Electric vehicle owners often experience Xiaomi scooter making harsh or intermittent sounds, which can occur at the most inopportune moment, such as while driving or charging, causing alarm and irritation. The sound signal is not just noise, but an important tool for communicating the device with the user, reporting his condition.
These signals cannot be ignored, as they may indicate critical faults or maintenance needs. In this article, we will take a closer look at all possible causes of squeak, decipher error codes, and explain how to set up audible notifications through the Mi Home app.
Understanding the logic of your onboard system will help you avoid major breakdowns and extend the life of your Mijia or Ninebot. Let's look at the basic scenarios in which an alarm is turned on.
System notifications and error codes
Most often, a continuous or repeated squeak indicates that the controller has detected a malfunction in one of the systems. The electric scooter is equipped with sensors that constantly monitor the state of the battery, engine and speed controller.
The display usually displays the corresponding error code at this point, for example, error 10 indicates engine failure, error 15 indicates brake problems, and sound in this case is a mandatory requirement to stop the movement and conduct a diagnosis.
- 🔴 Error 01 - malfunction of the engine sensor, wiring check is required.
- 🔴 Error 02 - Controller problems, overheating or short circuiting possible.
- 🔴 Error 04 - Low battery voltage, critical discharge.
- 🔴 Error 10 – the engine is blocked or damaged.
If you see the error code and hear the squeak, you need to immediately silence the scooter and check the connections, and continuing to operate in this mode can lead to complete failure of expensive components.
⚠️ Warning: Don’t try to reset the error by simply turning off the device if the squeak is accompanied by a code.This can be dangerous, as the problem will not go away and will manifest itself again at launch.
Table of decoding of squeak frequency
Model M365: 1 long horn - start, intermittent - error. Model Pro 2: double short - lock, long - low charge.> Problems with the charger and battery One of the most common causes of sound signals is the charging process. If the indicator on the charger flashes red and the scooter makes intermittent sounds, this indicates problems with the supply of energy. The BMS (Battery Management System) system could detect unstable voltage in the network or overheating of the elements. Also, squeak can occur when trying to charge a discharged battery into a zero, and sometimes the battery runs out. ☑️ Diagnostics Charging Check the indicator on the power supply Unit View the oxidation connectors Try another socket Measure the voltage multimeter Completed: 0 / 4 It's important to monitor the battery temperature while charging, and if the device overheats, it will sound and stop charging, and it's a protective function that prevents the degradation of lithium cells. Many users are wondering why the scooter is beeping when accelerating. In models with a speed limiter (for example, in firmware for Europe) when reaching 25 You hear a characteristic squeaking up in the air, and that's a legal requirement that you can't turn off software without flashing it over, but if you start squeaking long before you reach maximum speed, you may have lost the calibration of the Hall sensor. In this case, the controller thinks that the speed is higher than real, and limits the power of the engine. Also, the sound signal can appear when the acceleration is sharp, when the current consumption exceeds the permissible limits. The system warns the user that the battery is operating in extreme mode. Mechanical malfunctions and wear of parts Do not always come from an electronic speaker. Sometimes it can be a mechanical creak or a knock that users perceive as a squeak. It is worth checking the brake system: worn-out pads often emit high-frequency sound when rubbing against the disk. Also, the source of noise can be wheel bearings. If they get water or they start to smake, they can cause a malfunction, they can cause a signal. Sound type Possible cause Removal Method High frequency whistle Brake pads Replacement or lubrication of the ends Hooding when driving Bearings Replacement of bearings Trell when turning Wireless Contacts Intermittent Squeak Electronics Diagnostics errors Regular maintenance of the chassis will help to avoid confusion between mechanical noise and system notifications. Modern models of electric transport allow you to flexibly adjust sound notifications through the Mi Home or Ninebot application. In the device menu, you can find the section "On the radio signal, you can not completely forget that the signal is not to switch off or the signal type." It is better to remove only annoying sounds, such as greetings when turned on. Accessing advanced settings sometimes requires switching the region in the app to China, which opens up access to additional features, including selecting tunes and setting volume. The influence of moisture and oxidation of contacts Xiaomi electric scooters have protection against moisture according to the standard IP54, But it doesn't mean it's completely waterproof. Water entering connectors can cause short circuits and false alarms, accompanied by squeaking. Oxidation of the Hall sensor contacts or the brake pedal can also lead to unstable operation. Moisture trapped inside the deck can cause corrosion of the controller board, which manifests itself in chaotic sound signals. ⚠️ If the scooter has been in a puddle or in heavy rain, do not charge it immediately. Let the device dry in a warm room for at least 24 hours. For prevention, it is recommended to regularly treat contacts with electronic spray and check the integrity of rubber seals. Firmware failures and software errors Sometimes the cause of strange behavior of the device is a software failure. The controller firmware can contain errors that cause false signals. This often happens after a failed update or voltage surge. In such cases, it helps to completely reset or reflash the device through a special cable and software. If you are not sure of your abilities, it is better to contact the service center, since the wrong firmware can block the controller's self-cuttering. FAQ: Frequently asked questions: Can you permanently turn off the squeak when you're speeding? Officially -- no, it's a safety requirement. However, there are third-party firmwares that remove this restriction, but they remove the warranty. Why does the scooter beep even when it's off? Most likely, the alarm mode (anti-theft) is on or the battery is in deep discharge and gives an SOS signal. What if the squeak is heard after hitting the curb? You need to check the integrity of the wiring and the condition of the motor wheel. Mechanical impact could damage the sensors or disconnect the contacts? How is the battery squeaking when the squeak is usually accompanied by a squel from the squeaking of the engine squeaking signal when the battery when the squeak?