I’ve read a couple posts about how this system can be inconsistent with the QX30’s. It’s a long story but I had a CLA 250 for 3 weeks I ended up trading for the QX30 due to some issues. The ISS on the CLA worked all the time but it has yet to activate on the QX30. I had read that the system stopped working if they auxiliary battery was dead on the CLA’s. I also have an issue that every time I start the car it gives me the data transmission permission request that is only supposed to show every 30 days. Also every time I start it the infotainment is set to off and I have to hit the day/night button for it to stay on. It never remembers this. Is this normal or could all of this be attributed to a dead auxiliary battery?