2010 Prius won’t unlock with the 12v battery dead? And key fob metal key doesn’t open driver side.

You’ll need to find a “home” for your car, for at least a day; maybe local garage, obviously with AC power. Maybe a PepBoys or similar, preferably one with compatible replacement batteries for sale and electronic load tester.

Try charging first (could take 12 hours), and (presuming the charger can successfully run through a charging cycle).

Then get the electronic load test done, verify it’s still got “life”.

If not, replace.

All of that might be too cumbersome in your scenario: go straight to replacement?

 

Your best purchase right now might be a set of jumper cables. With a Good Samaritan or two you’ll be able to get it started, get to a retailer that has the battery you need. Phone ahead.

 

the op’ster has another thread saying he got the cel code to replace hybrid battery so your great tip alone may not resolve his issue, I mean issues. He’s got other threads with different issues. Wish I can get attention like that

 

Info we didn't have before. The hybrid battery starts the engine, and runs all the 12v item and charges
the 12V.
Seems like you have have more serious issues then the 12v battery.
Maybe the inverter has failed??? I believe you'll need someone weith hybrid experience to look at it.
I know you probably don't have the money, and I don't know how to help you, sorry.

 

Dogs, cats, rabbits, or goldfish?

 

ah, another thread, no wonder i'm lost

 

Sounds like a plan.

 

No way! I actually like this, it’s like watching the tv show “Lost” which we re taken from one story line to another. There’s 13 different story lines going on at the same time, and then it commercials.

 

that's a good friend

 

I just found this thread two years on. Correlation is not causation: the fact that the 12v battery is dead has nothing to do with the fact that the metal key doesn't open the driver door. The only reason they even appear to be correlated is that people try to open the drivers door with the key when the battery has died. AAA pried open my door, I charged the battery, and yet the key still doesn't work. I suspect ASRDogman has the answer.

 

I have same problem but my key worked before. I am calling unlock people They are charging 150 to open the door.
I am mad. I was always thinking physical key will open. It seems it needs some battery

 

??? The correc physical key will work.
You don't give much insite to what happened....

 

My physical key do not work now. I put allen key in middle hole and bend clockwise. Car cant open

 

So it is not turning? Are you sure it is the correct key? Have you ever used it
to make sure it worked?
Try spraying some wd-40 or other lube in it to hopefully free it up...

 

I used the plier like the guy said i broke that small platic on the key. Still cant open.
Damn.

 

Its turning clockwise and anticlockwise. It seems like you still need battery for it to work. fob may not work with low battery but for key to work it seems it need battery. You still some voltage on battery for it to work it seems.

Because a month ago i opened with same key without any effort.

At first i was able to open half way and get stuck. Should have used metal hanger i pushed it back thought that will help. Now i cant even get that half and probably used last ounce of battery

 

you don't need the battery when using the key. It's for when the battery dies.
Something has come loose in the door that is not allowing it to unlock the door.