Find a new dealer, that one doesn't know jack or doesn't want your business. Codes are stored in the modules and sent to the cloud which they can access
Having max front defrost available is a requirement. How it is implemented is not. But if it is only on the screen and the screen dies or has a widespread issue where it won't turn on due to a memory issue like Tesla had, then you have to issue a recall. By having a hard button as backup then if...
FINALLY!!! If you don't want to wait for the OTA and are having this issue there is now a TSB for your dealer to follow to fix this.
https://www.macheforum.com/site/threads/tsb-24-2094-high-voltage-battery-continues-to-charge-after-target-met.34703/
As predicted, a new TSB has been issued this morning for this. NOW your dealer will be able to fix your camera module if you had the fault and your BlueCruise doesn't work.
TSB 24-2087