These popped up yesterday (2014) on a routine drive to get new tires. All three of ABS, ESC, RBS. The 500e seemed to drive normally. My biggest fear was that a "Service PRND" would get triggered and the 500e would no longer move.
Took the plunge of turning off the car at the tire place. It came back Ready. So, I decided to get the tires and deal with the indicators at a later time.
On the way back home, the ABS light went out. Still had ESC and RBS. Motor power was showing regen was still working.
Open to suggestions on how to proceed. I think I tested AlfaOBD at some point. Could use some help as to what to pull from it to diagnose.
Done so far:
1. Short 30 minute 12V disconnect.
2. Disconnected humidity sensor.
3. More than 10 3-minute key on/off cycles.
It drives OK. Regen is limited. Haven't tried cruise control yet.
Next step is checking on real time sensor data from AlfaOBD. Does anyone know if the free demo gives back real time wheel sensor data?