I've had these irritating issues since I bought mine at the end of 2017. Got over 30,000 miles now. Many times when I first start the car and connect my iPhone XR (same went with my iPhone 7) the sound is off. Trying to adjust volume will show no blue bar on the dash. Switching to radio and back fixes it. When I first fire up, if I switch to Waze, it lets out a hugely loud split second of music, and then to either normal volume or the zero volume problem.
Also, when I have been driving for a while (mayne 30 minutes or so), the carplay will freeze up. Sometimes it'll take a minute and catch up, other times I have to unplug and reinsert the cable and we're back in action. My wife has a 2019 Jetta and has no trouble!
Also, when I have been driving for a while (mayne 30 minutes or so), the carplay will freeze up. Sometimes it'll take a minute and catch up, other times I have to unplug and reinsert the cable and we're back in action. My wife has a 2019 Jetta and has no trouble!