Prius (Gen 3) :: Loud Noise From Back Seat Vent / Cooling Fan


Apr 6, 2015

Fan is pretty clean. Before re-assembly it will be blasted with ~100 psi from an air compressor. Driving around like this is fine for a while to check diagnostics. How noisy is normal? This is the first time I noticed the noise.

We've owned this silver 2011 Gen 3 from new and it now has 37K miles after about 3.5 years. Today it's ~70F in Atlanta, so not hot compared to how it will be soon. We had the s/w recall done about six months ago and I've possibly not driven the car since (have a few cars).. my wife drives it most days and did not notice probably due to music but I felt it was very loud like there was hole in the side of the car (first thought was some vent to the outside became stuck open but the vent near the auxiliary battery is fine).

Is there a way to read the fan speed via Android Torque and Bluetooth OBD? Should I disassemble the entire length of the venting? Might there be something inside there causing a blockage?

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