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post #1 of 23 (permalink) Old 05-24-2007, 06:38 PM Thread Starter
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Default Main battery warning light

Hey, I thought I'd try Technical forum as well as Q&A.

I tested battery when turning key and there was no change in meter reading. 12.1
The battery turns my dodge caravan over no prob.
The dome light was on but no change when turning key.
I get absolutely nothing responding when turning key only the computer screen and the flashing main battery.
I pushed the secret button and it did allow the shifter to move but nothing else resulted.
I will try the battery out of my caravan.
What next?
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post #2 of 23 (permalink) Old 05-25-2007, 10:18 AM
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Seems you need to have codes pulled to know what's going on.
Can you at least get to Ig-On normally?
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post #3 of 23 (permalink) Old 05-25-2007, 11:42 AM
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"tuning key"

Classic Prius?

What year?

Vehicle:
Pearl is a 2007 Driftwood Pearl Prius
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post #4 of 23 (permalink) Old 05-25-2007, 01:06 PM Thread Starter
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Default Main battery warning light

Hey,
Ig on, computer screen on, ok
turn key to start. nothing

2001 prius, base model
Tuning key?
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post #5 of 23 (permalink) Old 05-25-2007, 10:16 PM
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I think he meant to question you turning a key.
I assumed this was a classic, since there is no conventional key in the HSD, you instead press a button with a fob in the slot, or in the case of SKS (which most of us HSD owners have), on your person.

Anyway, it doesn't sound like 'nothing', it is giving an error. It won't go into READY if there's a serious problem. It doesn't mean the battery or connection to the battery is bad (such as the system main relays), but that the HV ECU detected a problem that warranted not activating the battery. Many places, such as auto parts stores, will pull codes for free. Granted they may not be able to interpret the code, but at least they can retrieve it. The code will go a long way in determining what the problem is.
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post #6 of 23 (permalink) Old 05-29-2007, 10:11 PM
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if the vehicle was sitting for a few years then you would have a discharged HV battery, i had this problem with my 01 and i created a charger to charge the HV battery.

My toyota fleet, 01 prius,05 prius, 06 tacoma, 04 scion xa
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post #7 of 23 (permalink) Old 05-30-2007, 08:18 AM Thread Starter
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Default Main battery warning light

Hey thks,
I was thinking that very thought that maybe the main batt is just too low. How can I make a charger?
JOe
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post #8 of 23 (permalink) Old 05-30-2007, 10:20 AM
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It's not feasible for an owner to make a charger for the main battery. If you could do this we would be asking you for advice.

Whatever is wrong with this Prius probably needs a certified technician (meaning, a Toyota dealer) to diagnose and fix.

April 2004 Silver
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post #9 of 23 (permalink) Old 05-30-2007, 02:53 PM Thread Starter
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Default feasible

I'll let you know what is feasible for me. You can decide for yourself.
Joe
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post #10 of 23 (permalink) Old 05-30-2007, 03:10 PM
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Default Re: feasible

Quote:
Originally Posted by Joekingiam
I'll let you know what is feasible for me. You can decide for yourself.
Joe
No need to be snide, the poster you were replying to wasn't. The charger for the Prius NIMH is a complex device containing it's own ECU and it connects directly to the HV ECU as well as to the NIMH pack itself. The charge rate is carefully controlled and the logorhythm is proprietary. IOW, you can't just take your average battery charger and add a little 'juice' to the pack without risking damage to it, yourself, the ECUs, and kicking out even more difficult to deal with error codes.

If, OTOH, you have access to the necessary equipment, ECUs, proprietary software and hardware then, by all means, build away. Of course if you had all that you never would have needed to post your question here in the first place.

Evan Fusco, MD
'04 BC/Seaside
Nixa, MO http://greenhybrid.com/compare/milea.../signature.png
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