checked all the fuses and fusible links in the fuse box - all good. I checked the voltage on the 12v and it was low (~5v). I've had it on a slow (2A) charge since about 11am this morning with the positive battery terminal off. My charger is pretty dumb so I think I will give it about 12hrs of charging before trying to crank it. If that works, I'll leave it disconnected until I get a chance to drive it over to the dealer to have the battery tested. Is the 100A fuse directly on the positive battery terminal or under the hood? Thanks for all the ideas.
suggestion: when your battery is fully charged tomorrow, put your ammeter on your multimeter between the positive lead and the battery to see how much amperage is running while car is off, it should be interesting to know this
did you ever figure out why it happened? The PIP simultaneously charges the 12V while charging the HV. The negative combination of events would have to be: 1. Not charging for awhile ie: a week 2. And, a serious drain. Because hatch left open, door, lights left on, etc. Did you fit into this description ? TY
First time it was parked in an outdoor lot for about a week, EV was all used on the ride there, so no EV charge at start of week. Second time in my garage. It was fully charged on Monday, wouldn't start about a week later. No obvious load was on the battery. No lights, Accessory mode, doors open, etc.
The 12v battery is toast, reading 5v. What ever way is faster, take it out of PIP, get it exchanged with new dealer 12v battery. Bad deal all around. I can only hope a well thought out plan comes out of this. Future PIP owner. Vern
One more critical point. To all new Prius owners, including PIPS. If, you lock your car, even in the garage then no drains on the 12V can occur. If the car will not permit you to lock it, check it out, you forgot something, your fob, your wife's fob, a door ajar, hatch etc. unfortunately, it looks like 12V problems are possible also on the PIPS.
I believe you, but, something drained it. You could also have a unknown, larger than normal parasitic drain, which you can check with your multimeter.
I thought I answered your question . The 100 A fuse is somehow built into the positive lead, but I understand it is removable. People have mentioned that dealers do not always have them. .????
here's an interesting thought: what happens to the 12 volt battery when the PIP was coming over the Pacific Ocean on it's way to the USA?
Probably no current drains occurring. I would guess that the shelf life, even on those flakey batteries is at least 3 to 6 months.
that is not to say that various situations cannot occur. Ie: sailors playing around with car, dealer not knowing what they are doing, and run bat down etc. I know for a fact that these things do occur, Sometimes.
i don't know what they are using in the pip or the 2012 hatchback, but i know from experience that the 04 lasted 8 years, the 08 is still going and the 2010's had a lot of problems. the 04 and 08 i used to leave unattended for 6 weeks in the middle of winter.
well, something or things are creating a drain on the battery which becomes evident after about a week or so of the PIP not being driven
maybe a test could be done on a "good" PIP, recreate the scenarios, ie. leaving the EVSE plugged in and monitoring the amperage of the 12 volt battery. after charging has completed