Most common causes
Assistance level at 0
Sounds simple, but first check if the assistance on the display is set higher than 0.
Pedal sensor or magnet ring
The pedal sensor measures whether you are pedaling. If the magnet ring is crooked, is dirty or the sensor is broken, you will get no assistance. The V8 uses a 3-pin pedal sensor, the same as the C80 and H9 (not the one from the Qmwheel V20). View pedal sensors.
Pedal sensor intermediate cable
The cable between the controller and pedal sensor is low near the pedal crank and easily gets damaged. View wiring harnesses for the Ouxi V8.
Brake sensor gives signal
A brake sensor that stays stuck switches off the assistance. Squeeze both brakes firmly a few times and release. View brakes and brake sensors for the Ouxi V8.
Controller
If not a single sensor works anymore, the controller may be defective. The V8 1.0 has its own controller. Models from 2024-2025 have a controller with a black motor plug, the V8 Pro and V8 Ultra have a new controller with a red plug. View controllers for the Ouxi V8.
What you need to know about the Ouxi V8
- The V8 1.0 has its own controller. Models from 2024-2025 have a controller with a black motor plug, the V8 Pro and V8 Ultra have a new controller with a red plug.
- The Ouxi V8 2.0 and 3.0 have the M5 display (old or new variant, limited to 25 km/h). The V8 4.0 has the HC80 display. The V8 1.0 has its own display with a short cable and the V8 Ultra has a GT20 display.
- The Ouxi V8 charges with a 1-pin charger, the same as the H9, the C80 and the old Qmwheel V20 (2022-2023).
Step-by-step plan
- Start simple: fully charge the battery, replace the battery, check all plugs at the handlebar.
- Look at the display: note any error code or take a photo.
- Send us a photo of the display, the plug or the part via WhatsApp. We will tell you which part you need.
- Do it yourself or have it done: order the part, or make an appointment in The Hague or Zoetermeer. Often your bike is ready the same day.
Never work on the electronics while the battery is in the bike, and never open a battery yourself. Lithium batteries can be dangerous if damaged.
Other malfunctions of the Ouxi V8
- Ouxi V8 does not turn on
- Ouxi V8 cuts out during riding
- Ouxi V8 display: does nothing or shows an error code
- Ouxi V8 motor makes noise or does not pull
- Ouxi V8 battery does not charge
- All malfunctions of the Ouxi V8
Frequently asked questions
Can I solve this myself?
Simple causes (charging the battery, checking plugs) certainly. For electronics and the motor we recommend the workshop, or first send a photo via WhatsApp.
How much does a repair cost?
View the fixed prices on make an appointment. If you do not know what is wrong, you choose the inspection costs (€ 30), which are waived if we do the repair.
Do you have parts for the Ouxi V8 in stock?
Yes, view all parts for the Ouxi V8.