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2005 Prius Hybrid System Warning Light


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danjump
New User

Mar 5, 2014, 7:18 PM

Post #1 of 2 (1213 views)
2005 Prius Hybrid System Warning Light Sign In

Hi all,

I've got some issues with my 2005 Toyata Prius (~150,000 miles), and I hoped someone could help shed light on them. My wife was driving recently and the "Master Warning Light", the "Hybrid System Warning Light" and the yellow "Brake System Warning Light" all came on.

Some quick reading of the owners manual said we should take it to a dealer right away, but because it was a yellow, and not red, brake system warning light it seems ok to drive at least to a dealer. in regard to the yellow brake system light the manual said it could be that: "the regenerative brake system failed or that the hydraulic brake system failed"

With that said, I don't want to blindly bring it in to a dealer without having at least some clue as to what's going on. Does anyone have any experience with these warning? Can you suggest what might be the problem or any tests I could do, or that I could ask the mechanic to do?

Now, I have a cheap bluetooth OBD reader hooked up to the "torque" app on my phone and I thought I would try to see what error codes there were to learn more. But strangely, it did not read any fault codes. I've used this reader successfully on my 2001 Mitsubishi galant, but I'm not reading anything for the prius in this case. I'm not sure if there is legitimately no error code associate with the warning lights or if my app is just failing to read them for some reason. If anyone has any ideas about this as well, please let me know!

Thanks in advance for replies!


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 6, 2014, 3:35 AM

Post #2 of 2 (1192 views)
Re: 2005 Prius Hybrid System Warning Light Sign In

That code reader can't see anything but generic powertrain codes. You need a lot more sophisticated equipment to find these problems.



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