What Causes the Squeaking Sound in Q5 Brakes?
3 Answers
Audi Q5 brakes squeaking reasons are as follows: 1. Use of inferior or overly hard brake pads: If the owner uses excessively hard brake discs or purchases inferior quality brake pads, a squeaking sound will be heard when braking. Additionally, poor-quality brake pads can damage the brake discs. 2. Foreign objects between the brake pads and brake discs: When driving on complex road conditions, wheels can easily fling stones or other foreign objects. If a stone gets lodged between the brake pads and brake discs, it will cause abnormal noises during braking. 3. Severe wear of brake pads: When the brake discs are directly scratched by foreign objects or dented by impacts, the friction between the brake pads and the uneven brake discs will produce a squeaking sound. 4. Brake pad wear reaches the warning line, triggering an alarm: If the brake pad wear reaches the warning line, it will emit a squeaking alarm sound.
I often encounter the issue of squeaky brakes. The most common cause is excessively thin brake pads. When the pads wear down to their limit, the small metal indicator will rub against the brake disc, producing a sharp squealing sound to remind you it's time for replacement. Rust formation on brake discs after rainy or humid weather can also cause this noise, which typically disappears after driving a few kilometers as the rust wears off. If you notice uneven grooves on the disc surface, it might be due to small stones or metal debris lodged in the brake pads. Some budget brake pads contain excessive metal particles and have high hardness, making them prone to abnormal noises. Important reminder: Never ignore this sound. I once delayed addressing it and ended up with significantly longer braking distances, nearly causing a rear-end collision. Especially before highway driving, this issue must be resolved - safety should never be taken lightly.
When it comes to brake noise, I have my own diagnostic procedure. First, don't rush to the repair shop. Recall whether you've recently driven through deep water or parked in a humid environment, which could cause oxidation and rust on the brake discs. Second, lightly apply the brakes at 40 km/h on an open road to determine if the noise is continuous or intermittent. The key is to check if the wear is even—uneven wear often indicates a stuck brake caliper guide pin. Those who have modified their brakes should pay extra attention, as performance brake pads with high copper content will inevitably produce noise. During my own car maintenance, I always check if the anti-noise shims at both ends of the brake pads are misaligned, as this can also cause localized vibration and noise. Finally, a hidden danger: prolonged brake noise can lead to fish-scale patterns on the brake discs, and if not addressed promptly, the discs will need resurfacing or replacement.
