Troubleshooting

How to fix error 03 

Error 03 refers to an accelerator fault. Please submit a service request form online and our after-sales team will be in contact with further instructions.

 

How to fix error 41

Error 41 refers to a battery over-discharging warning. Please charge your kick scooter as soon as possible if you encounter this error.

If it still does not work, please submit a service request form online. Our after-sales team will contact you with further instructions.

 

How to fix the brake disc noise on the KQi3

You may encounter some noise from the disc brakes when you begin using your kick scooter for the first time. Please check the state of the brake disc plate. If it is normal, please follow the instructions here.

If it still does not work, please submit a service request form online. Our after-sales team will contact you with further instructions.

 

 

How to fix the brakes on the Kqi2 Pro

If you noticed that the brakes on your Kqi2 Pro are not responsive and require more tension to brake, you will need to check or fix the brakes.

The Kqi2 Pro uses a drum brake and does not need adjustment. It is normal to hear a noise while braking because the drum brake uses friction to prevent the wheels from rotating. However, if the wheels make noises while rolling without the brake on, you should perform a check.

While making adjustments, refer to our diagram here. (update this link, local page and click to open a new page). If the brake is too loose, please loosen the screws (red circle in the figure) and adjust the swing arm (red arrow) to adjust the tightness of the brake line.

If it still does not work, please submit a service request form (update this link, local page and click to open a new page)online. Our after-sales team will contact you with further instructions.

 

 

What should I do if the brakes fail?

The NIU kick scooter uses both mechanical and electronic brakes. If you are experiencing issues with the brakes, please check first for issues with the mechanical brakes.

Hold the brake on one side and try to push the kick scooter forward. If the kick scooter easily moves forward, then the brakes are not properly working. You should adjust the brake cable fastening position in order to adjust the brake tension.

If, after adjusting the mechanical brakes, the brakes are still faulty, the problem is most likely caused by the electronic brakes. In that case, please contact our after-sales team service for repairs.

 

 

How to adjust Kqi2 brake tightness

If you hear a rubbing noise from the front wheel, the brake line may be too tight. 

The Kqi2 kick scooter uses a drum brake and only has a mechanical brake in the front. Adjusting the brake is easy by following the steps below:

1. Loosen the screws fixing the front brake cable.
2. Adjust the rocker arm position. The more upward the rocker arm, the tighter the brake and vise-versa.The lower the rocker arm, the looser the brake.
3. Tighten the screws for fixing the front brake line.
   
   

In addition, the electronic brake can be adjusted by adjusting the regenerative braking sensitivity through the NUI App. You may choose between three levels: strong, medium, and weak.

More detailed instructions can be found here. 

 

 

How to fix a kick scooter that will not turn on

There are instances when the kick scooter may not turn when using it the first time. This often occurs when some cables are disconnected. 

Please check the two dashboard cables to see if they are connected properly. You can refer to the diagram here.

If it still does not work, please submit a service request form. Our after-sales team will contact you with further instructions.

How to fix the red dot showing on my KQi dashboard

If you see a red dot on your kick scooter dashboard, we recommend that you send your vehicle to our service centre for maintenance.

Please submit a service request form. Our after-sales team will contact you with further instructions.

 

 

What should I do if the battery does not charge?

If the battery does not charge anymore, please check and make sure that the charging port is clean and free from obstructions. Issues with charging may also be caused by the charger itself. 

Plug the charger in but keep it disconnected from the kick scooter. Check if the charger indicator is green. If it is red or not lit at all, the charger may be damaged. In this situation Please contact our after-sales team service for repairs or replacement.

 

 

What should I do if the headlight does not work properly?

If the headlight is dim, uneven, or not working at all, please check whether there is dust or water in the light hood.

If you find dust or water inside the headlight, or you are unable to press the power button twice to turn the headlight on and off, please contact our after-sales service team for repairs.

 

 

What should I do if the handlebar stem wobbles during a ride?

If you experience instability with the stem while riding, please stop riding immediately and check the following items: 

1. Check if the folding latch has been correctly latched.
2. Check if the stem fastening screws are tight. Tighten the screws if needed.
3. Check if the fastening screws connecting the dashboard and the stem are tight. Tighten the screws if needed.

 

What should I do if the wheel motor stalls?

Stalling is most likely to be caused by a damaged controller. Please contact our after-sales service team for repairs.

 

 

The kick scooter is leaning forward when braking. What can I do?

If your kick scooter is new, the brakes will loosen and become smoother after a short period of time.

You can also adjust the regenerative braking settings in the NUI App. When set to the weak level, the electronic brake system will be smoother.

 

 

What should I do if the brake handle does not return to its normal position?

You can check if there is anything stuck in the brake handle. Remove any dirt or small particles that may be stuck there.

If the brake handle does not return to its normal position due to a mechanical defect, it will have to be replaced. Please contact our after-sales team service for repairs.

 

 

What should I do if the thumb throttle does not return to its normal position?

If the thumb throttle is not returning to its normal position, check if there is enough space between the throttle and the handle grip. If there is not, you should adjust the position of the thumb throttle or the handle grip so that there is a proper gap between them.

Also, check if the thumb throttle set screws are loose enough. If they are too tight, the thumb throttle can easily get stuck. 

If these steps still do not resolve the problem, please contact our after-sales service team for repairs.

 

 

What should I do if I hear a rattling noise during a ride?

Rattles are generally caused by loose parts, friction, or vibration. Standing next to the kick scooter, push it forward to determine where the noise is coming from. If the noise is caused by loose screws, please tighten the screws. If you cannot determine the problem, please contact our after-sales service team for repairs.

 

 

What should I do if the handlebar tube becomes loose?

Stop riding immediately. If the handlebar tube becomes loose, check if the handlebar locking cover is loose. Tighten the handlebar locking cover screws if needed. If the handlebar is still loose after tightening the locking cover, please contact our after-sales service team for repairs.

 

 

What should I do if the dashboard does not power on?

First, check if the power button has moved or if it is stuck. If so, you can try to move it back to its correct position, press and hold, then check if the display powers on.

If the dashboard remains off, please contact our after-sales service team for repairs.

 

 

What should I do if the tail light does not power on?

If the tail light does not power on, the tail light or the controller may be faulty. Please contact our after-sales service team for repairs.

 

 

What is the correct way to use the folding function of the folding stem?

To fold the kick scooter, pull the latch release switch upward. While holding the handlebar with one hand, press the safety latch all the way down. Connect the folding hook to the latch on the rear fender to secure the dashboard to the deck.

To unfold the kick scooter, press the lock release button on the rear fender and lift the stem so that the folding latch snaps (until a click is heard). Then press the folding latch upward (until a click is heard) and check that it is secured against the stem.

 

 

My kick scooter does not ride after pressing the thumb throttle down. What should I do?

If you are using the kick scooter for the first time, please make sure you have assembled and paired your NIU kick scooter to the NIU App correctly.

If you have completed the assembly and pairing process and are still not able to ride the scooter, please contact our after-sales service team for further instructions.

 

 

What should I do if the tyre wobbles from side to side, or bounces up and down during a ride?

Check if the front and rear wheel fastening screws (nuts) are loose. If they are, tighten the screws (nuts). If they are tightened and the tyre still wobbles from side to side, please contact our after-sales service team for repairs.