Recommended replacement interval for the part category Brake Disc : 50000 km

Important!

This replacement procedure can be used for:
AUDI A4 Saloon (8K2, B8) 2.0 TFSI quattro, AUDI A4 Saloon (8K2, B8) 2.0 TFSI Flexfuel quattro … View more

The steps may slightly vary depending on the car design.

How to change rear brake discs / rear brake rotors on AUDI A4 B8 Saloon [TUTORIAL AUTODOC]

All the parts you need to replace – Brake Discs for A4 Saloon (8K2, B8) and other AUDI models

Brake Disc

AUDI A4 Saloon (8K2, B8) 2.0 TFSI quattro

AUDI A4 Saloon (8K2, B8) 2.0 TFSI Flexfuel quattro

Replacement: brake discs – Audi A4 B8. Tools you might need:

                        Wire brush
                      
                        Nylon cleaning brush 
                      
                        WD-40 spray
                      
                        Brake cleaner 
                      
                        Copper grease 
                      
                        Combination spanner #15
                      
                        Combination spanner #18
                      
                        Drive socket # 13 
                      
                        Drive socket # 18 
                      
                        Torx bit T30
                      
                        Wheel impact socket #17
                      
                        Ratchet wrench
                      
                        Torque wrench
                      
                        Brake caliper wind back tool
                      
                        Impact screwdriver
                      
                        Crow bar
                      
                        Wheel chock

Buy tools

Replacement: brake discs – Audi A4 B8. AUTODOC recommends:

Replace the brake disks on the car Audi A4 B8 in complete set for each axis. Regardless of the state of components. This will ensure even braking.
The replacement procedure is identical for both brake disks on the same axle.
When changing the brake discs, always replace the brake pads.
All work should be done with the engine stopped.

Replacement: brake discs – Audi A4 B8. Recommended sequence of steps:

Step 1

Open the bonnet.Unscrew the brake fluid reservoir cap.
Step 2

Put the parking brake system into service mode.
Step 3

Secure the wheels with chocks.
Step 4

Loosen the wheel mounting bolts.Use wheel impact socket #17.
Step 5

Raise the rear of the car and secure on supports.
Step 6

Unscrew the wheel bolts.

AUTODOC recommends:

Important! Hold the wheel while unscrewing the fastening bolts. Audi A4 B8
Step 7

Remove the wheel.
Step 8

Clean the brake caliper fasteners. Use a wire brush.Use WD-40 spray.
Step 9

Unscrew the brake caliper fastening.Use a combination spanner #15.Use a drive socket #13.Use a ratchet wrench.
Step 10

Spread the brake pads.Use a crowbar.
Step 11

Remove the brake caliper.

Replacement: brake discs – Audi A4 B8. AUTODOC experts recommend:

Tie the caliper to the suspension or to the body with a wire without disconnecting from the brake hose to prevent depressurization of the brake system.Make sure that the brake caliper is not hanging on the brake hose.Don't press the brake pedal after the brake caliper has been removed. As a result, the piston can fall out from the brake cylinder, and brake fluid leakage and depressurization of the system may occur. Check the brake caliper bracket, brake caliper guide pins and boots. Clean them. Replace, if necessary.
Step 12

Remove the brake pads.
Step 13

Clean the brake caliper bracket fasteners. Use a wire brush.Use WD-40 spray.
Step 14

Unscrew the caliper bracket fastening.Use a combination spanner #18.
Step 15

Remove the caliper bracket.
Step 16

Clean the brake disc fasteners.Use a wire brush.Use WD-40 spray.
Step 17

Unscrew the brake disc fastening.Use Torx T30.Use an impact screwdriver.
Step 18

Remove the brake disc.
Step 19

Clean the hub.Use a wire brush.Treat the contacting surface.Use copper grease.
Step 20

Install the brake disc.
Step 21

Tighten the brake disc fastening.Use Torx T30.Use a torque wrench.Tighten it to 9 Nm torque.
Step 22

Remove the retaining springs of the brake pads.
Step 23

Clean the brake caliper bracket from dirt and dust.Use a wire brush.Use a brake cleaner.

AUTODOC recommends:

Replacement: brake discs – Audi A4 B8. After applying the spray, wait a few minutes.
Step 24

Install the brake caliper bracket.
Step 25

Tighten the brake caliper bracket.Use a drive socket #18.Use a torque wrench.Tighten it to 75 Nm torque.
Step 26

Treat the brake caliper piston.Use a nylon cleaning brush. Use a brake cleaner.

Replacement: brake discs – Audi A4 B8. Tip:

After applying the spray, wait a few minutes.
Step 27

Press in the brake caliper piston.Use brake caliper wind back tool.
Step 28

Install the retaining springs of the brake pads.
Step 29

Install the brake pads.
Step 30

Install the brake caliper and fix it.Use a combination spanner #15.Use a drive socket #13.Use a torque wrench.Tighten it to 35 Nm torque.
Step 31

Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 32

Clean the brake disk surface.Use a brake cleaner.

Replacement: brake discs – Audi A4 B8. Tip from AUTODOC:

After applying the spray, wait a few minutes.
Step 33

Install the wheel.

AUTODOC recommends:

Important! Hold the wheel while screwing in the fastening bolts. Audi A4 B8
Step 34

Screw in the wheel bolts.Use wheel impact socket #17.
Step 35

Lower the car and working in a cross order, tighten the wheel bolts.Use wheel impact socket #17.Use a torque wrench.Tighten it to 120 Nm torque.
Step 36

Remove the jacks and chocks.
Step 37

Deactivate the service mode of the parking brake system.

AUTODOC recommends:

Important! Replacement: brake discs – Audi A4 B8. Check the brake fluid level in the reservoir and top up if necessary.
Step 38

Tighten the brake fluid reservoir cap.

AUTODOC recommends:

Audi A4 B8 – Without starting the engine, press the brake pedal several times until it feels firm.
Step 39

Close the hood.

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