can not change to EV mode right now

MariaEvri · 05-04-2009, 12:35 PM

Uusally I get this mesage when the battery is too low, or when the engine is on (warming up I guess??)
But today (and yesterday once) I kept giving me this message, even though the battery was almost full, the engine was off and I was moving at extreme low speed. I also tried when the car was still but it still gave me this answer. It did let me use the EVV mode once but most of the time it gave me that message. Enyone knows whats up?

**efusco** · 05-04-2009, 12:42 PM

EV will be denied if the battery is too full, just as it will if it's too low.
EV will be denied if the battery temp is too high or too low (not sure the exact temps).
EV will be denied at a few other, as yet undefined, times. This happens to me as well and sometimes I'm at a complete loss as to why, but I just satisfy myself that some smart engineer decided that EV would be a bad idea for some reason and programmed it to prevent me from damaging the car.

MariaEvri · 05-04-2009, 12:45 PM

Quote:

Originally Posted by efusco

EV will be denied if the battery is too full, just as it will if it's too low.
EV will be denied if the battery temp is too high or too low (not sure the exact temps).
EV will be denied at a few other, as yet undefined, times. This happens to me as well and sometimes I'm at a complete loss as to why, but I just satisfy myself that some smart engineer decided that EV would be a bad idea for some reason and programmed it to prevent me from damaging the car.

Thank you for the asnwer. I dont think it is because of reason one, since I tried to use the EV mode when the battery was two lines to full, and then when it was half full/
I'm thinking maybe it was reason two.. can the battery be affected by environment temperature? It was very hot today

**efusco** · 05-04-2009, 01:12 PM

It's not so much environmental temperatures as it is the engine, battery, or inverter temps. Even with the AC on during a high demand time you may see EV denied.

Long and short, don't sweat it. Nothing is wrong, the car's just doing it's job by keeping you from doing something you shouldn't.

**TonyPSchaefer** · 05-04-2009, 01:14 PM

There is an ambient temperature limit. I speculated about this a few years back and Ken confirmed it.

MariaEvri · 05-04-2009, 01:15 PM

Quote:

Originally Posted by efusco

It's not so much environmental temperatures as it is the engine, battery, or inverter temps. Even with the AC on during a high demand time you may see EV denied.

Long and short, don't sweat it. Nothing is wrong, the car's just doing it's job by keeping you from doing something you shouldn't.

alright thanks
Its the first time this happened to me, but then again Ive had the car for only 5 months. Good to hear my little Jazz is taking care of himself.

05-04-2009, 12:35 PM	#1
MariaEvri Member Join Date: Feb 2009 Location: Limassol - cyprus Posts: 45 My Car: 2008 Prius Model: Package: Pioneer #1 Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	can not change to EV mode right now Uusally I get this mesage when the battery is too low, or when the engine is on (warming up I guess??) But today (and yesterday once) I kept giving me this message, even though the battery was almost full, the engine was off and I was moving at extreme low speed. I also tried when the car was still but it still gave me this answer. It did let me use the EVV mode once but most of the time it gave me that message. Enyone knows whats up?

05-04-2009, 12:42 PM	#2
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 17,232 My Car: 2004 Prius Model: Package: #9 Thanks: 49 Thanked 249 Times in 148 Posts Friends: 37	Re: can not change to EV mode right now EV will be denied if the battery is too full, just as it will if it's too low. EV will be denied if the battery temp is too high or too low (not sure the exact temps). EV will be denied at a few other, as yet undefined, times. This happens to me as well and sometimes I'm at a complete loss as to why, but I just satisfy myself that some smart engineer decided that EV would be a bad idea for some reason and programmed it to prevent me from damaging the car.

05-04-2009, 01:12 PM	#4
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 17,232 My Car: 2004 Prius Model: Package: #9 Thanks: 49 Thanked 249 Times in 148 Posts Friends: 37	Re: can not change to EV mode right now It's not so much environmental temperatures as it is the engine, battery, or inverter temps. Even with the AC on during a high demand time you may see EV denied. Long and short, don't sweat it. Nothing is wrong, the car's just doing it's job by keeping you from doing something you shouldn't.

05-04-2009, 01:14 PM	#5
TonyPSchaefer Your Friendly Moderator Join Date: May 2004 Location: Far-North Chicagoland Posts: 10,503 My Car: 2004 Prius Model: Package: #9 Thanks: 39 Thanked 165 Times in 106 Posts Friends: 23	Re: can not change to EV mode right now There is an ambient temperature limit. I speculated about this a few years back and Ken confirmed it.

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