Brake Pads, Checking Thickness

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2016 Audi S4, 2016 Audi A4 Quattro, 2016 Audi A4, 2015 Audi S4, and 2015 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

Replace the brake pads once they have reached the wear limit. Perform the repairs and inform the customer.

Special tools and workshop equipment required

Test Pin T40139

Fig 1: Identifying Test Pin T40139
Courtesy of AUDI OF AMERICA, LLC

NOTE:

Use the thin measuring pin (brake symbol) to measure the brake pad thickness.

-- Slide the sliding ring all the way in the direction of the measuring point.

-- Place the tip of the test pin on the brake rotor.

-- Slide the test pin evenly in the direction of the brake pad until the test pin touches the brake pad backing plate.

-- Carefully remove the test pin and read the value on the scale.

NOTE:

Make sure the sliding ring does not move, otherwise the measurement will be incorrect.

It is required to remove the wheels for specific tire combinations. Refer to WHEEL BOLTS, TIGHTENING .

Fig 2: Checking Front Pad Thickness

Courtesy of AUDI OF AMERICA, LLC

a - Pad thickness including backing plate and damping plate

- Wear limit: -a- = 10 mm

Fig 3: Checking Rear Pad Thickness

Courtesy of AUDI OF AMERICA, LLC

a - Pad thickness including backing plate and damping plate

- Wear limit: -a- = 7 mm