At Meta Mechanics, we recently carried out a rear brake pad replacement on an Audi SQ5, and during the service, we uncovered several critical issues that were affecting the vehicle’s braking system. Below is a detailed overview of what we found, the impact on vehicle performance, and the solutions we implemented to ensure the Audi SQ5 continues to perform safely and efficiently.
Issue Identified:
Issue #1: Severely Worn Rear Brake Pads
- What We Found: The rear brake pads were worn down to a dangerously low level, beyond the minimum thickness recommended by Audi. Worn-out brake pads can significantly reduce braking performance, increasing the risk of accidents, longer stopping distances, and potential damage to the rotors.
- Solution: We replaced the old brake pads with high-quality, OEM-compatible brake pads designed specifically for the Audi SQ5. These pads provide reliable, consistent braking performance, ensuring safety and comfort when driving.
Issue #2: Brake Pad Glazing
- What We Found: The rear brake pads were glazed—meaning the surface of the pads had become hardened and smooth from excessive heat buildup. This glazing reduces friction, causing ineffective braking, increased brake noise, and vibration during use.
- Solution: In addition to replacing the glazed pads, we thoroughly cleaned the brake system, addressing any source of heat buildup. New, high-performance pads were installed, ensuring better friction, smoother braking, and less noise.
Issue #3: Uneven Pad Wear
- What We Found: Upon closer inspection, we discovered uneven wear on the brake pads. One side of the pads was significantly more worn than the other. Uneven wear is often caused by a malfunctioning brake caliper, improper alignment, or insufficient lubrication, and it can lead to reduced braking performance and premature wear on new pads.
- Solution: We conducted a thorough inspection of the brake calipers and suspension system to identify the root cause of the uneven wear. After cleaning, lubricating, and adjusting the calipers, we installed the new brake pads and ensured that they made even contact with the rotors for optimal braking performance.
Issue #4: Rust and Scoring on Brake Rotors
- What We Found: The rear brake rotors showed signs of rust and scoring, which can occur when moisture or debris accumulates on the rotor surface. This can lead to vibrations, noise, and reduced braking efficiency. Scored rotors can also cause rapid pad wear, as the surface becomes uneven.
- Solution: We resurfaced the rotors to remove the rust and scoring, ensuring that the surface was smooth and free from imperfections. In this case, the rotors were still in good condition and did not require replacement, but resurfacing ensured they would work optimally with the new pads. If the rotors had been too damaged, we would have recommended full rotor replacement.
Issue #5: Brake Fluid Contamination
- What We Found: During the inspection, we found that the brake fluid was contaminated with moisture and debris, which is a common issue over time. Contaminated brake fluid can compromise the entire braking system, causing brake fade, reduced performance, and internal corrosion.
- Solution: We performed a full brake fluid flush, replacing the old fluid with high-quality, fresh brake fluid that meets Audi’s specifications. This restores the braking system’s efficiency and protects the components from corrosion, ensuring longer-term reliability.
Audi SQ5 Inspection of Rear Brake Pads
Audi SQ5 Removal of Rear Wheels
Audi SQ5 Removal of Old Rear Brake Pads
Audi SQ5 Inspection of Rear Brake Rotors for Damage or Wear
Audi SQ5 Rotor Resurfacing or Replacement (if necessary)
Audi SQ5 Cleaning of Brake Components (Calipers, Rotors, etc.)
Audi SQ5 Lubrication of Caliper Slides and Hardware
Audi SQ5 Installation of New Rear Brake Pads
Audi SQ5 Brake Pad Bedding-In Process
Audi SQ5 Reinstallation of Rear Wheels and Torque Check
