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post #1 of 7 (permalink) Old 06-30-2008, 09:41 PM Thread Starter
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Default the car exclamation point light is on

Hi,
have a 2001 Prius with 50,000 miles, has been great so far.
Today, came home from work and when I got back in the
car, the red warning car exclamation point light is on.
The book says "take it to your Toyota dealership immediately."
What is the possible diagnosis?
Thanks for any info.
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post #2 of 7 (permalink) Old 07-01-2008, 12:00 AM
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Default Re: the car exclamation point light is on

There are several possibilities, ranging from trivial to rather expensive. We cannot do the diagnosis from here. You must visit the shop. If the car appears to drive normally, just do so. If it makes unusual noises or other strange behavior, you must arrange for a tow, and a 'flat tow' where they winch it onto a flatbed truck would be preferred.

Report what they say, **especially** DTCs and subcodes, and we can tell you more. Good luck, and don't lose sleep because it's probably minor (or the ECU with 60k mile warranty

DAS
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post #3 of 7 (permalink) Old 07-01-2008, 07:50 PM Thread Starter
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Default Re: the car exclamation point light is on

Hi,
this morning the light is NOT on.... and it seems to be running fine.
Will still take it into the Toyota dealership for a check-up,
but is there any hurry? I love my prius.
Thanks.
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post #4 of 7 (permalink) Old 07-01-2008, 10:03 PM
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Default Re: the car exclamation point light is on

Did you remove/retighten the gas cap, or any other other of the simple tweaks?

I'm not inclined to tell you to rush to the shop. In part because I don't know if your shop is any good. But if by chance we are talking about TSB EG011-03 here and the replacement ECU is indicated, that is only free until 60k miles. So please treat that odometer as an absolute deadline. Naturally I'm curious, and would like to know sooner of there are any DTCs stored.

DAS
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post #5 of 7 (permalink) Old 07-02-2008, 03:32 AM
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Default Re: the car exclamation point light is on

With our 2002 Prius, I have only seen that screen once. While yours may not be the same problem, you may want to search this site for posts on hybrid module coolant pump to see if those symptoms look familiar.
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post #6 of 7 (permalink) Old 07-03-2008, 01:36 AM
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Default Re: the car exclamation point light is on

That is a good suggestion. Sherner, start the car, leave in "P", set the foot brake and open the hood. Now look at the inverter coolant reservoir tank. Its electric pump is circulating the coolant in this mode. The fluid inside should look like it's being pumped, with a distinctly higher liquid level in the forward part of the reservoir. If it doesn't look that way, the coolant pump may be performing poorly, or there is air in the system.

DAS
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post #7 of 7 (permalink) Old 07-05-2008, 08:31 PM
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Default Re: the car exclamation point light is on

Was there any message on the screen? You can get a message and exclamation point just by not closing the driver's door completely and putting it into gear.

2005 Seaside Pearl, BC#6
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