My Prius comes out of EV mode at 30mph

prius2go · 08-21-2007, 07:27 PM

why?
I thought it was supposed to be 34mph
Is there a way of raising it to about 38mph

I know about the MG1 rev issue

hybrid taxi · 08-21-2007, 07:33 PM

<div class='quotetop'>QUOTE(prius2go @ Aug 21 2007, 06:27 PM) [snapback]500001[/snapback]</div>

Quote:

why?
I thought it was supposed to be 34mph
Is there a way of raising it to about 38mph

I know about the MG1 rev issue
[/b]

the issue is what ?

prius2go · 08-21-2007, 07:43 PM

or was it MG2 :P

Due to the epicyclic gearbox the engine (ICE) has to start up to prevent one of the electric motors over revving above a certain speed
which I thought was higher than 30mph
I think its in the useful sticky stuff at the top of this forum

geodosch · 08-21-2007, 08:32 PM

<div class='quotetop'>QUOTE(prius2go @ Aug 21 2007, 07:27 PM) [snapback]500001[/snapback]</div>

Quote:

why?
I thought it was supposed to be 34mph
Is there a way of raising it to about 38mph

I know about the MG1 rev issue
[/b]

It's not just the MPH. If you accelerate too quickly, or if your SOC drops too low, it will exit EV mode.

philmcneal · 08-21-2007, 08:37 PM

<div class='quotetop'>QUOTE(GeoDosch @ Aug 21 2007, 05:32 PM) [snapback]500032[/snapback]</div>

Quote:

It's not just the MPH. If you accelerate too quickly, or if your SOC drops too low, it will exit EV mode.
[/b]

54 km/h is the max ev mode speed, you can engage ev at 55km/h but i find it sometimes kick me out so i use 54km/h as a safe bet.

soc below 50% EV mode will not engage, lowest i've seen in ev mode is 48% (two pink bars).

coolant must be above 40 degrees C and engine must be finished with "enrichment fuel mode" when starting the engine for the first time (anyone know how to bypass this stupid step please let me know since i use an engine block heater)

ken1784 · 08-21-2007, 10:30 PM

<div class='quotetop'>QUOTE(prius2go @ Aug 22 2007, 08:27 AM) [snapback]500001[/snapback]</div>

Quote:

why?
[/b]

Because UK Prius manual says the EV mode is canceled at 28 mph.
Japaanese Prius manual says it is 55 km/h (34 mph).

Ken@Japan

Wayne · 08-22-2007, 12:19 AM

You have to be reasonably gentle to get to 34 MPH. I typically exit in the high 20's... Acceleration matters.

prius2go · 08-22-2007, 03:30 AM

<div class='quotetop'>QUOTE(ken1784 @ Aug 22 2007, 03:30 AM) [snapback]500084[/snapback]</div>

Quote:

Because UK Prius manual says the EV mode is canceled at 28 mph.
Japaanese Prius manual says it is 55 km/h (34 mph).

Ken@Japan
[/b]

Ken that looks like the reason
Is there different software for different markets?
Or a config setting somehwere?

ken1784 · 08-22-2007, 04:14 AM

<div class='quotetop'>QUOTE(prius2go @ Aug 22 2007, 04:30 PM) [snapback]500167[/snapback]</div>

Quote:

Ken that looks like the reason
Is there different software for different markets?
[/b]

I believe so.
I'm curious how they are wrriten on other EU/AU/NZ Prius manuals.

Quote:

Or a config setting somehwere?
[/b]

I don't think the setting is configurable.

Ken@Japan

T-spirit · 08-23-2007, 07:00 AM

Mine drops out at between 30mph and 32mph. UK Spec T-Spirit.

Was quite surprised as the manual says 28mph (which is a bit annoying if that is the case)

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08-21-2007, 07:27 PM	#1
prius2go Senior Member Join Date: Aug 2006 Posts: 254 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	why? I thought it was supposed to be 34mph Is there a way of raising it to about 38mph I know about the MG1 rev issue

08-21-2007, 07:43 PM	#3
prius2go Senior Member Join Date: Aug 2006 Posts: 254 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	or was it MG2 :P Due to the epicyclic gearbox the engine (ICE) has to start up to prevent one of the electric motors over revving above a certain speed which I thought was higher than 30mph I think its in the useful sticky stuff at the top of this forum

08-22-2007, 12:19 AM	#7
Wayne Senior Member Join Date: Aug 2005 Location: Fort Wayne, IN Posts: 676 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	You have to be reasonably gentle to get to 34 MPH. I typically exit in the high 20's... Acceleration matters.

08-23-2007, 07:00 AM	#10
T-spirit Junior Member Join Date: Jul 2007 Location: Bristol, UK Posts: 12 My Car: 2007 Prius Package: T Spirit Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Mine drops out at between 30mph and 32mph. UK Spec T-Spirit. Was quite surprised as the manual says 28mph (which is a bit annoying if that is the case)