During driving, my Tesla M3 produces a 3-beep warning chime with the message "Charging Equipment Fault. Try different charging equipment". I get multiple warnings, and then they will stop for while (sometimes for 100's of miles) and start up at seemingly random times. This are bizarre warnings, occurring while I'm actually driving at highway speeds, and no charging equipment is (obviously) connected. My car was upgraded to V10 a day or two before this started. After experiencing these warning intermittently, and sometimes frequently during a 2-day, 1100 mile trip, I think I've noticed two correlations: these warnings seem to be triggered by bumpy ride (over railway tracks, highways with regular section-to-section bumps, "rumble" strips, ...) and at high speeds (> 60mph/100km/h). The car mostly charges normally either at Superchargers, or at level2 chargers, but will occasionally abort, but then charge normally after a charging restart. My hypothesis is that there's a loose connection in charging system sensor somewhere (perhaps from the charging receptacle to the on-board charger). I have a service appointment in a week, so I'll have a more definitive diagnosis after that. Anyone else experience something similar?