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Good afternoon!
I'm trying to determine if what I am hearing is normal hybrid stuff. I have a 2018 Accord hybrid touring, and I have noticed that during driving I get a noticeable high pitched "whistle" from the vent directly below the back seat leading to the hybrid battery.
If nothing else I have very specific information on how to reproduce the sound, however Honda technicians didn't really notice any sound, and when recordings of it are played they agree the sound is present, but that it doesn't sound like any real problem.
1) The sound is a very high pitched whistle that comes from the fan vent under the back seat.
2) The sound will come on only when driving at constant freeway speeds (60mph +)
3) If the speed drops below 60, the sound will immediately stop. I can NOT get the sound at anything less than sustained freeway speeds.
4) Under sustained freeway speeds, the whistle will appear, remain for anywhere from a few minutes to over 10 minutes, and then disappear for just as long. The noise appears to cycle on and off without any real rhyme or reason, but it does cycle.
My guess is that this sound is the cooling fan for the hybrid battery. I assume that the fan is always running, when the car is driving, but that perhaps the noise I am hearing is when the battery fan kicks into a higher speed. But it sure sounds like the fan has a bad bearing or something.
Are you supposed to be able to hear the battery cooling fan? And if it really is the cooling fan, why does it shut off IMMEDIATELY upon getting under 60mph? I would think it would need to continue cooling for a little while.
Thanks in advance for any suggestions!
I'm trying to determine if what I am hearing is normal hybrid stuff. I have a 2018 Accord hybrid touring, and I have noticed that during driving I get a noticeable high pitched "whistle" from the vent directly below the back seat leading to the hybrid battery.
If nothing else I have very specific information on how to reproduce the sound, however Honda technicians didn't really notice any sound, and when recordings of it are played they agree the sound is present, but that it doesn't sound like any real problem.
1) The sound is a very high pitched whistle that comes from the fan vent under the back seat.
2) The sound will come on only when driving at constant freeway speeds (60mph +)
3) If the speed drops below 60, the sound will immediately stop. I can NOT get the sound at anything less than sustained freeway speeds.
4) Under sustained freeway speeds, the whistle will appear, remain for anywhere from a few minutes to over 10 minutes, and then disappear for just as long. The noise appears to cycle on and off without any real rhyme or reason, but it does cycle.
My guess is that this sound is the cooling fan for the hybrid battery. I assume that the fan is always running, when the car is driving, but that perhaps the noise I am hearing is when the battery fan kicks into a higher speed. But it sure sounds like the fan has a bad bearing or something.
Are you supposed to be able to hear the battery cooling fan? And if it really is the cooling fan, why does it shut off IMMEDIATELY upon getting under 60mph? I would think it would need to continue cooling for a little while.
Thanks in advance for any suggestions!