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Almost without fail, whenever my 2018 Accord Hybrid hits 55MPH (not above or below - right at 55) there is a loud humming. A slight vibration or droning noise if you will. I have seen reference to noise canceling issues or this happing at lower speeds or it goes away after the car warms up. For me, it only happens right at 55. Warm or cold.
As such, just like Sammy Hagar, I can’t drive 55.
Has anyone else experienced this or gotten an explanation from the dealer? I haven’t been able to schedule the 3-4 hours they want to diagnose it (but with my luck they won’t be able to recreate it ?)
 

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Almost without fail, whenever my 2018 Accord Hybrid hits 55MPH (not above or below - right at 55) there is a loud humming. A slight vibration or droning noise if you will. I have seen reference to noise canceling issues or this happing at lower speeds or it goes away after the car warms up. For me, it only happens right at 55. Warm or cold.
As such, just like Sammy Hagar, I can’t drive 55.
Has anyone else experienced this or gotten an explanation from the dealer? I haven’t been able to schedule the 3-4 hours they want to diagnose it (but with my luck they won’t be able to recreate it ?)
Yes I have same issues found in my new 2020 Honda accord hybrid today. I found when I
 

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Yes I have same issues found in my new 2020 Honda accord hybrid, I just buy before fifteen days ago and noticed that many many times its humming noise comes from engine or while increasing speed between 50-55 mph.
 

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I bought a 2019 Honda Accord Hybrid five days ago. I noticed this loud harmonic noise two days after purchase. It seems to occur around 54 mph. I had my car into my local Honda dealer today. They heard the noise too. They could not figure it out so they contacted Honda America. They learned this is a known problem and it is under investigation. They are ordering three noise cancelling microphones for my car. They will have to remove the headliner, check the insulation, and replace one or two or all three of the mics. They told me there was a 50 50 chance this would fix the problem. I am really not happy about this. I barely have 400 miles on this car. Since this is a known problem I don't know why they are selling these cars when the issue is not resolved. At the very least they should disclose the issue to customers BEFORE they sell you the car. Once the parts are in and installed I will let you know if it resolves the issue or not.
 

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I bought a 2019 Honda Accord Hybrid five days ago. I noticed this loud harmonic noise two days after purchase. It seems to occur around 54 mph. I had my car into my local Honda dealer today. They heard the noise too. They could not figure it out so they contacted Honda America. They learned this is a known problem and it is under investigation. They are ordering three noise cancelling microphones for my car. They will have to remove the headliner, check the insulation, and replace one or two or all three of the mics. They told me there was a 50 50 chance this would fix the problem. I am really not happy about this. I barely have 400 miles on this car. Since this is a known problem I don't know why they are selling these cars when the issue is not resolved. At the very least they should disclose the issue to customers BEFORE they sell you the car. Once the parts are in and installed I will let you know if it resolves the issue or not.
First... Welcome to the forum.... glad to have you join us.

Depending on where you are located and only owning the car for five days you may be able to cancel the deal and walk away from the car. Along w/that if you decide to keep it you may want to look into the lemon laws for your state. Most lemon laws allow a certain amount of return visits for the same problem w/o it being corrected you can return the car.

Now, on the other hand if you really like the car and want to give Honda a chance to correct it you may have to be patient. They have admitted they are aware of the issue so that in itself is a plus (a lot better than them saying no issue exists). Hopefully this issue will be resolved and those affected will be satisfied when it is. Good luck and keep us posted.
 

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First... Welcome to the forum.... glad to have you join us.

Depending on where you are located and only owning the car for five days you may be able to cancel the deal and walk away from the car. Along w/that if you decide to keep it you may want to look into the lemon laws for your state. Most lemon laws allow a certain amount of return visits for the same problem w/o it being corrected you can return the car.

Now, on the other hand if you really like the car and want to give Honda a chance to correct it you may have to be patient. They have admitted they are aware of the issue so that in itself is a plus (a lot better than them saying no issue exists). Hopefully this issue will be resolved and those affected will be satisfied when it is. Good luck and keep us posted.
Thank you. I live in California. I have previously owned a 2000 Honda Accord SE and a 2016 Honda Accord V6 Touring. I loved them both. I only traded in the 2016 because I wanted better gas mileage and I got a pretty good offer from the dealer. I am unsure about what I want to do at this point. Hopefully the repair will fix the problem. American Honda does not seem to be in any rush to resolve this matter as it apparently is a known issue on 2018, 2019, and 2020 Honda Accord Hybrids. Their investigation seems awfully slow. Beyond this very annoying noise I do really like the car. I guess I will just keep my fingers crossed that replacing the mic(s) will fix it. I will let you know the results. Have a Happy Thanksgiving! ?
 

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Mine hums at 52mph. Going in for the first (10,000 mile) oil change this week, will report back on what they say. Does anyone know if there is a Service Bulletin on this?
 

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I don't know if it was a service bulletin, but when I was at the dealer for them to check it they showed me something they had printed out after they contacted Honda that briefly described the problem, stated it was a known problem that was under investigation, and suggested replacing the ANC (active noise cancelling) microphones as a possible fix. I did not read the whole thing as the service technician showed it to me rather quickly. The technician told me that once they get the parts in they would remove the head liner, check the insulation, and replace one, two, or all three mics. But there is only a 50 50 chance this will resolve the issue. I am not going to be happy if this doesn't fix it as I only have less than 500 miles on the car. Good luck with your vehicle.
 

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Update on my car. It went into the shop yesterday. Found out there was a Service News for the Noise Cancelling Microphones with Honda America. Someone had asked about this in an earlier post. Anyway, my local Honda service department replaced the mid and rear microphones (the front looked okay so was not replaced) of the Active Noise Canceling (ANC) system. They found the mid microphone was damaged with glue (they are not supposed to be glued in) and the insulation was cracked around the rear microphone. On test drive they were no longer able to detect the noise. They kept my car over night and test drove it again this morning as there was some report from Honda America that the noise may only occur when the outside temp is below 50 degrees. Of course, it was about 55 degrees this morning so there was no noise but that part of the test was inconclusive. My service shop will be sending a report regarding what they found on my car to Honda America in the hope that it will further aid in the investigation of this problem on other cars. After I picked up the car I took it for about a 45 minute drive on the freeway. I did not hear the noise. So my fingers are crossed that this has resolved the issue. If it recurs in the future I will let you know. Good luck to those of you that are still experiencing this problem.
 

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Apparently I spoke to soon when I posted on Saturday. On Sunday I went for a drive with my neighbor and the car started making the exact same noise again. It was about 58 or 59 degrees outside so Honda's idea that the sound only occurs at colder temperatures is clearly not an accurate hypothesis. Replacing the Active Noise Cancelling (ANC) microphones had no effect. The car is going back into the shop on Friday. They are giving me a loaner car as they tell me they will need the car for several days to investigate the issue further. I bought the car Nov. 22nd and it has been in the shop at least once a week every week since I bought it. They need to get this issue resolved. It is ridiculous to experience this nonsense on a $30,000+ car. ?
 

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A little over a week ago they disconnected my blue tooth microphone. I have not heard the noise since. I am supposed to call them back on January 2nd. They will have to replace the microphone. Hopefully the problem will not return then. But currently, without the blue tooth mic I cannot make calls or use any voice commands. If someone calls me while I am driving I can hear them but I cannot respond as there is no mic to transmit my voice to them. This is unacceptable in a new car. Once they replace the blue tooth microphone I will let you know if that solves the problem once and for all or not. This whole thing has been so frustrating.
 

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Pam, thanks for the update. I am noticing this same sound in my 2020 HAH Touring when driving 51-53 MPH. I'm hoping that they are able to resolve the issue for you once they replace the Bluetooth mic.
 

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Almost without fail, whenever my 2018 Accord Hybrid hits 55MPH (not above or below - right at 55) there is a loud humming. A slight vibration or droning noise if you will. I have seen reference to noise canceling issues or this happing at lower speeds or it goes away after the car warms up. For me, it only happens right at 55. Warm or cold.
As such, just like Sammy Hagar, I can’t drive 55.
Has anyone else experienced this or gotten an explanation from the dealer? I haven’t been able to schedule the 3-4 hours they want to diagnose it (but with my luck they won’t be able to recreate it ?)
I had the same issue with my 2018 Honda Accord Hybrid Touring. The issue has been resolved now- after months of this issue.

Noise Cancellation system issue. The dealer needed to be essentially led by hand to find a fix.
They reflashed my Vehicles center/audio software.
I also had the rubber seal for the driver side door (the thin strip that connects close to the rear door).
Overtime getting in and out of the car, with the seat sitting so low, We are not noticing that our arms we are not noticing that our shoulders or forearms are rubbing against that material which can wear it.

I asked the dealer to install another rubber strip and reinstalled my software and the issue was finally resolved. Just resetting the software through the touch screen will not fix it.

The android-based software the vehicle uses, I think is the problem.

Sometimes the system will act wonky, and essentially will force you to do a reset. But after the dealership reinstalled my software the drowning noise went away.
 

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Also, if you pay close attention to Johnny noise only happens when you are doing moderate acceleration, BUT ONLY WHEN THE ENGINE IS POWERING THE WHEELS (via the clutch pack via the transmission) and charging the battery ? at the same time).

Focus on your power flow and your instrument cluster or on the main screen.
If you give the car more exhilaration when the droning is constant, forcing it out of charging and releasing the clutch needed- it goes away.
Then, try it again and if you look at the gauge on the left of the instrument cluster – try to keep your needle from getting outside of the solid blue power line- or directly in the middle or lower.
 

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I drove for several weeks with the Blue Tooth microphone disconnected. There was no noise. Today they installed a new Blue Tooth microphone. No noise so far. Fingers crossed this is finally the right fix. I will keep you posted if the noise comes back.
 
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