[Viffermike]

Update: My dealer is, indeed, doing the 1-year/10K scheduled maintenance on my car now. My car has 5,090 miles and was delivered a little more than 7 months ago; iDrive indicated that it as due for service in 2,500 miles. My SA said the car just fell into the zone when it could be done and covered by the free scheduled maintenance plan.

So, for reference for others: it appears that the typical "10 percent rule" that applies to scheduled maintenance doesn't apply to our cars. By mileage, mine's just below 33 percent, and by time it's right at 40 percent ...

Also: the "Chassis Stabilization" issue is apparently a somewhat common occurrence with non-THP 228s. It's a software glitch. Good thing I haven't coded my car yet ...