[dvpatel]

How sure are you that its coming from the speakers? It can be from the speakers. But it may also be from engine mounts or exhaust hangers.

That said, your first mistake was to sign the dotted line and trusting the sales guy.

Your odyssey is equipped with the VCM system. When the engine shuts off 2 or 3 cylinders, it causes a drone. To counter that, the Odyssey is equipped with an ANC system. ANC stands for Active Noise Cancellation. That system pumps counter noise to the said drone.

Some people can hear that ANC noise and you may belong to that category unfortunately.

You should consider trying to disable the VCM system by looking up a VCM disable device like VCMuzzler II or VCMTuner 2 or SVCM. Plenty of posts on that topic.

 

[rfisher83]

What you're saying does sound plausible, though it sounds like you're saying most people don't hear this sound and so far we're 3-for-3 and it is very audible. It is very difficult to be sure where the sound is coming from because it seems to be all-around, so we cannot say for sure that it is coming from the speakers. However, having a movie or music playing does not drown out the sound - it's always noticeable.

This is very interesting, though, and would be good to know if that is what we're hearing. Ultimately we just don't want to be in a situation where something is malfunctioning so if what we're hearing is normal then we may have to deal with it... I'll have to look into this, especially if no one else chimes in with any ideas. Thanks for this!

 

[WiiMaster]

I agree with dvpatel. I would muzzle the VCM anyway. If it solves your problem, great, if not, it's something you probably should do anyway, so it's a win-win.

 

[serega12]

Easy way to test if it's VCM. Next time you drive, drive the van in sport mode. That will disable both the auto idle stop and VCM. That should disable speaker compensation as well.

 

[King Kong TO]

I don't think it's from the speakers or ANC. my ANC were cut off. I think you need the dealer to reset the van so it can relearn your driving style. it happened to mine after software updates it took a few days of driving to get rip of it. it's around 1800-2000 rpm

 

[rfisher83]

Thanks to those who have responded so far, it has led me down a rabbit hole of seeing that I am definitely not alone in this issue. The most recent comment on this post references taking this Service Bulletin to their dealership and they were able to replace the ANC unit and resolve the issue. We're going to at least try that and see where that gets us - we do fall within the VIN range on the bulletin.