Pedal assist not engaging
Ride-stoppingThe bike powers on but gives no help when you pedal, or assist is delayed and surging.
Typical repair cost
$60 to $250
Includes parts and labor. You get an estimate before any work starts.
Likely causes
- Cadence sensor magnet ring loose or misaligned
- Torque sensor fault or calibration drift
- Assist level set to zero
- Sensor connector unplugged
- Controller fault
How it gets fixed
- Sensor realignment or replacement
- Torque sensor recalibration
- Settings correction
- Connector repair
Try this first
Confirm assist level is set to 1 or higher. It sounds obvious, but a bumped button is a common culprit. On most hub-drive bikes, look at the small magnet ring on the crank near the pedals: if it has shifted away from its sensor or spins loosely, that is your problem and a tech can fix it quickly. Torque-sensor bikes may just need a recalibration.
Get this diagnosed at your door
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