What Causes the Abnormal Noise When Starting with Auto Hold?
2 Answers
There are two main reasons for abnormal noise during startup: one is related to the braking system, and the other is due to chassis issues. Below are the detailed explanations: Braking System: In southern regions, where the climate is humid and rainy during spring and autumn, prolonged driving in such conditions can cause the brake discs to gradually rust. Vehicles with waterlogged chassis are particularly prone to brake disc oxidation and rust. In such cases, simply asking a mechanic to remove the rust from the brake discs with sandpaper during maintenance can eliminate the noise. Chassis Issues: This is one of the most common fault phenomena. Many cars experience suspension aging after a certain period of use. At this point, some supporting components in the suspension gradually fail, causing the chassis to produce abnormal noises during startup. It is advisable to promptly visit a 4S store or a professional repair shop for chassis maintenance and inspection to check for issues such as loose bearings, aging, or oil leaks, and replace the corresponding parts as needed.
I've also encountered the issue of abnormal noises when starting with auto hold before. At first, I thought it was normal and didn't pay much attention, but later realized there could be several underlying problems. The most common cause is brake system issues, such as excessively worn brake pads or rust accumulation on the brake discs, which can create squeaking sounds when the system releases the brakes. Another possibility is faulty electronic components like sensors or motors, leading to imprecise control and generating noise. Additionally, loose chassis or suspension parts can also cause abnormal noises, especially during the initial moments of acceleration when force is applied. I recommend regularly inspecting the brake system and giving the brake discs a simple wipe every month. If the noise persists for more than a week or two, it's best to visit a 4S shop or professional repair shop. Remember, ignoring it might not only increase fuel consumption but also pose safety risks. Safe driving starts with paying attention to these small details.
