Hybrid Car – More Fun with Less Gas

Older Prius

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Posted by Steve Giannoni on May 7, 2011, 6:11 pm
2001 with only about 50K miles. Only problem was wheel rim corrosion.
What can I expect as the ultimate longevity, particularly with respect
to the battery, etc.? Other's experiences with high time Prius most
welcome & thanks ...

Posted by bwilson4web on May 7, 2011, 8:12 pm

Your risk factors are:

1) traction battery - depending upon use. So far, no one knows the 50%
failure rate but we've learned that "heat is the enemy." If you can
keep the traction battery cool (aka., park in shade in hot climates in
the summer) and avoid 'heat pumping' the battery in hilly country
(aka., climb at 55 mph to avoid drawing traction battery power) we
don't know how long it takes for them to fail. Fortunately,
replacement traction batteries, rebuilds, are available for less than

2) transaxle MG2 short - we don't know what is going on but some of
them develop an internal short. A replacement transaxle, Ebay, runs
about $00. We reciently learned MG2 can be replaced without having to
swap the whole transaxle but still, it is not a trivial task.

3) catalytic converter failure - we're not sure but there is some
suggestion that over-filled oil can lead to poisoning and failure.
After market catalytic converters are about $00 and add labor to

4) steering torque sensors - these can fail causing the steering to
power-coupled, oscillate. Not fun, the only known repair is about
$,000 for a new assembly. However, I know of at least one older prius
that has the power pulled on power steering assembly so the car goes
into manual steering mode.

Bob Wilson

Posted by Steve Giannoni on May 7, 2011, 8:28 pm
 Thanks for the extensive info ...

On Sat, 7 May 2011 13:12:18 -0700 (PDT), bwilson4web

Posted by bwilson4web on May 7, 2011, 11:33 pm
No problem!

If you'd like more details, I would recommend joining the Yahoo Group,
"Prius_Technical_Stuff." It is 'first post moderated' so you might
want to post a 'hello, I'm ...' introduction so the delay can overlap
your looking through the extensive messages, photos, and files area.

Started in November 2000, it has the brilliant work of the Prius
pioneers. I joined in late 2005 and still consider it the single best
source of independent, current and accurate Prius information bar
none. What most impressed me was when I saw a 'troll posting' receive
complete silence ... nobody replied.

Imagine a quiet library study hall and in runs a three-stooges clown
who announces,"You are all doo-doo heads!" People briefly look up and
continue with their Prius work. I've seen that in
"Prius_Technical_Stuff" to the extent that we seldom have 'flame wars'
that so bedevil other forums.

Bob Wilson

Posted by Steve Giannoni on May 8, 2011, 12:25 am
 Bob -

Not familiar with Yahoo Groups.

Please get me over to "Prius_Technical_Stuff" & thanks ...


On Sat, 7 May 2011 16:33:15 -0700 (PDT), bwilson4web

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