Prius HV Battery Fan, temp start?

should be on, i wonder if the motor has burned out?

 

you can put a volt meter on to to see if it's getting power. an ohm meter will tell you if the motor is burned out. that would be unusual, not sure i have heard of it happening before.

 

Everything is fine.

Didn't hear it at all on my drive home (in Phoenix). 115°F on the gauge. The battery is a mass of insulated nickel that is slow to heat/cool in ambient conditions. It's unlikely the battery reached 115°F. Additionally, 115°F isn't particularly high for the battery either. It starts to dial back usage in that area, but it performs well.

The fan is very quiet on settings 1-4. It will be on 1-3 most of the time. You can kinda hear it on 5, and 6 is when everybody goes, "Wth is that sound?" If you're running your A/C, you barely hear 6.

Run your A/C and keep yourself comfortable. Do that, and the battery is comfortable too.

 

perfect.

 

NiMH doesn't feel the heat quite like we do. Parking in the shade, using a front windshield shade and keeping the windows cracked 1/2 inch goes a long way towards keeping the interior cooler than just parked in the sun willy-nilly.

 

Scangauge II, with XGauges programmed in, will show battery temp and fan speed. Keep in mind: even with cool ambient temps the battery temp will climb.

In my (3rd gen) experience, driving in cool evening, the battery will be around 35C. Any higher and the fan will come on, at lowest speed. Highest I've seen is around 45C, with fan around 3~4 (out of 6?). Even then, I've yet to hear it, fwiw.

Worst case I've found: extended drive on hot day, park and let it sit in sun, get back in and drive some more. Also, found AC use made little or no diff to battery temp.