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Car Forum / Toyota / Prius / March 2007

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2003 Prius plug-in?

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phil_thayer - 10 Mar 2007 19:25 GMT
On calcars.org, I found the statement, "Current PHEV purchasing
options are limited. Initial conversions are for 2004-2007 Prius (not
2001-2003 Prius)",  Anybody know why PHEV is not available for the
2003 Prius ?  I like the size, visibility, turning radius, and
inexpensiveness of the Prius 2003 vs. the later models and I would buy
a 2003(or earlier) model in a flash if I could turn it into a plug-
in.  Is that possible or is there some fundamental technical
obstacle ?  Any advise is appreciated.  Thanks.
Bob Wilson - 11 Mar 2007 22:02 GMT
> On calcars.org, I found the statement, "Current PHEV purchasing
> options are limited. Initial conversions are for 2004-2007 Prius (not
> 2001-2003 Prius)",  Anybody know why PHEV is not available for the
> 2003 Prius ?  

The 2004-current, NHW20 model Prius has an EV mode option that puts the
vehicle in electric vehicle (EV) mode. The 2001-2003, NHW11 lacks this
built-in feature.

> . . . I like the size, visibility, turning radius, and
> inexpensiveness of the Prius 2003 vs. the later models and I would buy
> a 2003(or earlier) model in a flash if I could turn it into a plug-
> in.  Is that possible or is there some fundamental technical
> obstacle ?  Any advise is appreciated.  Thanks.

I have toyed with the idea but think a better approach is to look at an
engine 'topping' cycle using a turbo-alternator to improve ICE
efficiency.

Bob Wilson
Michelle Steiner - 12 Mar 2007 07:22 GMT
> The 2004-current, NHW20 model Prius has an EV mode option that puts
> the vehicle in electric vehicle (EV) mode.

Not in the USA, it doesn't.  It's not even an option here.

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Mike Rosenberg - 12 Mar 2007 13:38 GMT
> Not in the USA, it doesn't.  It's not even an option here.

Not from Toyota, of course, but there's a conversion kit from Coastal
Electronics for anyone who really wants it.

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Michelle Steiner - 13 Mar 2007 08:34 GMT
> > Not in the USA, it doesn't.  It's not even an option here.
>
> Not from Toyota, of course, but there's a conversion kit from Coastal
> Electronics for anyone who really wants it.

Right, but as I said, that doesn't make it an option.  When one says
that a feature is an option on a vehicle, in common parlance that means
you can buy a car with that feature for extra money.

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Greg - 12 Mar 2007 14:20 GMT
The EV Mode OS firmware is accessible on US models.
Several, including CoastaleTech.com and others offer
installation kits:

http://www.autobeyours.com/EV.htm

http://www.autobeyours.com/EV.htm

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>> The 2004-current, NHW20 model Prius has an EV mode option that puts
>> the vehicle in electric vehicle (EV) mode.
>
> Not in the USA, it doesn't.  It's not even an option here.
Greg - 12 Mar 2007 14:23 GMT
Sorry, one of those URLs should have been:

http://www.coastaletech.com/electric_only_mode.htm

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> The EV Mode OS firmware is accessible on US models.
> Several, including CoastaleTech.com and others offer
[quoted text clipped - 15 lines]
>>
>> Not in the USA, it doesn't.  It's not even an option here.
Bob Wilson - 12 Mar 2007 14:28 GMT
> > The 2004-current, NHW20 model Prius has an EV mode option that puts
> > the vehicle in electric vehicle (EV) mode.
>
> Not in the USA, it doesn't.  It's not even an option here.

As the other posted pointed out, the button and wires needed to manually
activate it are not sold in the North American models. However, the
control pins are known and it is easy enough to wire up. One word of
caution.

Those who have  performed the modification report it works up to about
34 mph in today's vehicles. Others in Europe and Austrailia report a 28
mph limit. Although useful for neighborhood streets, it has limited
utility on higher-speed streets.

Bob Wilson
Michelle Steiner - 13 Mar 2007 08:31 GMT
> > > The 2004-current, NHW20 model Prius has an EV mode option that
> > > puts the vehicle in electric vehicle (EV) mode.
[quoted text clipped - 4 lines]
> manually activate it are not sold in the North American models.
> However, the control pins are known and it is easy enough to wire up.

True, but that doesn't make it an option.

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phil_thayer - 17 Mar 2007 13:48 GMT
> On calcars.org, I found the statement, "Current PHEV purchasing
> options are limited. Initial conversions are for 2004-2007Prius(not
[quoted text clipped - 4 lines]
> in.  Is that possible or is there some fundamental technical
> obstacle ?  Any advise is appreciated.  Thanks.

I found a partial answer to my question at :
http://hybrids-plus.com/pmwiki/index.php?n=Ext.FAQ#toc7

Do you convert older generation Prius cars?

No, sorry, at this point we only convert Prius model year '04, '05 and
'06. It's because the older generation Prius model uses a somewhat
different technology than the '04 model, which doesn't lend itself to
effective PHEV conversions.
 
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