EV-only operation question

[jazdean]

Suppose I were to continue to drive my 2018 clarity PHEV locally and just stopped putting gas in the tank. Eventually, I would burn all the gas and it would run only on the battery, albeit at reduced power. With the vehicle software allow me to run it like that indefinitely? Has anybody tried this?

 

[petteyg359]

Once the tank is actually empty, a "power system failure" warning will come up on the display, and it will beep at you constantly until you refill the tank. I know of no way to turn off that warning. But, if you just turn it off and back on again, and avoid hitting the accelerator hard enough that it tries to turn on the gas... Also, it'll probably complain about not being able to do its regular "maintenance" gas cycles.