How to Remove the Speed Limit on an Electric Vehicle?
3 Answers
Here are the methods to remove the speed limit on an electric vehicle: 1. Unplug the white speed-limiting wire of the controller: For older models of electric vehicles, one method is to unplug the white speed-limiting wire of the controller. The specific steps are as follows: First, open the seat of the electric vehicle, then locate the controller, find the two connected white plugs, and finally unplug them to remove the speed limit. This allows the electric vehicle to reach a maximum speed of around 50 km/h from the original 30 km/h. 2. Adjust the throttle, brake, and cruise buttons: For newer electric vehicles with cruise functionality, the speed limit can be removed by adjusting the throttle, brake, and cruise buttons. The specific steps are: Hold down the cruise button, turn the throttle to its maximum position, press the brake, turn on the power lock, wait for 5 seconds, then release the brake first, followed by the cruise button, and finally the throttle. 3. Adjust the throttle and brake: For newer electric vehicles without a cruise button, users can remove the speed limit by adjusting the throttle and brake. The specific steps are: Hold down the brake, turn the throttle to its maximum position, turn on the power lock, wait for 5 seconds, then release the brake and throttle to resolve the speed limit issue.
I've tinkered with removing speed limits on many electric bike models before, and found the most straightforward method is adjusting the controller. Most e-bikes come with standard controllers that support manual speed limit settings, like entering specific codes via the dashboard or holding buttons to access hidden menus for parameter adjustments. If there's no menu option, you might need to connect a computer to flash the software and modify ECU data, which requires an OBD tool and the corresponding program. Swapping to an adjustable-speed controller is another option, but you must match the battery voltage and motor power to avoid short-circuit risks. However, I must warn you that exceeding speed limits increases the risk of losing control, especially on curves or in wet conditions, where braking distances lengthen dangerously. It could also overheat and damage the motor or battery. Legally, e-bikes are often capped at 25 km/h, and speeding may result in fines or confiscation. So if you're determined to try, have a professional shop assess safety and legality first—don't DIY recklessly. Safety always trumps the thrill of speed.
I personally do not recommend removing the speed limit on electric bikes as it's too risky from a safety perspective. The speed limit is designed to protect you from accidents that could harm others. At excessive speeds, handling becomes poor, and a simple turn could lead to a crash. Technically, it's possible to adjust controller parameters or replace parts to increase speed, but this can cause the motor to overheat, shortening its lifespan, and the battery may degrade faster. Legally, exceeding the speed limit on an electric bike is considered illegal modification, with fines starting from thousands of yuan if caught, and the vehicle may even be confiscated. If speed is truly necessary for work, I suggest visiting a certified repair shop to install legal modification parts and ensure they are thoroughly tested before use. For daily riding, it's more worry-free to maintain a steady pace—don't risk it just to go a few kilometers faster. Riding slower also makes road conditions more manageable, giving peace of mind to family and friends.
