Dead Battery

Toyota Prius - - Best car on the road 

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Subject Author Date
Dead Battery TKM 02-24-2008
|--> Re: Dead Battery Michelle Steine...02-24-2008
---> Re: Dead Battery Elmo P. Shagnas...02-24-2008
---> Re: Dead Battery richard schumac...02-25-2008
---> Re: Dead Battery Michelle Vadebo...03-01-2008
Posted by greenpjs on February 25, 2008, 7:48 am
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wrote:

>In article
>
>> After a week of sitting in the garage, we got into our 2006 Prius and found
>> there was no power--everything was dark and dead. After finding and
>> uncovering the 12 volt battery, I checked the voltage and found it to be 2.5
>> volts -- definitely discharged.
>>
>> A jumper from another car got the Prius going; but I'm curious. Has anyone
>> else had this experience? The car was turned off normally. No lights were
>> left on and we we just do the usual city/country driving . The propulsion
>> battery was fine and showed a normal charge as soon as the car started.
>>
>> TKM
>
>Keep in mind that some systems such as the Smart Key system require
>power even when the car sits unused. This is why the owners manual
>recommends turning off the battery when you know you won't be using the
>car for a week or more. The switch is under the steering wheel near your
>left knee.

The above is true, but our 2004 has been left for a week without
having a dead battery. However, there were two other times the
battery really had been depleted, it turned out someone had been
sitting in the car listening to the radio and then "thought" they
turned it off. Either it was left in the accessory mode or in the
"on" mode (but not started). We now double check that the car is
really off if we have done something unusual like use the accessory
mode in a parking lot. ...Pat


Posted by richard schumacher on February 25, 2008, 9:55 pm
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> Keep in mind that some systems such as the Smart Key system require
> power even when the car sits unused. This is why the owners manual
> recommends turning off the battery when you know you won't be using the
> car for a week or more. The switch is under the steering wheel near your
> left knee.

That switch turns off the SKS. There is no switch which disconnects the
12V battery.

Posted by Shawn Hirn on February 26, 2008, 8:37 pm
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>
> > Keep in mind that some systems such as the Smart Key system require
> > power even when the car sits unused. This is why the owners manual
> > recommends turning off the battery when you know you won't be using the
> > car for a week or more. The switch is under the steering wheel near your
> > left knee.
>
> That switch turns off the SKS. There is no switch which disconnects the
> 12V battery.

Right, and the SKS continuously draws battery power so switching it off
saves battery power.

Posted by fuelzilla.com on February 26, 2008, 1:42 am
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Shawn Hirn wrote:


> Keep in mind that some systems such as the Smart Key system require
> power even when the car sits unused. This is why the owners manual
> recommends turning off the battery when you know you won't be using the
> car for a week or more. The switch is under the steering wheel near
> your left knee.


I have left my 2007 Prius at home and at long term parking lots for more
than a week several times and had no problem starting it. I would imagine
the smart key system draws only a trickle of power in the listening mode.

I think the recommendation should read "if you wont's be using your car
for weekS (plural)" or maybe even months.

In this case it's more likely someone left radio on.




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Posted by richard schumacher on February 25, 2008, 9:53 pm
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In article

> After a week of sitting in the garage, we got into our 2006 Prius and found
> there was no power--everything was dark and dead. After finding and
> uncovering the 12 volt battery, I checked the voltage and found it to be 2.5
> volts -- definitely discharged.
>
> A jumper from another car got the Prius going; but I'm curious. Has anyone
> else had this experience? The car was turned off normally. No lights were
> left on and we we just do the usual city/country driving . The propulsion
> battery was fine and showed a normal charge as soon as the car started.

Something was left on. Of course now it's impossible to prove either
either way.

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