Important!

This replacement procedure can be used for:
AUDI A4 Saloon (8D2, B5) 1.6 … View more

The steps may slightly vary depending on the car design.

How to change rear ABS sensor on AUDI A4 B5 Saloon [TUTORIAL AUTODOC]

All the parts you need to replace – ABS Sensor for A4 Saloon (8D2, B5) and other AUDI models

Clamping Sleeve, wheel speed sensor

Sensor Ring, ABS

Sensor, wheel speed

AUDI A4 Saloon (8D2, B5) 1.6

Replacement: ABS sensor – Audi A4 B5 saloon. Tools you might need:

                        Wire brush
                      
                        WD-40 spray
                      
                        Brake cleaner 
                      
                        All-purpose cleaning spray
                      
                        Electronic spray
                      
                        Multipurpose grease
                      
                        Copper grease 
                      
                        Torque wrench
                      
                        Combination spanner #15
                      
                        Drive socket # 13
                      
                        Drive socket # 24
                      
                        HEX bit No.H8
                      
                        Wheel impact socket #17
                      
                        Ratchet wrench
                      
                        Flat screwdriver
                      
                        Rubber mallet
                      
                        Vernier caliper
                      
                        Tap wrench
                      
                        Hammer
                      
                        Pincers
                      
                        Crow bar
                      
                        Wheel chock

Buy tools

Replacement: ABS sensor – Audi A4 B5 saloon. Tip from AUTODOC experts:

All work should be done with the engine stopped.

Replacement: ABS sensor – Audi A4 B5 saloon. Use the following procedure:

Step 1

Secure the wheels with chocks.

Step 2

Loosen the wheel mounting bolts.Use wheel impact socket #17.
Step 3

Raise the rear of the car and secure on supports.

Step 4

Unscrew the wheel bolts.

AUTODOC recommends:

Warning! To avoid injury, hold the wheel while unscrewing the fastening bolts. Audi A4 B5 saloon
Step 5

Remove the wheel.
Step 6

Clean the ABS sensor fastener.
Step 7

Clean the brake caliper fasteners. Use a wire brush.Use a brake cleaner.

AUTODOC recommends:

Replacement: ABS sensor – Audi A4 B5 saloon. After applying the spray, wait a few minutes.
Step 8

Unscrew the brake caliper fastening.Use a combination spanner #15.Use a drive socket #13.Use a ratchet wrench.
Step 9

Remove the brake caliper.Use a crowbar.

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 10

Remove the brake pads.
Step 11

Clean the brake caliper bracket fasteners. Use a wire brush.Use WD-40 spray.
Step 12

Unscrew the caliper bracket fastening.Use HEX No.H8.Use a ratchet wrench.Use a tap wrench.
Step 13

Remove the caliper bracket.
Step 14

Clean the brake disc fastener.Use a wire brush.Use WD-40 spray.
Step 15

Remove the wheel hub nut cap.Use a hammer.Use a crowbar.
Step 16

Remove the cotter pin securing the hub nut.Use a crowbar.Use a flat screwdriver.
Step 17

Unscrew the hub nut.Use a drive socket #24.Use a tap wrench.
Step 18

Remove the brake disc assemled with the wheel hub bearing.Use a crowbar.
Step 19

Clean the stub axle.Use a wire brush.Use all-purpose cleaning spray.
Step 20

Clean the ABS sensor fastener.Use WD-40 spray.

Step 21

Measure and note the distance between the ABS sensor and the brake disc.Use a vernier caliper.
Step 22

Disconnect the ABS sensor.Use pincers.
Step 23

Disconnect the ABS sensor wiring.Use a crowbar.
Step 24

Remove the rear seats.
Step 25

Detach the ABS sensor connector.
Step 26

Disconnect the ABS sensor.Use pincers.
Step 27

Clean the ABS sensor mounting seat.Use a wire brush.Use WD-40 spray.Use a brake cleaner.

AUTODOC recommends:

Replacement: ABS sensor – Audi A4 B5 saloon. After applying the spray, wait a few minutes.
Step 28

Treat the ABS sensor fastener.Use a multipurpose grease.Use a flat screwdriver.

Step 29

Connect the ABS sensor.

Replacement: ABS sensor – Audi A4 B5 saloon. Tip from AUTODOC experts:

When installing the ABS sensor, keep the required distance between it and the brake disc.
Step 30

Connect the ABS sensor wiring.Use a crowbar.
Step 31

Clean the stub axle.Use a brake cleaner.

AUTODOC recommends:

Replacement: ABS sensor – Audi A4 B5 saloon. After applying the spray, wait a few minutes.

Step 32

Install the brake disc assembled with the wheel hub bearing.

Step 33

Adjust the wheel bearing.

Step 34

Screw on the hub nut.Use a drive socket #24.Use a ratchet wrench.
Step 35

Install a new hub nut cotter pin.Use a hammer.Use a crowbar.
Step 36

Install the cap of the hub nut.Use a rubber mallet.
Step 37

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

Replacement: ABS sensor – Audi A4 B5 saloon. Tip:

After applying the spray, wait a few minutes.
Step 38

Install the brake caliper bracket.
Step 39

Tighten the brake caliper bracket.Use HEX No.H8.Use a torque wrench.Tighten it to 65 Nm torque.
Step 40

Install the brake pads.
Step 41

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 42

Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 43

Clean the brake disk surface.Use a brake cleaner.

AUTODOC recommends:

Replacement: ABS sensor – Audi A4 B5 saloon. After applying the spray, wait a few minutes.
Step 44

Install the wheel.

AUTODOC recommends:

To avoid injury, hold up the wheel when screwing in the fastening bolts.
Step 45

Screw in the wheel bolts.Use wheel impact socket #17.
Step 46

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 47

Remove the jacks and chocks.
Step 48

Treat the ABS sensor connector.Use dielectric grease.
Step 49

Attach the ABS sensor connector.
Step 50

Install the rear seats.

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