Technical question

daniel · 07-17-2004, 07:38 AM

I know that in normal operation, the Prius is not in full hybrid operation until certain requirements have been met:

The engine is fully warmed up;

AND

The car has come to a stop for 10 seconds OR it has exceeded a certain speed (somewhere around 40 mph???)

With these conditions met, the computer is in Phase III (or IV) operation.

My question is, with the EV switch installed, must the computer be in this Phase III (IV) condition for EV mode to be engaged with the switch? Or is it sufficient that the engine be fully warmed up?

To put it another way, can pressing the button be a substitute for the second criterium? That is:

The car has come to a stop for 10 seconds OR it has exceeded a certain speed OR you engage the switch?

**efusco** · 07-17-2004, 08:34 AM

The criteria for stage III must be met before the EV mode will engage. You cannot engage EV via the button in stage II.

07-17-2004, 07:38 AM	#1
daniel Cat Lovers Against the Bomb Join Date: Feb 2004 Location: Spokane, WA Posts: 9,151 My Car: 2004 Prius Package: #6 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Technical question I know that in normal operation, the Prius is not in full hybrid operation until certain requirements have been met: The engine is fully warmed up; AND The car has come to a stop for 10 seconds OR it has exceeded a certain speed (somewhere around 40 mph???) With these conditions met, the computer is in Phase III (or IV) operation. My question is, with the EV switch installed, must the computer be in this Phase III (IV) condition for EV mode to be engaged with the switch? Or is it sufficient that the engine be fully warmed up? To put it another way, can pressing the button be a substitute for the second criterium? That is: The car has come to a stop for 10 seconds OR it has exceeded a certain speed OR you engage the switch? __________________ Daniel ---------------------- Primary car: Zap Xebra SD: 100% electric car. 1.9 cents per mile, using electrons generated from water power. (The Prius is my gas guzzler, used when I have to travel farther than 35 miles in a day.) "If voting changed anything, they'd make it illegal." -- Emma Goldman "Anyone who has ever looked into the glazed eyes of a soldier dying on the battlefield will think long and hard before starting a war." -- Otto von Bismarck

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07-17-2004, 08:34 AM	#2
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 14,253 My Car: 2004 Prius Package: #9 Nominated 1 Time in 1 Post TOTM Awards: 0 Friends: 24	The criteria for stage III must be met before the EV mode will engage. You cannot engage EV via the button in stage II.