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RideFixer Android App Scan errors, compare sounds and diagnose e-bike issues on your phone.
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Shimano Error Code

W010 - Drive Unit Temperature High

Drive unit temperature is high and assist may be limited.

Medium severity Caution rideability Info urgency

What it means

Thermal protection is reducing output.

Common causes

  • Long climb
  • Heavy rider/cargo load
  • High ambient heat

Symptoms

  • Reduced assist
  • Motor feels hot
  • Warning clears after cooling

How to fix it

  • Stop and cool motor
  • Lower assist level
  • Check brake drag
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