Bosch Performance CX/CX Racing/Smart System — Error Code 510
Reviewed by certified eBike technicians · Last updated July 30, 2026
Quick Answer
510 on Bosch = Motor overheating — drive unit internal temperature exceeded 85°C thermal limit
Severity: Stop — motor overheating · Do NOT continue riding
⚠️ STOP RIDING — This error indicates a critical safety issue. Continuing to ride may cause battery damage or safety hazard. Stop and diagnose before continuing.
Error 510 on your Bosch indicates: Motor overheating — drive unit internal temperature exceeded 85°C thermal limit.
Stop — motor overheating — Motor overheating — drive unit internal temperature exceeded 85°C thermal limit
Symptoms
- Error 510 on display; motor power reduced then cut completely; motor housing very hot to touch; error may clear after 20-30 min cooling
Common Causes
- Sustained high-power climbing in hot weather (>30°C)
- Motor cooling fins blocked by mud or debris
- Exceeding weight limit causing motor overload
- Riding in Turbo mode continuously for 15+ minutes
- Internal bearing drag increasing motor heat generation
Fix Steps
Step 1: 1. Stop riding immediately — let motor cool 20-30 minutes in shade
Step 2: 2. Clean motor housing cooling fins — remove mud and debris
Step 3: 3. For future rides: use Eco/Trail mode on steep hills instead of Turbo
Step 4: 4. In hot weather (>30°C): limit continuous full-power riding to 5-minute intervals
Step 5: 5. Check chain tension — over-tight chains increase motor load
Step 6: 6. If Error 510 recurs on flat ground: motor bearing may be failing — dealer diagnostic
Step 7: 7. Under warranty (2 years): Bosch will repair or replace the drive unit
Related Error Codes
Error 500
Internal drive unit error — motor controller fault detected
Error 530Battery charge level discrepancy — BMS reporting inconsistent data
Error 550Speed sensor error — magnet misaligned or sensor dirty
Error 10Speed sensor fault — rear wheel speed signal missing or erratic
Always disconnect the battery before inspecting wiring.