2022-2026 Audi Ceramic Brake Piston Inserts TSB

Audi has released Technical Service Bulletin (TSB) 2069078/3, addressing a specific condition concerning the ceramic brake systems in various 2022-2026 models. This bulletin highlights instances where zirconium inserts within the brake pistons may become loose. While the TSB states that the brake system's function is not affected, this condition can lead to various brake-related noises and vibrations.

Symptoms

Owners of affected Audi models with ceramic brakes might notice several symptoms related to the brake system. These are typically noises or vibrations originating from the front of the vehicle. Common complaints include:

• Brake noises described as too loud, whistling, buzzing, crunching, groaning, crackling, pinging, chattering, snapping, thumping, squeaking, or general noise and vibrating.
• Appearance issues such as coating flaws, corrosion, rust, or material detaching from brake components.
• Contamination or dirty brake rotors and pads.
• In some cases, technicians might observe 'wear too high' on automotive fluid components.

Diagnosis / Trigger Conditions

Unlike many issues that prompt an owner to visit the dealership, the condition of Audi e-tron loose brake inserts is often not reported by the customer. According to TSB 2069078/3, there are typically no customer concerns directly related to this issue. Instead, the loose zirconium inserts are usually discovered by technicians during routine diagnostic work or when performing other brake system services, such as replacing brake pads. During these procedures, it may be noticed that the zirconium inserts are not firmly attached to the brake piston and can be turned or moved.

Repair Procedure Summary

The repair for loose zirconium inserts in the ceramic brake pistons is straightforward and does not require replacing major components. The TSB specifies the following steps:

• Technicians are instructed to simply fit the zirconium insert back into the brake piston, ensuring it is properly seated.
• The bulletin explicitly states that it is not necessary or justified to replace the entire brake caliper for this condition.
• Importantly, the TSB clarifies that the brake system's overall functions are not affected by loose zirconium inserts, meaning safety or performance is not compromised.