Leak Test

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2022 Audi SQ5, 2022 Audi Q5 e, 2022 Audi Q5, 2021 Audi SQ5, and 2021 Audi Q5 e. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Brake Pressure Gauge: VAG1310A
Brake Pedal Actuator: VAG1869/2 .

High Pressure Test:

Brake system (brake master cylinder, brake hoses, brake lines and brake calipers) tested for function and leaks.

-- Remove the bleed screw at one of the front brake calipers. Connect the : VAG1310 A and bleed.

-- Insert the : VAG1869/2 between the brake pedal and driver seat. Apply pressure to the brake pedal until the pressure gauge indicates a pressure of 50 bar. The pressure must not drop more than 4 bar during the test period of 45 seconds.

Fig 1: Brake Pedal Depressor VAG 1869/2 Inserted Between Brake Pedal And Driver's Seat

Courtesy of AUDI OF AMERICA, LLC

Replace the brake master cylinder if the pressure decrease is too high.

Low Pressure Testing:

-- Set the brake pedal actuator back far enough that the pressure gauge indicates 6 bar positive pressure.

-- The pressure must not drop by more than 1 bar during a test period of 3 minutes.

Replace the brake master cylinder if the pressure decrease is too high.