Just wanted to put this out there, as I didn't see anything else posted when I searched. I recently had my 2017 Model X (MCU 1, HW 2) upgraded to MCU 2 and HW 3. After getting my car back, I noticed my audio didn't sound "premium" any more (less bass, not as loud on the same volume setting, etc). I noticed my EQ settings now maxed out at 8 instead of 12. I'm coming up on 50k miles so I decided to have a mobile service appointment scheduled to check it out just in case.
Mobile service was out today and they confirmed my suspicion. After the MCU and HW upgrade, my audio was somehow set back to "Base" instead of Premium. The EQ settings didn't matter (all new cars with MCU 2 have EQ settings that max out at 8, whether its Base or Premium) but the sound in my car was in fact not as good as when I dropped it off. The mobile tech verified my concern and is escalating it to engineering for a solution.
Hope this helps someone out that may have had the same suspicion but never acted on it!
Mobile service was out today and they confirmed my suspicion. After the MCU and HW upgrade, my audio was somehow set back to "Base" instead of Premium. The EQ settings didn't matter (all new cars with MCU 2 have EQ settings that max out at 8, whether its Base or Premium) but the sound in my car was in fact not as good as when I dropped it off. The mobile tech verified my concern and is escalating it to engineering for a solution.
Hope this helps someone out that may have had the same suspicion but never acted on it!