F44 coding - please help

[cjn]

Hi, I’ve been using a Bluetooth obd port adapter and bimmer code. However, this only allows me to change the horrible indicator sound to a much worse sound. It just sounds awful, cheap and very loud. This sound increases dramatically when you travel at any kind of speed. This is the only car I’ve ever had where the indicator sound is unbearable. And I love this car, except for this dreadful noise. I’m desperate for some help.

I'm having a similar issue with my F40 M135iX. The apparently obvious settings are:

DKOMBI section 3001
BLINKER_VOLUME
 currently set to volume_y_kl = (hex) 80,80,A0,C0,AF
BLINKER_GESCHWINDIGKEIT
 currently set to volume_y_kl = (hex) 00,01,10,78,C8

Where you would deduce that the volume settings correspond to each speed value.
However, I have found that whatever I set there is no change in the annoying sound.
The choice of coding tool is not relevant, as the actual values set are the same.
Either the system chooses to ignore these changes, or there are other items that need to be changed.