I was iced-in for two weeks. I tried to start my car this morning, and just different things were popping up on the front screen. My brake pedal won't push down. The car was plugged in the whole time.
If you've got a multimeter, check the voltage. Anything less than 12.0 volts, it's seriously depleted. 12.0 to 12.5 is so-so. 12.6 or higher you're in good shape. If you don't have a multimeter, a good-enough one is around $20~30, any hardware or automotive store will have them, or Amazon. For a better assessment, one of the new generation of electronic load-testers is your best bet. Barring DIY, try a jump-start. Be very careful with polarity, red to positive, black to ground. Beforehand, phone a few automotive places, verify they have compatible battery in stock, and can run a load test on your current battery. Or maybe someone like AAA can come to you.
Please read manual.... Toyota Manuals and Warranties | Toyota Owners 12V battery ONLY receives a small charge while it's actively charging the traction battery. Your traction battery was fully charged on day ONE; so the other 13 days was discharging your 12V battery - due to more readiness testing while plugged-in. That's why the manual states to unplug the car when the traction battery is fully charged. Fully charging the traction pack and not using it for two or more weeks is another discussion - again read the related sections of the OM, because your degrading your traction battery pack faster than engineering projections. You've probably killed that 6 year old battery 12V battery. Try recharging it and get it tested at any auto parts store for free. Since the battery was drained, you may get some phantom error codes (CEL), just erase them and see if they come back. AFTER you take care of the 12V battery issue. Good Luck...... Sorry; that's a 2026??? It similar to a gen4; just a larger traction pack. Call the nearest dealership's roadside assistance number. They will fix it for free and replace the battery, if needed. I wouldn't mention leaving it plugged-in for 2 weeks solid; since that puts the system fault at your feet.... Toyota Manuals and Warranties | Toyota Owners
This is to be expected with my car. Leaving it parked for more than 4 days usually results in a dead battery, or rather a battery at too low a charge to start the car. When the battery voltage falls below about 11.5, the car enters an error state, and will not start up. The only solution I found is to use a booster pack. The rest of the time, I use a battery maintainer if power is available. This seems to me like a serious design flaw; it seems absurd that you need to get a boost or make a dealer service call every time the battery goes flat, which is quite often, especially considering that there are kilowatts of available power in the hybrid battery. It seems simple enough to me that it could be designed to transfer some power to the DC-DC converter, when needed (as long as there is sufficient charge in the hybrid battery). But Toyota has been no help at all with this problem, so I get by with my workarounds. Post edit: Plugging in the charge cable will maintain the 12V battery in a limited fashion, but I found it to be unreliable over longer periods.
Paul, if you highlight some text, then embed the link in it, using this function: It works better. Right now I'm just seeing blank space.
