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#1 (permalink) Old 05-29-2006, 09:09 AM
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Default HELP PRIUS WON'T START

Car was fine Saturday night and then 24 hours later its totally dead. Pushing start button does nothing. I tried using jumper cables to get it going but no success. Any idea what happened? It's locked in park so getting it out of the driveway for towing to dealer is going to be very difficult.
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#2 (permalink) Old 05-29-2006, 10:12 AM
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What year Tom? And how long have you had the car? You are posting a "classic" and common complaint of the small 12 volt battery in the trunk being completely "flat." Really work on that battery jump. I've read many posts here that the system described in the owners manual is not sucessful I would guess 15% of the time. So, can you get to the battery in the trunk and directly jump it there. Not one other switch, button or any thing electrical will work when that small battery is "ka-poot."
If the cars, say three years old and you have access to the trunk I would suggest just slipping a new battery in and then looking for the "switch" you left on that killed the electrics. Whatever you do, it will relate to that battery and I'm sure car will not have to be towed to a dealer.
Don't feel too stupid if you find you left a light switch on or a door cracked open. A lot of people have and the fact that Toyota left those small 12 volts in the car since "day one" hasn't helped. A standard battery in that cavernous compt. would have corrected most all this type of a problem by retaining power a couple days with the dome lights on and the replacement costs of a new battery would be "dirt cheap."
Just another, "I wonder why?"
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#3 (permalink) Old 05-29-2006, 10:24 AM
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Default PRIUS YEAR

It's a 2005 which has been trouble free for 2 years. Thanks for the advice. Will try getting to the battery now,.
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#4 (permalink) Old 05-29-2006, 11:15 AM
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Default GOT IT RUNNING. THANKS

I was finally able to get the jumper thing to work via the engine compartment.

I could not get the back hatch open because it was not fully closed. That was the root cause of the problem... batter drained due to hatch light burning for about 36 hours. After I got it going I was able to open the hatch.



Thanks,.
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#5 (permalink) Old 05-29-2006, 12:26 PM
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I think there's a hatch release inside the car. Emergency thingy - not a "wouldn't that be convenient" thingy. Somewhere in back. Could use that, if you ever have to, to get the hatch open to reach the battery.

Good for you for diagnosing the problem, and fixing it! Well done!

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#6 (permalink) Old 05-29-2006, 08:43 PM
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When you were having problems did you loose the auto driver window up stop function. That nails the dead battery thing. It is sadly a small battery and can be abused. I wonder if there should be a routine change interval for the battery.

operator of a 04' Millennium Silver BC #9 \\"Belle\\"
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#7 (permalink) Old 05-30-2006, 08:08 AM
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An easy way to tell if your battery is dead: can you operate your personal/map lights located in the console? How about the dome light set to ON rather than DOOR? If lights don't work, battery dead or main/dome fuse blown. These lights don't require any power mode or electronics to operate this way.

It can be tricky to get a good solid electrical contact in jumping from under the hood. One common mistake is trying to connect to the screw post rather than the metal tab. 2nd common problem is getting a good ground. I often have difficulty with the latter in any car.
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#8 (permalink) Old 05-30-2006, 08:43 AM
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And of course the easiest that Tomrdillon found. Absolutely "nothing" worked!
The question remains. We have seen this sort of writeup at least twice a month since the Prius went into production and simply because that "baby" battery will not handle any type of depletion as with the dome lights over night.
The compartment in the rear is "huge" and a standard sized 12 volt battery which would operate the dome lights for several days would fit easily, and would be much less expensive when replacement was due.
I just don't get these guys. When seats are a major complaint, batteries are undersized, driving positions are uncomfortable, most manufacturers correct the difficiencies in nest years model. Not add a TV camera in the rear! (I know, all this battery is expected to do is turn on the computer. Then why not go for a couple of "D's")
I sort of expect that each new years models will be improved over last and not just have a couple of new exotic electrics added.
I'de be very interested in looking at an 07 Prius if I heard it had comfortable seats, a new battery and a telescoptic steering wheel.
Something new in the "blue-tooth" vein just won't "cut it."
I wonder if anyone in local dealer sales has any feedback at all with Toyota? Rickey could probably give them a lot of usefull info.
I get the idea that Toyota believes their original engineering is "infallible"
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#9 (permalink) Old 05-30-2006, 08:51 AM
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The reason for the specialized battery is location, not just size. Because it is in the cabin area, it needs to be sealed to prevent corrosive acid spill that can ruin your hatch body floor, and vented to prevent a possible rare occurance of explosive hydrogen gas accumulation in the cabin.
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#10 (permalink) Old 05-30-2006, 12:01 PM
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Always lock the doors, no matter where you park. It's more secure, and if anything is ajar the car will beep at you. Problem prevented.

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