Has anyone had this problem. Every now and them, randomly, my drivers side speaker cuts out for 20 to 30 minutes then cuts back in and out. It is totally random, happens on and off, I've reset my phone but seems a car problem.
Probably related to Navigation. The voice comes through only the driver's headrest speakers. If the nav volume is down, it will seem like the speaker is cutting out just like what you describe. If you're not actually using Navigation when the speaker cuts out, there's almost certainly a malfunction related to it.