2026 Prius Plug in won't start

Discussion in 'Gen 5 Prius Main Forum' started by sistersinhim, Feb 11, 2026 at 11:43 AM.

Page 3 of 3

Gokhan Senior Member

Joined:

Oct 5, 2008

6,459

2,580

0

Location:

Paramount CA

Vehicle:

2021 Prius Prime

Model:

Limited

BiomedO1 said: ↑

1% SOC every 5 minutes seems to be a steep discharge curve for a 40 mile capable PHEV; though I've never tried that. Maybe if the heat pump is active, it may draw down that quickly. If that math works; you would go to 10% SOC in 450 minutes, 7.5 hours - the engine would kick ON somewhere down there, so you'd have to plug-in again to recharge your traction pack
Again, I've never tried that - because I have an outlet, two battery chargers and a half-dozen maintenance chargers. Mixture of smart and dumb ones. The dumb ones are an amp or slightly less. I cobbled those together, when work was tossing them out.
Click to expand...

The idle power draw is around 500 W. This is without the A/C/heat pump running, but with the lights on. I certainly see my SOC drop by 1% at idle for my Gen 4 Prius Prime PHEV every five to ten minutes when the A/C/heat pump isn’t running. It is very wasteful to the environment to leave the car in the READY mode. It is dangerous, too, if the gas engine kicks in and fills the house with carbon monoxide. Just get a Noco Genius.

#41 Gokhan, Feb 16, 2026 at 3:47 PM
Last edited: Feb 16, 2026 at 4:54 PM

(You must log in or sign up to post here.)

Page 3 of 3