Honda CR-V Bluetooth Buzzing Sounds

by Michael on October 29, 2012 · 51 comments

Over the past week, I’ve had three people tell me that they’re hearing a horrendous buzzing sound when I talk to the over the Bluetooth connection on my 2012 Honda CR-V. This after six months of flawless performance. Perplexed, I investigated.

Sure enough, even though the sound is crystal clear on my end, there’s a horrible buzzing sound on the other end. It’s almost like someone is running a band saw in the background, making it very difficult for them to converse.

I’ve checked for possible sources of electrical interference (e.g., from my after-market Garmin GPS unit) but I haven’t been able to find an explanation. Since we also have a 2012 Honda Odyssey with a Bluetooth connection, I’ve been able to rule out my phone as the source of the problem — it really is unique to the CR-V.

Update: I’m please to report that the buzzing problem has been solved. They (finally) replaced the microphone and that took care of it.

For the record, this is with an iPhone 4S (same deal with my wife’s iPhone in my car), though I’ve now read about people having similar problems with Android phones so it doesn’t seem to be specific to a certain model of phone.

After a bit of Googling the most likely culprit appears to be the Bluetooth microphone. I’ll have to take it in to be diagnose to be 100% sure but until they can show me that something else is to blame, that’s my working hypothesis.

If you’ve been having problems with a noisy Bluetooth connection, please share details in the comments section, below.

{ 51 comments… read them below or add one }

Jim Medlock November 30, 2012 at 10:47 pm

Wife purchased new 2012 Honda CRV with BlueTooth hands free phone. Her iPhone4 connects rather well, goofing up only occasionally but has terrible audio from car to called party. Remarkably degraded audio when phone connected, then as highway speed increases, audio gets worse, hissing, buzzing, severe distortion of words spoken, basically unreadable to other party. Have taken back to Honda dealer several times and continually get report that “can’t find or duplicate problem” which is a diversionary and definitive lie. I can duplicate problem every time. Changing phones does not alter problem. Problem is directly related to the vehicle BlueTooth and vehicle velocity, hence I focus on the car audio system, either the hands free mic noise cancelling is defective as it is computer altered proportional to vehicle speed, or the hands free mic pickup is interfered with by the cockpit noise cancelling feature (active noise cancelling by using car radio speakers). Honda has apparently reached the point where the customer doesn’t matter once the purchase has been made. The cars were great and durable, now the dealers are nothing more than Flim-Flam artists. Does anyone know a direct route to USA Honda headquarters, head of USA service or customer support? This seems to be the only way to get a resolution of this problem.


Anil December 5, 2012 at 8:14 am

Many others are having issue including me:

Hoping for a solution


Karen January 14, 2013 at 6:23 pm

Been having this trouble for months. Crystal clear in the car on my end but described as sounding like I am in a bee hive by the people I talk to and a squeeling noise. This issue is not in any car review done on the CRV which I find interesting. Next stop Honda.


Meeghan January 22, 2013 at 9:40 pm

I’m having the exact same thing! I’ve been planning to stop into my Honda dealer and will now be sure to show them these comments! Thank you all for sharing. I’ll be back if I find a solution.


RON February 17, 2013 at 1:57 pm

I have the same issue….its not the phones…..try it with the engine off…..poof no buzzing sound…..I tried it with 2 different cell phones….engine on buzzing…engine off no buzzing…..clearly a HONDA issue.


Tom February 21, 2013 at 11:37 am

I un-paired my phone from the HFL because it’s useless. Money for nothing.
Everyone I have attempted to talk with using HFL complains that they hear nothing but noise and it’s impossible to carry on a conversation.
I would have saved a lot of money buying a base Ridgeline and purchasing a Jawbone or Bose earpiece.
For a company that prides themselves on quality this is unacceptable. My Ford 150’s with SYNC make this seem like a talking through 2 tin cans with a string.


M Thalken April 21, 2013 at 4:06 pm

Having the same buzzing sound with our bluetooth on our 2012 CRV.


Bill October 25, 2013 at 12:04 pm

Same problem, if you rub your thumb a few times across the microphone on the roof it will stop the squeal and the other person will now be able to hear you. It sends a feed back through the mic and it kills the squeal.


bobK December 24, 2016 at 9:50 am

Thanks, Bill. 3 years plus later, and you solved my problem! This fix works for me too — at least for now.


Tara September 9, 2017 at 4:25 pm

Where is the microphone in my honda crv


Harry July 8, 2018 at 11:12 pm

Bill, I’ll experiment with you suggestion tomorrow. I didn’t use to have this problem, but honestly I didn’t use the Bluetooth often. Now GA has a new law — a driver can’t even tough his/her phone so Bluetooth is necessary. I hope this is a permanent fix!


Michael October 26, 2013 at 10:38 am

Bill: You should be able to get it replaced under warranty. Bring it in and have them take a look.


Maggy December 11, 2013 at 10:00 pm

I was having this same problem. I took my car to Honda, they couldn’t duplicate it, naturally. They thought it was my phone (iPhone 4). Then I would call the honda dealership every time it did it. Finally they told me to come in again, I did and spent 5 hours (!!!) at the dealership for them to tell me that they didn’t know what to do. Finally I fought so much that they replaced the Bluetooth device. I upgraded to the 5s in hopes that, that was the problem. For a few months everything was fine, all of the sudden it started doing it again! Granted the people at the honda dealership were super nice, but it’s annoying that I can’t use my Bluetooth! What’s the point?!?


Judy April 4, 2014 at 7:24 pm

I started having this problem shortly after having an after market car starter installed. I took my CRV back to the car starter installer 3 times they couldn’t find the problem and said it was not the car starter. I have a 2013 Honda CRV and I was hesitating taking back to dealer because I thought for sure it was the car starter but after reading other postings I think I should have the dealer look at this problem.


tom April 18, 2014 at 3:44 pm

2012 CRV bluetooth buzzing sound on recieving end ..have your dearler look at honda technical bulliten 12-070 for update on software in car took care of my problem ..I have I4


Francisco Munoz May 9, 2014 at 1:46 pm

I have the same problem, the worst thing is that I exported my car to Costa Rica and am not covered with any kind of warranty. I ran a diagnostic in my car and called the dealer in Daytona, by doing my own research, entered to the diagnostics mode in my car navy, and ran couple tests and almost 50% of the time I was getting a Hardware error “2707 mic diag” and also in the screen the mic component shows as red telling that is erroring out, also when running a mic test without the phone attached to the car and a complete silence in the car interior, the mic noise saturates himself, some other tests I ran it was working fine… so then called the dealer in Daytona and they say they know the issue and that they have exchanged several microphones and that solved the problem…. another workaround I used was doing several little punches to the mic while was showing the error and it worked fine and also covered the mic for 30 seconds and this seems to fix the problem for a while (I think this is because the mic get saturated with feedback noise)… anyway hope it works for you guys in case you are still having the issue… the replacement part seems to be 39182-SMA-003 and I have several pictures of the process I followed and if you need assistance I can show you how to run the diagnostics on your own.


steve May 26, 2014 at 6:45 pm

I work at Verizon and just had a customer come in with the same issue and Honda had directed her here. Armed with this thread she’s on her way back to the dealership


ken August 5, 2014 at 7:08 pm

I have a Honda CRV 2010 and having problem with the Bluetooth. Background noise on the receiving end and I get complaints all the time. I told the dealer and I was asked to change the cell phone. I kept on changing the phone and now have 4G but the problem is not solved. Honda Corporate Customer service tells me that they have not tested my model and so can not vouch for good connection. I have an extended warranty but have detectable. Neither dealers or Honda are of any help.
I too have problem with my navigation
I am at wits end. Any help?


Francisco Munoz August 5, 2014 at 7:44 pm

I had the same problem with my car (please read my comment on may 9th). I bought the spare part for my 2012 crv and solved the problem myself, it took almost 3 hours to do the replacement, I have about a month with the new mic and the problem seems to be solved, the dealer in Daytona told me that they thought this was the fix I needed and now I can confirm it. Tell your dealer to replace your mic and show him the comments on this forum, as far as I understand the dealer in Daytona have already replaced several units solving the problem, in my case I was not able to claim warranty since I exported my car to Costa RIca and the warranty does not apply down here, but still is just about $90 for the part.


Francisco Munoz August 5, 2014 at 7:47 pm

Forgot to mention, this have nothing to be with your cell phone, I ran the diagnostics on my car navigation system and it clearly showed how the microphone was throwing errors, and also in the sound test it was getting saturated…. one thing I tried as part of my troubleshooting was punching the mic carefully and sometimes the issue went away… and also… it happens with multiple cell phones… so doesn’t make sense that all cell phones are broken!


David August 21, 2014 at 1:08 pm

Turn off your WiFi on the phone. That should fix it.


Leanne August 21, 2014 at 1:25 pm

Thanks for the post and follow-up resolution. I just bought a pre-owned Acura TSX sportwagon last week and tried out the Bluetooth/Handsfree feature last night. My caller said the buzzing was terrible. Since he was in the house and I was in the driveway, he walked out to let me listen. At that point I decided it wasn’t going to be worth it to use the feature. But, if it’s just a microphone replacement (and I still have 31,000 miles remaining bumper-to-bumper warranty) I think I’ll take her into the shop! Thanks again for the post!


Judy August 23, 2014 at 4:34 pm

Had my remote car starter antenna moved away from center as suggested by Honda Dealer – still had problem. Took 2013 CRV back to dealer called him at his service desk and he finally concluded to change out microphone. Since then knock on wood all is good!!


flip November 11, 2014 at 6:42 pm

Concerning a new 2014 Honda crv ex-l. Having a feedback noise coming through the speakers when the ignition is turned to aux position, sounds like old morris code clicking in and out and does it even if the radio is on. Can last up 20 to 30 seconds, seems to be linked to a certin position on the iginition as i can wigle the key while in the aux position and the frequency will change. I have ruled out the the phones , they were turned off. Will try muting the mic or try a recording at the mic to see if it is the pick up on the mic or feed back.
Anyone else having these issues ?


Cam November 18, 2014 at 8:45 pm

Hi all – was having the same issue with my used 2013 CR-V Ex that I just picked up last week. Call RECIPIENTS complained of a loud buzzing/screeching sound that made the call virtually inaudible for them (or at the very least, totally annoying). For me, in the car, everything sounded just fine. I immediately avoided the question of it being the phone since its been working fine with all other bluetooth devices and vehicles I’ve tried it on.

After reading all the above posts that narrowed this to a microphone issue, I carefully removed the microphone/sunroof switch module with a flat bladed screwdriver. Inserting the screwdriver in the front edge/seam/crack (the edge closest to you, not the windshield side) you can pry it down and pop it out of the space it occupies between the two map lights – gently pop off the two switches first (light and sunroof). I simply unplugged the two wiring harnesses – one leading to the switches and one to the microphone (the mic one was green I believe, the other was black). Once unattached, I noticed a small amount of moisture in the housing of the entire unit (maybe from the dealer detailing the car to prep it for sale?). Once the black, inner “block” has been pried loose of the outer plastic housing, you can gently split open the inner black block using a couple of small screwdrivers being careful not to break any of the retaining tabs. Once that’s split open, the microphone module can be easily pulled out. ALL I DID WAS: pulled out the mic module, dried the (small) amount of moisture out of it, blew it out with some air, made sure the wires at the connector were separated and well connected to the fittings inside the connector, and reconnected the mic carefully and firmly. I’ve only had it back in place for a couple of days, but it’s been working just fine since then. Took about a half hour to get it open and put back (most of that time was taken up by being careful to break any tabs or plastic bits)

My guess is that there was simply a poor connection happening, perhaps made worse with a bit of moisture, but these type of problems/fixes happen more often with electronic connectors that you may think. Sometimes taking them apart, cleaning them up, and reconnecting everything carefully can clear up a problem like this.

Even if this does NOT fix your honda bluetooth issue, and even if the noise returns on mine, it seems clear that the microphone is the easiest place to start the diagnosis. Again, for when the call recipient is hearing awful noises when you call, but all sounds well to you in the car. If it happens again to me, I’ll take it to the dealer to get them to replace it. If they won’t, I’ll just pull it apart again and replace the mic with components pilfered from another bluetooth unit or headset microphone to see if that clears it up – looks like others have had success with this.

Just hoping that I if someone else with this issue starts by focusing on the microphone as the culprit, they may avoid 5 trips to the dealer and hours on the phone with Apple or Android tech support. Good luck!

p.s. turning off WiFi had no effect on the problem I was having, nor did moving the phone around the cabin of the vehicle, turning climate control up or down etc…


Michael January 4, 2015 at 2:23 am

So does anyone have a part number of the replacement microphone? My wife just bought a used CRV and it’s got some bluetooth issues something fierce…horrid feedback jet noise sounds…and she’s pissed. Would love to be able to fix this without dealer involvement (out of warranty of course)



Cam January 4, 2015 at 10:28 am

The part number is listed earlier in this thread in one of Francisco’s posts. If you’re handy, I would try pulling it apart, cleaning it, drying it out, reconnecting it securely etc – I had the same symptoms and that’s all I had to do to fix it. Just bot the CRV used early November and it has been working fine since I did this. My guess is mine had a flaky connection and/or a bit of cleaning fluid in it from when the car was detailed prior to being sold.
Good luck – drove me crazy too! Here’s the part num listed above -39182-SMA-003 – worth confirming if its the exact for your car, but will get the hunt started.


Michael January 6, 2015 at 7:34 pm


For some reason when I read the thread several times earlier I must have completely missed the part number…..Sorry Francisco! 🙂

I have the p/n written down and the car is going in for service tonight…will let them know this is what I’d like replaced.

Thanks 🙂


Francisco January 6, 2015 at 7:38 pm

No problem Michael, hope it works for you, in my case I exchanged this part like 6 months ago “dont recall exactly, may be more” and the problems are totally gone!!! so am really happy with this now.


Anthony February 6, 2015 at 4:38 pm

I have had this issue as well and was able to pull out the bluetooth module and clean it off and dry it out with a hair dryer. Seems like there is some liquid or water that is on the mic and switches. I put everything back in and made a phone call to someone who has heard the issue recently and they said it sounded perfect.


hibbert March 1, 2015 at 11:46 pm

same noisy problem from the bluetooth my other party can hear it but i cannot .


Carol Watts April 6, 2015 at 3:26 pm

I have been having the same buzzing sound for more than a month. I could not figure it out? Does this need to be serviced to get this inconvenience fixed?


Cam April 6, 2015 at 4:00 pm

Take a look at the comments from Anthony and myself above. With a screwdriver, care and patience, we were able to take out the Mic unit, clean and dry it out and put it back in place. Once we did that the problem went away. Took about a half hour, but it was free. Mine has been fine ever since. Worst case is replacing the Mic unit – others here appear to have done that successfully, it’s just more expensive than our fix. If taking it out, drying and cleaning doesn’t work, try replacing it. It seems that, at least for some of us, a bit of water or cleaner has gotten in and caused the trouble. Good luck!


bruce April 13, 2015 at 4:52 pm

Based on this thread i replaced microphone after ordering online and it cost about $108 with shipping. Took about a half hour. You get the unit out by removing the two light covers which snap out for access to bulbs. Remove two screws there then take out the two screws in the back which you see when the sunglass holder is open. Carefully slide unit forward and down to get out. Now find 4 snap tabs and carefully get the unit out of the frame. Turn the unit and remove frame. You sould be able to unplug two connectors and take the unit out to a well lite location. The contol unit with buttons can be removed further by locating and prying tabs. To get the mic out, carefully pry the black plastic cover off the back – there are various tabs so be careful. I used a spunger tool. Once off, the mic comes out with one small phillips screw. Assemble with new mic following steps in reverse. It works now!


Vidhyasankar DN April 15, 2015 at 9:02 am

Gosh I am glad I found this thread. Mine is a 2013 CR-V, i use an ios phone and this problem has been so irritating. The problem is persisting for more than 6 months now(Apr 2015), I’m going to the dealer this weekend and I will show them this thread !!

Thanks to all who provided valuable debug & fixing instructions, you guys are fantastic!


hgnara7 June 17, 2015 at 3:07 pm

Hello- I have a 2013 CR-V and experienced the same issue with my Bluetooth. I was turned away twice by the honda dealership saying that they could not replicate the noise. When it happened again, I recorded the noise by calling my work voicemail and played it back for the dealer. They told me that they will go ahead and replace the Bluetooth mic because it is a known issue and that there was a bulletin that was issued to the dealers. I just got my new mic and it appears to be fine now. Mine was covered by warranty.


Don Ryan May 10, 2016 at 12:27 pm

Had the same problem with Bluetooth on 2012 Honda CRV buzzing sound. Thanks Bill for the solution of cleaning off the microphone. It solved our problem as well. Honda wanted to put on a new microphone and charge us!


George May 11, 2016 at 6:13 pm

2013 Honda CRV Bluetooth issues. Same problem with noise on other end not in the car. Replaced microphone and all is good. Both phones were the IPhone 6


Patsy August 22, 2016 at 10:56 am

I have a 2012 CRV….I got it new but I have the same problem … I don’t know what to do about….Its a useless ….


Lenny December 26, 2016 at 11:11 pm

I have read a lot of comments about this problem and I told my wife that it is nothing to do with her phone. And you know what? She pushed hard with her finger on that place where the microphone is hidden and that noise stopped. Just like that. We had this problem on her 2013 CRV for more than a year. I wish all of you guys you have n easy solution like this.


Glenn Dias March 6, 2017 at 8:29 pm

For years now I have been reporting this problem to my Honda dealer here in Australia (SA) but they have not been able to replicate the problem. The screeching sound happens on some calls and not on others. It is impossible for the people I call to hear me when this happens but their voice is clear at my end. My suggestion is go to the dealer as soon as you experience the problem so that it can be fixed under warranty and don’t let them fob you off.


Mikee July 4, 2017 at 4:08 pm

I have had this blue tooth issue – clear on my end horrible on the other end for at least two years. Sometimes there sometimes it. Dealer told me I must have spilt something into the system. Ha. Thanks for this informative post. Clearly comfort in knowing not the only one. Now if I can figure out why my Navigation system memory quit. And what to do about it.


Erick August 3, 2017 at 4:54 pm

I figured this out really easy just knock on the the mic above the rear view mirror fixed the problem in sec


Barry August 16, 2017 at 5:28 pm

Hi all same as above just bought a 2013 C R V and the calls have a buzzing noise , going to dealership I bought extended warranty.


Bany September 12, 2017 at 5:47 pm

I have the same buzzing and terrible big noise with the the Bluetooth on my CRV 2012. I thought it was my iPhone 7 but I also tried with Samsung phones and it didn’t get fixed. Definitely, it’s a Honda Bluetooth issue that needs to be fixed.


Shawn December 16, 2017 at 3:37 pm

My 2012 CR-V has exactly same problem including buzzing and terrible big noise background at the receiving end. It is awful. I already replaced Bluetooth for me one time. Now it is still the same. Dealer asked for more than $200 to replace the microphone unit. Really not happy with this.


Goldentoe January 24, 2018 at 6:34 pm

Easy solution, Your SVC (microphone) control is set on HIGH so just turn it down to the middle setting and you will be fine. It is picking up too much engine noise thus causing this Bluetooth issue.


Cactus Rose February 6, 2018 at 1:20 pm

How do you turn the SVC control down?


HaiTech May 14, 2018 at 8:53 am

I would also like to know this. While it is possible to change the volume of the car audio using the dedicated volume controls, I don’t see any way to change the levels for mic gain.


Judy April 18, 2018 at 12:17 pm

I bought a used 2013 Honda CR-V and I am used to using Bluetooth when talking on my phone. No one can hear me or complain about the annoying sound on their end. I don’t know how much it costs to fix but from what I see on different sites it’s the microphone. What do you suggest?


Francine B Baroutsos October 14, 2018 at 6:46 pm

It’s not only the CRVs. My 20012 civic SI does exactly the same thing. Buzzing on the other end. Drives me crazy. Nobody can hear me. Seems like this should be a recall


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