hello all,

this is my first post, and thank you in advance for all of the advice.

i have a 2013 mazda cx-5 sport turning, bose system w/o gps.

here is the situation, i turn the radio off. the volume set at 15 for example, power off the car. i power the car on and power on the radio. the volume will go from 15 to 0. this will happen every time, i repeat the process outlined above. but if, i power off the car with out powering off the radio the volume will stay at 15 when the car is powered back on.

i noticed that my volume up and down and station up and down stopped working so i replace the control with a new one from the dealer. that didn't resolve the issue so i replace the wiring harness inside the steering wheel that connects the radio/phone and curse control. still didn't work.

i thought the radio was going out so i replace the radio with a aftermarket one. i got the same symptoms on the aftermarket radio. i could set the volume to 15 but it would go back down to 0 every time.

i hope the fix is simple, and thanks everyone for taking the time to read my post.

 

I personally don't see a problem with the radio automatically turning itself down after the car is shut down. I wish mine would do that. I hate it when I forget to turn the music down when I turn the car off only to get blasted when the car is started back up.

As for your other symptoms, It doesn't make any sense to me. You replaced the steering wheel infotainment controls, the steering wheel wiring harness, and then the head unit and it still does the same thing?

 

conrad,

thanks for the reply. yeah, it does not make an any sense to me either. i was thinking of brining it to the dealer or to an audio shop, for a diagnosis, which would your recommend?

 

If I were you I'd take it to an independent audio shop.

 

If you find out what makes that happen, I'd like to mod mine to make that happen. I would like mine to be zero volume when I start it.