Jezo

Battery is dying and I want to replace it. Went to store, had it tested, came back low as expected, went to buy new one and their system popped up a warning that if the old one is disconnected special equipment may be required to reprogram to onboard computers to have it started again and going to the deal is potentially required.

Is this an actual thing or just a warning they have in case it really doesn't start? Can I do this on my own or do I need to bite it and go to the dealer?

14ct200h

Is this the auxiliary battery your talking about? Its user-replaceable. I did it myself on my 3rd gen Prius. Upgraded to the Duracell brand battery after the original Panasonic died.

Jezo

Yeah the standard 12v in the trunk over on the right hand side. When you replaced it did you get an AGM vented battery or just something standard?

14ct200h

It was a battery to be replaced for the prius. Just not the standard 12v car battery.