Electric Bike Problems and How to Solve Them

Do you frequently encounter issues with your electrical bike? Is the speed not showing up on the screen?

Or even worse, has the assistance suddenly stopped while you're riding?

At Tesway, we understand how frustrating it can be when your electric bike isn't functioning properly.

Battery issues (short life, not charging, or loss of range)

The battery is one of the most important components of your electric bike, and several issues can arise over time.

Short battery life: If your battery doesn't last as long as it used to, it could be due to aging. Over time, battery cells degrade, which naturally reduces their capacity. If your bike’s battery is still under warranty, contact the manufacturer for a replacement.

Battery not charging: Check the charging port for debris or damage. Ensure the charger is functioning by trying it with another compatible device. If the charger seems fine but the battery still won’t charge, try a different outlet. Sometimes, a reset is needed to "wake up" the battery. If that doesn’t work, the battery may need professional attention or replacement.

Reduced range: A drop in battery range is common as batteries age. However, make sure you're not riding on an excessively low power setting, and that your tires are properly inflated, as these factors can affect range. Keep the battery clean and store it in a cool, dry place when not in use to extend its lifespan.

Brakes not functioning properly

Brakes are a critical safety feature of any bike, and problems with them should be addressed immediately.

Brake pads are worn out: Check the brake pads for wear. If they appear to be worn down or are making a scraping noise, it's time to replace them. Worn pads will reduce braking power and increase stopping distances, which is dangerous, especially on steep hills.

Brake cables need adjusting: If the brake lever feels too loose or too tight, or if the brakes aren't responding properly, the brake cables may need adjusting. This is usually a simple fix that can be done with an Allen key or a screwdriver. If you're unsure, most bike shops can help with this.

Hydraulic brakes need a bleed: For bikes with hydraulic brakes, you may need to bleed the brakes if they feel spongy or ineffective. This procedure removes air bubbles from the brake lines, ensuring proper brake performance. Consult your manual or a bike technician for this task.

Motor making unusual sounds

Hearing strange noises from your electric bike motor? It could be:

Loose parts: Check the motor for any loose bolts or components. Tighten any screws you can find, particularly around the motor casing or the mounting points.

Lubrication issues: If your motor is making a grinding or scraping noise, it could be due to lack of lubrication. Refer to your manual to see if your motor needs periodic maintenance.

Motor failure: If the noise persists and is accompanied by poor performance (loss of power or jerky acceleration), there may be an issue with the motor itself. In this case, it's best to contact the manufacturer for repairs or a replacement.

Tires losing air or flats

Punctures or slow leaks are common with electric bikes, especially if you ride on rough terrain.

Check for sharp objects: Inspect your tires regularly for any embedded sharp objects, such as nails or glass, that might puncture the inner tube.

Maintain proper tire pressure: Low tire pressure can cause poor performance and increase the risk of flats. Make sure your tires are inflated to the recommended pressure indicated on the side of the tire.

Consider thicker or puncture-resistant tires: If you frequently experience flats, consider upgrading to puncture-resistant tires or adding tire liners for added protection.

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Display malfunctioning or not showing correct data

If your electric bike’s display is acting up, try these solutions:

Check the wiring connections: Loose or corroded wiring can cause issues with the display. Ensure all connections are secure and clean.

Reset the display: Some displays allow for a reset through the settings or by disconnecting the battery for a short period. Check your manual for how to reset your bike’s display.

Replace the display: If the issue persists and the display is malfunctioning beyond repair, you may need to replace it. Contact the manufacturer or visit a local dealer for a replacement.

Motor Specific Troubleshooting

Bosch Motors

Error Code 501 indicates a communication issue between the battery and motor. Try disconnecting and reconnecting the battery. If the issue persists, the battery or motor may need replacement.

Error Code 503 points to a motor temperature issue. Let the motor cool down, as overheating can trigger this error.

Shimano Motors

Error Code 21 on Shimano motors signals a motor malfunction. If this error appears, it's likely due to a problem with the motor sensor. Resetting the system may solve the issue, but if it continues, you might need a replacement motor. Error Code 24 often occurs when there’s an issue with the battery or its connection. Check the battery charge and connections.

Yamaha Motors

Error Code 22 indicates an issue with the system’s power supply. Ensure the battery is securely connected and fully charged.

Error Code 25 is a motor communication failure. It could be caused by damaged wiring or loose connections. A professional technician may be needed for repair.

Bafang Motors

Error Code 30 indicates that the motor is not properly communicating with the controller. A reset can sometimes fix this, but if the problem persists, you may need to check for faulty wiring or even replace the controller. Error Code 31 typically points to a battery issue. Verify the charge and connections, and ensure the battery isn’t over- or under-charged.

Giant Motors

Error Code 26 is a common problem that occurs when the motor temperature is too high. It can also occur if the bike’s sensor is misaligned.

Error Code 16 suggests a malfunction with the power supply or wiring. This often requires checking for loose connections or replacing the battery.

FAQs

How do I upgrade the software on my electric bike?

Software upgrades for electric bikes vary by manufacturer and model. Generally, you can upgrade the software through the manufacturer’s app or by visiting a service center. Please refer to your bike’s user manual for specific instructions.

Can I use a different brand of battery for my electric bike?

While it may be possible to use a different brand of battery, it's recommended to stick with the original brand for compatibility and safety. Always consult your bike’s manufacturer before switching batteries.

How can I increase the speed limit of my electric bike?

Increasing the speed limit of your electric bike is typically not recommended as it may be illegal in some regions and can void your warranty. If you still want to modify the speed, you should contact a professional or the bike manufacturer for advice.