07 gs450h whistling sound from engine
#1
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07 gs450h whistling sound from engine
hello, has anyone else heard a whistling sound from engine bay after driving and then parking? It goes on for bout a minute. Its not the usual whirling click sound. I took my car into service and mention it to the service writer. He said its the hybrid system. is that true? i cant seemed to find any comments about it anywhere.
any info will be greatly appreciated.
any info will be greatly appreciated.
#3
This is the Hybrid System cooling pump. The power electronics and motor still need to be cooled after the car is off because they are a lot more sensitive to heat than the engine. It's basically the same reason why you have to idle a turbo'd engine after some abuse so that you don't cook the turbo bearings.
#4
I was surprised by this noise when I first picked up my 450h, but I've been told that it's normal. I wouldn't worry too much about it. It's just the hybrid system cooling down, and I think it powers the electronics.
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thanks
thanks for the replies greatly appreciated. I've had this car for bout 4 years and never really notice that whistling sound. I did notice clicks and whirling sounds usually goin on and off for hours. thanks again.
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