What are the causes of brake noise in the XPeng P7?
2 Answers
The following are the reasons for brake noise in the XPeng P7: 1. Reason one: Severe wear of brake pads: When the brake pads reach the end of their service life, the surface friction blocks are severely worn, causing the steel plate at the bottom of the brake pads to rub against the brake disc during braking, resulting in a screeching noise. The maintenance technician uses a lift to raise the vehicle, remove the wheels, and inspect the wear of the brake pads. 2. Reason two: Brake pads are too hard: The hardness of the brake pads is primarily due to the material used. If the brake pads are too hard, especially in low-temperature environments, and there is water on the brake pads, the driver may hear sharp friction sounds when braking. Conversely, if the brake pads are too soft, they will wear out very quickly. Therefore, brake pads that are either too hard or too soft will affect the driving experience. The maintenance technician can use a lift to raise the vehicle, remove the brake pads, and observe their thickness, or drive the vehicle in a safe area and test by applying the brakes. 3. Reason three: Brake caliper failure: During vehicle braking, the brake caliper pushes the brake pads to achieve the braking process. If the brake caliper malfunctions, the brake pads may not fully contact the brake disc when the driver applies the brakes, resulting in noise. The maintenance technician uses a lift to raise the vehicle, remove the wheels, and check if the brake caliper is cracked.
A friend asked me the other day why their XPeng P7's brakes were making noise, and I've come across quite a few similar cases. Common causes include the metal layer scraping the disc when the brake pads wear too thin, much like a knife scraping the bottom of a pot; brake discs rusting or warping, leading to uneven surfaces that squeak during friction, especially right after startup following rain; tiny sand or stones getting stuck in the gaps causing temporary strange noises; or aging brake components like insufficient lubrication in the calipers leading to poor retraction. As an electric vehicle, the P7's regenerative braking can also add noise when switching between energy recovery at low speeds and traditional braking isn't smooth. I always advise not to take it lightly and to get it checked at a professional shop promptly to prevent any loss of braking power that could lead to danger.
