Bosch Performance Line/CX/Active Line — Error Code 500
Reviewed by certified eBike technicians · Last updated July 30, 2026
Quick Answer
500 on Bosch = Internal drive unit error — motor controller fault detected
Severity: Stop — dealer required · 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 500 on your Bosch indicates: Internal drive unit error — motor controller fault detected.
Stop — dealer required — Internal drive unit error — motor controller fault detected
Symptoms
- Error 500 on Intuvia/Kiox display; motor completely dead; walk mode also dead
Common Causes
- Internal motor controller fault
- Firmware corruption (rare, but can happen after failed update)
- Motor overheated and triggered permanent lockout
- Water ingress into motor housing
Fix Steps
Step 1: 1. Remove battery and wait 10 minutes for full discharge — then reconnect and retry
Step 2: 2. Check for any recent water exposure — Bosch motors are rated IP54 but not submersible
Step 3: 3. If error 500 persists after battery disconnect, the motor needs a dealer diagnostic
Step 4: 4. Bosch motors require proprietary diagnostic tools — you cannot fix error 500 at home
Step 5: 5. Take to a Bosch-certified dealer — repair cost typically $150-400 if out of warranty
Step 6: 6. If under warranty (2 years from purchase), Bosch will replace the motor free of charge
Related Error Codes
Error 530
Battery 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
Error 11Motor lock detected — drive unit mechanically blocked or rotor stalled
Always disconnect the battery before inspecting wiring.