How to Deal with Squeaking Noises When Braking in Reverse?
2 Answers
When the brake pads wear beyond the specified warning value, the warning piece will emit abnormal noises to remind the owner to promptly check or replace the new brake pads at a repair shop. Visit a repair shop to grind the edges of the brake pads to avoid the raised edges of the brake disc and prevent friction; or directly choose to replace the brake disc. New cars may produce sharp noises when braking because new brake pads and brake discs require a break-in period. You can apply some lubricating oil at a repair shop. There may be defects in the braking system itself, causing the brake pads to only partially contact the brake disc. It is recommended to check components such as the caliper and guide pins.
I happened to experience a screeching noise when braking in reverse just once. It was right after rain when the noise was terrifyingly loud during reverse driving, which scared me into an immediate inspection. Turned out the brake pads were worn too thin and were smoking from friction—replacing them with new ones instantly solved the issue. Normally, if brake pads are severely worn or clogged with dust, the increased friction during reverse braking can cause squealing. My advice: first, check the pad thickness yourself—replace if it's below 3mm. Then, spray some brake cleaner to remove rust and debris from the disc surface, ensuring no mud gets stuck. Also, lubricate the guide pins to prevent seizing. Handling this at home is straightforward and saves hassle, but always prioritize safety—don’t be careless in reverse, as insufficient braking could lead to collisions or damage. Regular brake system maintenance is crucial, especially since rust builds up easily in rainy conditions.
