Prius v Two will not start

Have any relevant inverter motor generator TSBs been accomplished?

 

What exactly does "seems OK" mean ?
Do you have a battery charger ??

 

fob battery should be 3.3 volts. do you have two fobs?

12v should be at least 12.4 at rest, and not go below 12 volts after the headlights have been on for 5 minutes.
test at the jump point under the hood. the age of batteries is mostly irrelevant

 

i don't see a relationship to the inverter if the car starts by holding the fob to the power button, someone please correct me

 

"in excess of 12 V" is not a good enough measurement.
At 12.0 volts, it is about half discharged.

The first thing you need to do is take the battery out and get it tested.....and check the main connections.
Or borrow a battery charger from someone.

Based on about a million stories similar to yours, the odds are great that your battery is weak and needs to be replaced.

 

I'd peg 12.0 as in bad shape. A volt meter gives some idea, but I would confirm with an electronic load tester*. They require input as to vehicle's battery type, and rated cold cranking amps. They do a test, report voltage AND as-tested CCA, then give a verdict, say "pass", "pass but recharge and test again", or "fail".

* Dealerships have these, but will likely charge, anywhere between $50~100. Automotive retailers, especially those selling batteries, have such testers as well, and will usual test for free. You can also purchase prosumer level tester of this ilk (Solar BA9 is one example).

 

If the IMG TSB has not been done, it is a ticking clock. The car is due for the IMG TSB at the dealer.

 

What’s that, inverter related?

 

Yes, Inverter Motor Generator IMG

 

Total BS.
Your ordeal might not be over yet.

 

Just like the 12v battery, the real test for any battery is under load. Obviously a coin battery is hard to measure in its working environment. To me the bottom line is their new coin battery works. I can't believe they would have done anything further and not charge you.

 

A couple of the parts in there are known as the IPM (intelligent power module) and the MG ECU (which sits right above it). "IMG" is probably what you get if you kind of run those two part names together, but it might tend to flummox people who try to look up the bulletin, as "IMG" isn't really what Toyota calls anything in there, as far as I know.

 

Right, it is incipient or actual failures to components on those two boards that control IMG function that are at issue, which require either hardware replacement, and if not yet failed the firmware update.

 

Again, IMG is kind of a non-Toyota term; people can find the relevant literature more easily if we stick to things like inverter, IPM, and MG ECU, which are the names that will show up in the bulletins and service campaigns.

 

Form over function, whatever.