S9PRO Troubleshooting Guide

S9PRO

Troubleshooting- Start now

S9PRO

Troubleshooting- Start now

S9PRO Installation Guide

S9PRO Display Error Code Definitions

Error Code	Description	Troubleshooting Method
E04	Short Circuit Failure	Check for wiring short circuit or installation issues. Replace the controller if needed.
E06	Abnormal Meter Power Supply Voltage	Replace the meter.
E10	Controller/Instrument Communication Failure	Replace both the dashboard and the controller.
E11	Motor Phase A Current Sensor Failure	Replace the controller.
E12	Motor Phase B Current Sensor Failure	Replace the controller.
E13	Motor Phase C Current Sensor Failure	Replace the controller.
E15	Brake Failure	Replace the brake lever.
E16	Motor Hall Failure	Replace the motor (front wheel).
E57	Motor Temperature Control Alert	Check and reconnect the white temperature control wire between the motor and controller. If the issue persists, reflash the firmware or replace the controller.

Q1: The tail light stays on but doesn’t flash when braking

A1: If the brake handle has been reset and the error still appears after unplugging and reconnecting the wiring, replace the brake handle.

Q2: The charger shows green, but the battery is not fully charged

A2: Replace the battery.

Q3: Rear wheel brake makes noise

A3: Adjust the brake assembly. Refer to the video:

https://youtu.be/571KKX8WWKM

Q4: Rear brake failure

A4: Adjust the brake assembly. Refer to the video:

https://youtu.be/su3wNP9V8XI

Q5: The front wheel and handlebar cannot align

A5: Adjust the riser to the wheel. Refer to the video:

https://youtu.be/3O92Du6OwSU

Q6: The folding mechanism is too tight or too loose

A6: Adjust the folding lock. Clockwise to loosen, counterclockwise to tighten. For a loose stem, turn counterclockwise.

Q10: Unable to power on

A10: It is normal that the device cannot power on while charging. Try turning it on when not charging.

If the charger indicator flashes red and green alternately, replace the charger.

If the red light stays on during charging, the battery is normal and the controller should be replaced.

If the green light stays on from the beginning, the battery may be faulty and should be replaced.

Q11: Unable to connect to the app

A11: Make sure phone location services are enabled.

Ensure the app is correctly installed.

Try a different phone, as some may have compatibility issues.

If the issue persists, replace the instrument panel.

Q12: Scooter shuts off while riding

A12: If the charger shows green immediately when plugged in, test the battery and charger voltage. If not possible, replace the battery.

Q13: Unable to turn off

A13: If the headlight switch and gear position can be adjusted normally, replace the meter.

If not, replace the controller.

Q14: The headlights cannot be turned off

A14: Replace the controller.

Q15: Why is the frame not horizontal

A15: The frame is intentionally designed to be higher in the front and lower in the rear. This brings the handlebar closer to the rider and improves riding comfort and control.

Q16: The handlebar turn signal is broken

A16: This is usually caused by user damage. It does not affect normal riding. The signal light can be replaced if necessary.

Q17: The thermometer icon on the instrument is flashing or always on and affects riding

A17: The motor naturally heats up during use.

When the temperature reaches 100 degrees Celsius, the thermometer icon flashes and the controller limits current, reducing power.

At 110 degrees Celsius, the icon stays on and the scooter stops working.

After cooling, the scooter can be used again.

This is a protection mechanism to prevent motor damage from overheating. If the customer cannot accept this feature, you may discuss unplugging the white temperature control wire.

Replacement Parts

S9PRO E-Scooter

Find now

Replacement Parts

S9PRO E-Scooter

Find now

Troubleshooting & Repair Center

Step-by-step video instructions to help you repair and maintain your electric scooter.

S9PRO Maintenance & Repair

S9Pro seat installment Wiring details for S9PRO/S9MAX electric scooter of new version Replace the rear fender for the S9/S9pro/S9Max model S9PRO replace inner tube 1 S9PRO replace inner tube 2

GT2 Maintenance & Repair

GT2 guidance video to start the cruise control GT2 Brake noise adjustment video GT2 replace the rear wheel GT2 How to replace the accelerator? GT2 How to install the seat? GT2 The meter battery cannot display the guidance video GT2 How to replace the controller? GT2 How to turn on the cruise control? GT2 How to remove the speed limit？ GT2 How to adjust the barke bar？ GT2 how to adjust the pole？ GT2 How to replace controller？ GT2 How to replace barke bar and power button？ GT2 How to replace the light？

GT1 Maintenance & Repair

Unplug the white wire of the electric temperature control for GT1 model Replace the motor for the GT1 model step 1 Replace the motor for the GT1 model step 2 Replace the battery for the GT1 model Replace the control for the GT1 model

S10MAX Maintenance & Repair

Replace motor wheel for S10MAX Replace motor wheel for s10max -1 Replace motor wheel for s10max- 2

S9MAX Maintenance & Repair

S9 MAX adjusting the brakes Turn on non-zero start and release speed limit guidance video（S9 S9Pro S9Max） S9MAX Battery Change video S9MAX replace headlight Adjusting Brake Tension for S9 / S9PRO / S9MAX S9MAX unboxing video S9MAX Installation Operation S9MAX How to install the front fender Replace the charging port for S9/S9PRO/S9MAX model Install the passive wheel for the S9/S9PRO/S9MAX model-1 Remove the passive wheel for the S9/S9PRO/S9MAX model-2

U1 Maintenance & Repair

Install the basket for the U1/U3 model U1 cracking speed Replace the battery for U1 model Replace the dashboard for the U1 model

U2 Maintenance & Repair

U2 How to install the bike U2 How to install the motor U2 How to replace the inner tire U2 unboxing video U2 How to replace the dashboard U2 How to replace a chain U2 How to adjust the screw Replace the battery for U2 model

U3 Maintenance & Repair

Adjust the sprocket of the U3 model Install the basket for the U1/U3 model Replace the battery for the U3 model Replace the dashboard for the U3 model

U4 Maintenance & Repair

What you might want to know

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Buying Guide

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isinwheel Warranty

isinwheel offers lifetime technical support to all customers.

Our 24/7 customer service team is always ready to assist you with any questions about our products or services—whether your product is within the warranty period or not.

The standard warranty for electric bikes is 2 years, and for electric scooters, it's 1 year.

In addition to the standard warranty, you can also purchase extended warranty services on our website.

Please note that wearable parts may have different warranty terms. For full details, please refer to our Warranty Policy.

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