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I believe the air apparent in the sight glass is a sign you're low on coolant.
From the OP, it sounds like the car completely dies, no MFD. A voltmeter may be needed.
If your code reader is a generic scanner, it may not read the hundreds of Prius-specific codes relating to the hybrid system. You may need to use...
If you're going to try to work on this yourself, an inexpensive digital volt meter will be one of the important tools. Harbor Freight Tools often...
You can check your "parasitic draw" with a DC ammeter in series with the negative terminal and ground. If it approaches or exceeds 100 mA, you...
The battery is probably due to be changed, but not an emergency. Start shopping around. You got some good tips above. I also found the Toyota...
Are the splash shields in place? Any chance you could have gotten glycol on the front brake disks? If the gas engine seems sluggish, don't...
Do you have a volt meter to check the battery?
To be clear, it's not exactly a timer. You have to perform a "drive cycle." I don't have the drive cycle requirements for the Prius, but for...
CARB is California Air Resources Board or something like that (I'm too lazy to Google it, too). In some states that have adopted CARB standards,...
The chemical battery will age depending on ambient heat and number of charge cycles, not necessarily related to odometer miles like a mechanical...
Keep in mind a $4-5000 replacement Gen 2 will likely have many of the same pending issues in the next year or two. I think it makes some sense to...
It refers to a relay inside the battery case. Here's the document on it.
And if you're working around all those airbags without disconnecting the 12V battery, you should read up on the subject.
I would not drive the car if it has a coolant leak. Is the upper bleeder valve open? If that is where your coolant leak is coming from, you need...
What is the no-load voltage of the 12V battery? When my CM failed, I was always able to start and drive the car, and able to stop it with a...
Yes, it's not a big deal. I agree no harm has been done by not catching the problem earlier. I let mine slide for years before finally getting...
I guess that makes sense on a couple of levels. Lower voltage difference with the alternator not running, and no moving parts. I saw someone drop...
It sounds like the brake actuator pump has failed. There is an extended warranty available in the US for that part. I hope you can get similar...
I also suggest proceeding very carefully. You not only have a shock hazard, there are flash hazards and chemical hazards as well. There is...