500 - Drive Unit Error
The motor/drive unit has detected a serious operating fault.
High severity
Stop rideability
Immediate urgency
What it means
The drive unit cannot safely provide support.
Common causes
- Motor controller fault
- Overheating
- Firmware or sensor issue
Symptoms
- No assist
- Error at startup
- Assist stops under load
How to fix it
- Restart system
- Check for overheating
- Inspect connectors
- Dealer diagnostic required