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Guest Message by DevFuse

Get you C-MAX Hybrid Registered in the official Ford Authorized Registry. More here.


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How to: Quick and easy (reversible) ANC delete

ANC Active noise cancellation

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7 replies to this topic

#1 OFFLINE   Wizzurp

Wizzurp

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  • My C-MAX's Year:2013
  • Current Vehicle:Many

Posted 03 June 2017 - 12:08 PM

Back story:

 

Ok, so I purchased my cmax with the intent on using it to move the family around in a nice quiet environment. It was all fine and dandy with just me in the car but as soon as I had a passenger it would randomly have horrible resonant frequencies that would drive me/us nuts. Well, eventually I figured out this was a known issue that plagues many of these cars, I verified it was indeed the ANC by tapping on the microphone when the annoying note was blaring in the car and it momentarily shut up. My first thought was to find the fuse for it and pull it. Sure enough there is a fuse in the trunk that is labeled ANC in the owners manual. I pulled it and it did absolutely nothing, the active noise cancellation was just as cranky as ever so I started my quest to figure out how to disable it. 

 

Anyways, I was able to access the ford online database (thank you coworker who shall not be named) and checked out the wiring diagram for all the interior body stuff and figured out where all the microphone leads should go into the big module that controls all the audio integration. Found the plug, unplugged it and went for a spin! No more horrible noise! Completely defeats it with literally no other affected areas.

 

This procedure is absolutely critical if you ever decide to add a subwoofer onto your stock system as it'll play ANC tones through it at massive volumes if you do not  :lol:

 

Onward to the actual how to:

 

Step 1:

 

Open your passenger door and put the passenger seat all the way back, you will be on the floor under the dash.

 Attached File  IMG_20170602_204041.jpg   211.54KB   2 downloads

 

Step 2:

 

Stick your head under the glove box (leave it shut) and notice there is a thin fuzzy panel that is retained by two black clips that go over yellow posts. Remove the clips and pull down on the panel so you can see behind it. You should see a fuse block, some wiring, a floor light, a floor vent, and some various other stuff. 

Attached File  IMG_20170602_204055.jpg   144.27KB   4 downloads

Attached File  IMG_20170602_204138.jpg   178.21KB   2 downloads

 

Step 3: 

 

Locate the gray 6 pin plug that I show in the image, all the primary wire colors are blue or brown as shown. If you need the supplementary wire colors for some reason just ask and I'll catalog them but it's the only plug that has this color combination in this direct area. Unclip it! If you are worried for some reason, you can wrap the end in electrical tape or something but they are heavily recessed and should never have any issues with touching anything. 

Attached File  IMG_20170602_204148.jpg   168.54KB   3 downloads

Attached File  IMG_20170602_204158.jpg   131.57KB   2 downloads

 

Step 4:

 

Put the furry panel back into place and stick the clips back over their posts to hold everything together. You know, the whole reassemble in reverse order thing.

 

Step 5: 

 

Enjoy your lack of Skrillex inspired wobwobwob! 

 

 


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#2 OFFLINE   Wizzurp

Wizzurp

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Posted 03 June 2017 - 12:12 PM

I was unsure as to what section this should go under, there isn't a section for specific how to fix stuff procedures. Mods feel free to move this wherever it needs to go! 

 

Also for reference this was done on a 2013 C-Max Hybrid SE, as far as I could tell the Energi's and all model years should be wired the same but YMMV as usual with vehicle related stuff. 



#3 OFFLINE   joshg678

joshg678

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Posted 03 June 2017 - 06:59 PM

This is fantastic! I'm pretty sure I will be doing this on my 16 and letting you know if it works.

#4 OFFLINE   Wizzurp

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Posted 03 June 2017 - 08:02 PM

Definitely let me know if it was helpful for you!

If anyone else has a request on a how to, I don't mind making them, I pulled the front bumper skin/headlights the other day to inspect some stuff and it wasn't bad. I can also do a basic amp/subwoofer install how to as our vehicles are stupidly simple with the rear battery.

#5 OFFLINE   joshg678

joshg678

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Posted 04 August 2017 - 03:03 PM

I finally made it back here to post my update!

I disconnected my connector earlier this week, took me about 30 seconds.

I've been very happy.  The annoying sounds i used to get are gone, and now i just hear the normal ICE sound that i missed.


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#6 OFFLINE   Wizzurp

Wizzurp

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Posted 09 August 2017 - 02:59 PM

I finally made it back here to post my update!

I disconnected my connector earlier this week, took me about 30 seconds.

I've been very happy.  The annoying sounds i used to get are gone, and now i just hear the normal ICE sound that i missed.

Awesommmeeeeeeee! Glad I helped at least one person haha!



#7 OFFLINE   BIG ROCCO

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Posted 09 August 2017 - 04:31 PM

Thanks for the great write up with pics - not a problem I have had (that I ever noticed) on out '13 SEL or our '15 SEL, but your documentation is great and appreciated

#8 OFFLINE   joshg678

joshg678

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  • Current Vehicle:16 C-Max Hybrid

Posted 16 August 2017 - 02:18 PM

Thanks for the great write up with pics - not a problem I have had (that I ever noticed) on out '13 SEL or our '15 SEL, but your documentation is great and appreciated

One of the annoying things i noticed is when i was on the highway with all 4 windows down, radio off, traveling at about 60MPH.  When the ice was off in EV mode, and give it enough throttle quickly to turn on ICE, i would hear this fairly loud base rumble come out of the speakers for about 1 second.








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