smart key battery change?

YouTube video on changing Prius smart key:

 

Shaka808, that video is for the 2nd Gen Prius key FOB.

furtceli, here is the video for the 3rd Gen Prius key FOB.

 

Thanks NutzAboutBolts for the correction, I actually subscribe to your channel on YouTube and watched all of your Prius service videos, quality stuff and very helpful, thanks for taking the time to post it.

 

Not a problem thanks for subscribing! more will come when the time is needed for sure.

 

Its in the owners manual too.

 

My curiosity question is:
With a brand new car (2014), not more than 6 months old....right?....
why would you NEED to change the battery already ??

 

was wondering the same thing. be prepared?

 

How long do you think the batteries have sat in the new fob? And they won't be as charged up to begin with as say a brand new quality cell.

 

While that sounds like a logical assumption, you don't know how OLD those fresh quality cells are either.

The system will warn you when the battery is getting low.
The book says they should last at least one year, maybe two.

 

In my opinion, you are worrying about this MUCH too much.

The batteries are cheap. Every time you pry open the case there is potential for damage.

I think I read that an unused FOB "goes to sleep" if kept away from the car so just leaving it in the house should
extend it's battery life a LOT ; there is a procedure for "waking it up" after extended periods of non-use.

There also is a "manual" procedure for starting the car when the FOB battery is dead.

Don't let OCD ruin your life.

If you haven't already, you should read your owners manual.
It has a LOT of good stuff in there.

 

Try taking the battery in and out a few times.

 

Do you have to re-learn or re-program anything after changing the battery?

 

Nope. No programing.

But its best to keep the fob a distance away from the car as it will communicate with the fob within distance for quite a while then time out. If you can actuate the fob its within communicating distance. Remember there's multiple antenna's in the car and the system will do all it can do to initiate com and keep com to the fob.

 

Thanks. Yeah, I've learned not to store the extra key by the car.