Assist does not work/Assist power decreases/Assist is unstable

What is the situation?

An error/warning code is displayed on the cycle computer or E-TUBE RIDE.

Check the displayed error/warning code and follow the instructions shown.

[Enter the code]

Select E (error) or W (warning), then enter the code number to search.

Assist does not work.

Is the battery level low?: Assist does not work when the battery level is low even if the light is ON.
Charge the battery.

If none of the above cases apply: The drive unit, cycle computer, or assist switch may not be connected properly or may be broken. Contact your place of purchase or a distributor.

Sometimes I feel the assist power is weak.

The assist power is reduced when the gear is shifted using electric internal gear shifting.: This is not a malfunction. Electric internal gear shifting adjusts the assist power when the gear is shifted, ensuring that the gear is shifted correctly.

The torque sensor is adjusted when the bike is turned ON. When heavy load is applied to the pedal, the correct adjustment power cannot be obtained, causing the assist power to be limited.: Turn the power OFF, then ON without depressing the pedal. The torque sensor is readjusted, enabling the correct assist control.

The assist power is reduced as the riding speed increases.: The assist power is regulated in accordance with the maximum assisted speed specified by laws and regulations in the area where the bike is used.

The assist power is reduced when the pedal is depressed gently.: The assist power output is controlled to achieve more natural output feeling according to the level of force on the pedal.
When the level of force on the pedal is low, the assist power may be output intermittently depending on the situation.
The power output characteristics can be changed by changing the assist mode. Also, assist does not start until the pedal is depressed.

The assist power is reduced as the cadence increases.: The maximum assisted cadence is set to 120 rpm. Assist does not work when this value is exceeded.

The assist gauge does not reach the maximum assist output when I increase my cadence.: The assist gauge indicates the output torque of the motor in the drive unit; therefore, if you increase your cadence and the maximum output is exceeded, a restriction may be applied to keep the assist gauge from reaching the maximum. The assist gauge reaches the maximum when you decrease your cadence.

The maximum assist power output cannot be achieved after riding for a long period time.: The maximum power output is automatically limited if the motor overheats due to continuous high power output, such as when driving on a long uphill slope in summer or when riding for long periods of time with heavy baggage loaded on the bike. Lower the level of the assist mode setting or wait for the motor to cool down. If the power output is still limited, contact your place of purchase.

Assist turns OFF on an intermittent basis.

If you are using SC-E6100: Check for contamination around the contact terminal of the bracket.

If no contamination is found, contact your place of purchase or a distributor.