[ASH8]

Hi all, just letting you know here have been a few CX-30's (2020) emitting a loud Static Noise through Bose Sound System.
It is related to the Bose Amp.
Mazda is aware of it, in some cases they suggest a new Amp replacement, but apparently it has been an intermittent fault in the Amp's Firmware code by Bose.
Bose are apparently working on a Firmware Update File for Dealers to run to resolve this issue. being intermittent means it could be hard to reproduce (show to your Dealer).
Apparently this firmware fix will be available in about a month, Mazda will know more then and I am sure a dealer will run the updated file even if you can't reproduce them the sound....still early days.

HERE Below in link is the small .kwi Audio update file and instructions.
It is the EXACT Same File for all the World with CX-30 and Bose Amp with noise.
Audio noise fix

 

[tagman31]

I had this happen to me, scared the hell out of me. Only way I could get it to stop was to pull the fuse under the hood for the radio. Doesn't sound like it damaged any speakers but you never know. It actually hurt my ears it was so loud.

 

[ASH8]

Yes it is quite loud....should be sorted soon, Mazda won't desert you.
Even IF you do not hear it again, report it to your Mazda Dealer, in a few months there will be a fix and IF it is just a USB Firmware update or some other serial plug in device (Dealer ONLY) the Dealer will do it, just say it happened a few times and what you did to stop it.

 

[ASH8]

For US 2020 CX-30 with this static issue there is now a Software Upgrade for the Bose Amp available from US Mazda Dealers.

 

[Hawke]

The software upgrade file, to fix this issue, along with instructions has been uploaded to the german CX-30 forum:

Firmware Thread CX30 - Mazda CX-30 Forum

Might only apply to EU, don't know if region matters with this update.

 

[Thomas D]

The software upgrade file, to fix this issue, along with instructions has been uploaded to the german CX-30 forum:

Firmware Thread CX30 - Mazda CX-30 Forum

Might only apply to EU, don't know if region matters with this update.

Shame I can't work out what any of it means!

 

[Ronnie]

Because Google Translate or any other translate program/website and cut and paste doesn't work for you Thomas? The German PDF with instructions is in the next post there and screenshot are already in English. Takes less time than going to your dealer I guess.

 

[Thomas D]

Because Google Translate or any other translate program/website and cut and paste doesn't work for you Thomas? The German PDF with instructions is in the next post there and screenshot are already in English. Takes less time than going to your dealer I guess.

And in less time which it probably took you to write that reply Ronnie

 

[Ronnie]

 

[Yar]

Hi all, just letting you know here have been a few CX-30's (2020) emitting a loud Static Noise through Bose Sound System.
It is related to the Bose Amp.
Mazda is aware of it, in some cases they suggest a new Amp replacement, but apparently it has been an intermittent fault in the Amp's Firmware code by Bose.
Bose are apparently working on a Firmware Update File for Dealers to run to resolve this issue. being intermittent means it could be hard to reproduce (show to your Dealer).
Apparently this firmware fix will be available in about a month, Mazda will know more then and I am sure a dealer will run the updated file even if you can't reproduce them the sound....still early days.

 

[Yar]

I have same issue. The dealership did fix etc. still didn’t fix it. After over a week of them trying to figure out it seems it’s the center control knob that is causing the noise. still waiting for part to come in to see if this truly fixes it.

 

[ASH8]

Exact same file for all of world.
BTW, the Dealer or YOU must do a FACTORY RESET of your CMU or Mazda Connect.

 

[Yar]

They finally fixed this by having to replace the CMU and the tuning button. Factory reset, updates did not. So far so good.

 

[ASH8]

Replaced CMU and Commander Knob Really?, Sorry but to me the dealer just threw new parts to try and fix it.
The Bose Amp Software update is still active to this day on Mazda site in EU and US.
The fix was from Bose for the Bose Amp which is separate to CMU... yes CMU is the main Hardware centre for all the control of info.
But thanks good yours is OK now.