"Warning Malfunction" and "Chassis Control System Error" are pretty vague. The fact that they're happening consistently during your daily commutes points to a potential software or sensor issue. Since it's a new car, I'd strongly recommend taking it straight back to the Nissan dealership. Document the frequency and specific error messages, and don't let them brush it off as a one-time thing. These kinds of errors could indicate a serious problem, and you want to get it sorted out while it's still under warranty. Don't risk it.