Check Hybrid System after 12 volt battery replacement

Did you fully clip down your Orange safety plug? That's usually the problem... Check out a YouTube video on how it's done to be certain.

 

Did you fuss at all with the orange safety plug when replacing the 12 volt battery?

 

that message should have a related trouble code

 

Yea... I'm thinking this is a ghost post where they never reply again... But maybe I'm just having a bad day?

 

until they prove otherwise...

 

Appears to be another case of us carrying on the conversation while the OP sits in the moderation queue.

There's no particular reason to go check the orange interlock switch if you never fussed with it in the first place. Poster saying it's "usually the problem" may have read your post quickly and thought you replaced the other battery.

 

Did you fully charge the new 12 V battery before installing it ?
Many come half charged or less.

 

Don't wast your time with a Toyota Stealership... Find an honest mechanic or friend to help you... The dealership will give you an outrageous repair price and then try to sell you a new car with a "generous" trad-in offer, which isn't generous at all.

 

Good advice.......NOT.
While many dealership service departments seem pretty incompetent, independent shops and "friends" tend to know even less.

 

it is usually corrosion on the pins

 

Battery ECU from a Toyota Stealership is $800 and it takes an hour to put in but knowing those crooks they'll probably claim it's a 3 hour job at or above $100 an hour.

Meanwhile in the real world you can buy a used battery ECU for less than a hundred dollars online and an honest mechanic who doesn't have the costs related to running a huge shop will charge $40 to $80 for one hour of labor to do the job.

 

I would think it would have to be covered. It wouldn't have a battery ECU if it didn't have a battery.

 

What you or I or anybody else thinks doesn't matter.
You need to look at a copy of the warranty that covered your model when it was new.
The "warranty help line" at Toyota should be able to supply that to you.

 

The warranty and maintenance guide is free to download under the Manuals tab at techinfo.toyota.com.