What is the situation with the low-speed abnormal noise in BAIC New Energy vehicles?

[CarsonFitz]

BAIC New Energy low-speed abnormal noise may be caused by reducer issues, and upgrading the reducer noise software is required to resolve the problem. Below is relevant information about new energy vehicles: 1. Introduction: New energy vehicles refer to automobiles that use unconventional vehicle fuels as power sources (or use conventional vehicle fuels with new onboard power devices), integrating advanced technologies in vehicle power control and driving, resulting in advanced technical principles and featuring new technologies and structures. 2. Categories: New energy vehicles include four major types: hybrid electric vehicles (HEV), battery electric vehicles (BEV, including solar-powered vehicles), fuel cell electric vehicles (FCEV), and other new energy vehicles (such as those using supercapacitors, flywheels, and other high-efficiency energy storage devices). 3. Significance: Promoting new energy vehicles is aimed at addressing environmental protection and oil crisis needs, reducing or abandoning the current mainstream models that burn traditional gasoline or diesel to drive internal combustion engines.

[BennettRose]

I've got experience with the low-speed squeaking issue in BAIC New Energy vehicles. Last time, after parking for three rainy days without moving the car, I noticed a sharp metal grinding noise from the wheels as soon as I started driving. A friend said it's likely the brake discs rusted—new energy vehicles have strong regenerative braking, so the brakes are used less and more prone to rust. The next day, I took it to the repair shop, and after disassembling, they found rust spots between the brake pads and discs. The mechanic fixed it by sanding them down. Now I know: try not to park outdoors in wet weather, or lightly tap the brakes a few times before driving to remove rust. By the way, the rear wheel handbrake can also cause similar noises if left engaged too long—just release it gently.

[SanJulia]

The neighbor's sister's BAIC EC180 kept making a clunking sound at low speeds, so I accompanied her to get it checked and found that the underbody guard was loose. With the heavy battery pack of new energy vehicles, the plastic clips securing the guard can easily break after prolonged bumps, especially when going over speed bumps—it sounds like drumming. When we crawled under the car, sure enough, two middle clips were cracked. The mechanic temporarily reinforced them with nylon zip ties. Later, when replacing it with an aluminum guard, the technician reminded us to regularly check the screws on the battery guard. He mentioned a previous case where a fellow driver's guard completely fell off and snagged on some wires, costing nearly 10,000 yuan to repair the battery. Now, the sister has developed a habit of kicking the guard and listening for sounds before getting in the car.

[OMadison]

The other day at the 4S shop, I saw an EU5 owner complaining about constant clicking noises during low-speed turns. The veteran mechanic immediately lifted the car to inspect the axle, and sure enough, the outer CV joint boot had a split seam, causing all the lubricant to leak out and resulting in dry friction. This situation is particularly noticeable when the steering wheel is turned to full lock, sounding like a joint dislocation. With EVs' high torque output, CV joints wear faster than in ICE vehicles. The owner recalled hitting a deep pothole last month which might have damaged it. Replacing the entire CV joint assembly cost 800 yuan—way cheaper than burning out the whole drive motor. If you hear rhythmic clicking noises, promptly check the drivetrain system.

[GiaDella]

My buddy's EX360 had a buzzing vibration in the dashboard at low speeds, which turned out to be resonance from the AC electric water pump. Unlike ICE cars that have engine noise to mask it, these auxiliary system sounds are especially noticeable in EVs. He used a smartphone noise-measuring app to pinpoint the source behind the glove box, and the dealership fixed it by adding sponge spacers. The mechanic said northern-made models have cooling pipe clips spaced too far apart, making them prone to body resonance. Also heard some owners encounter whining noises from the charger cooling fan - that's a persistent high-frequency squeal requiring full fan assembly replacement.