I got that message once the first two weeks I owned my HSE and never saw it again. I wouldn't worry if until you see the same message a few more times. I would also think any drain is minimal.....keep in mind, if your ride gets stolen, some insurance companies will get ugly if you leave the keys in the vehicle :twisted:
OH and enjoy, I am envious of your supercharger :mrgreen:
OH and enjoy, I am envious of your supercharger :mrgreen: