Shimano STePS E8000/E7000/E6100 — Error Code W013
Reviewed by certified eBike technicians · Last updated July 21, 2026
Quick Answer
W013 on Shimano = Walk assist error — walk assist mode not functioning or speed signal abnormal during walk mode
Severity: Check soon — walk assist unavailable · Limited riding OK, diagnose soon
Error W013 on your Shimano indicates: Walk assist error — walk assist mode not functioning or speed signal abnormal during walk mode.
Check soon — walk assist unavailable — Walk assist error — walk assist mode not functioning or speed signal abnormal during walk mode
Symptoms
- W013 on display; walk assist button does not engage motor; walk mode may start then cut out after 2-3 seconds; motor works normally when riding
Common Causes
- Walk assist button on display unit stuck or not making contact
- Walk assist button wire damaged at handlebar exit point
- Speed sensor reading incorrect during walk mode — walk assist requires 0-6 km/h signal
- Walk assist mode disabled by firmware configuration for regional compliance
- Display firmware bug causing walk assist malfunction after update
Fix Steps
Step 1: 1. Press and hold the walk assist button for 3 seconds — it should engage motor at 6 km/h
Step 2: 2. If no response: check walk assist button for physical sticking or damage
Step 3: 3. Inspect walk assist button wire from display to motor controller for cuts
Step 4: 4. Spin rear wheel by hand and check speed reading — if 0 km/h, speed sensor issue prevents walk mode
Step 5: 5. In service mode (E-TUBE PROJECT app): verify walk assist is enabled in firmware settings
Step 6: 6. Some regions disable walk assist above 6 km/h by law — confirm bike is in compliant mode
Step 7: 7. If button and sensor test OK: display unit may need firmware update via E-TUBE PROJECT
Step 8: 8. Replacement walk assist button assembly: ~$15-25 from Shimano dealer
Related Error Codes
Always disconnect the battery before inspecting wiring.