Important!

This replacement procedure can be used for:
AUDI A3 Hatchback (8L1) 1.6, AUDI A3 Hatchback (8L1) 1.8, AUDI A3 Hatchback (8L1) 1.8 T, AUDI A3 Hatchback (8L1) 1.9 TDI, AUDI A3 Hatchback (8L1) 1.9 TDI, AUDI A3 Hatchback (8L1) 1.8 T quattro, AUDI A3 Hatchback (8L1) S3 quattro, AUDI A3 Hatchback (8L1) 1.8 T quattro, AUDI A3 Hatchback (8L1) 1.8 T, AUDI A3 Hatchback (8L1) 1.9 TDI, AUDI A3 Hatchback (8L1) 1.6, AUDI A3 Hatchback (8L1) 1.9 TDI … View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

Alternative products

ABS sensor

Replacement: ABS sensor – AUDI A3 (8L1). Tools you might need:

                      Wire brush
                    
                      WD-40 spray
                    
                      Brake cleaner 
                    
                      Electronic spray
                    
                      Copper grease 
                    
                      Multipurpose grease
                    
                      Torque wrench
                    
                      Torx bit T30
                    
                      HEX bit No.H5
                    
                      HEX bit No.H8
                    
                      Wheel impact socket #17
                    
                      Ratchet wrench
                    
                      Flat screwdriver
                    
                      Water pump pliers
                    
                      Pin punch
                    
                      Tap wrench
                    
                      Hammer
                    
                      Crow bar
                    
                      Wheel chock

Buy tools

Replacement: ABS sensor – AUDI A3 (8L1). Tip from AUTODOC:

All work should be done with the engine stopped.

Replacement: ABS sensor – AUDI A3 (8L1). 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 A3 (8L1)
Step 5

Remove the wheel.
Step 6

Clean the ABS sensor fastener. Use a nylon cleaning brush. Use WD-40 spray.
Step 7

Detach the ABS sensor connector. Use a flat screwdriver.
Step 8

Unscrew the ABS sensor fastener. Use HEX No.H5. Use a ratchet wrench.
Step 9

Clean the brake caliper bracket fasteners. Use a wire brush. Use WD-40 spray.
Step 10

Unscrew the brake caliper bracket fasteners. Use HEX No.H8. Use a ratchet wrench. Use a tap wrench.
Step 11

Release the parking brake cable. Use water pump pliers. Use a crowbar.
Step 12

Remove the brake caliper together with its bracket.

Replacement: ABS sensor – AUDI A3 (8L1). 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 13

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

Step 14

Unscrew the brake disc fastening. Use Torx T30. Use a ratchet wrench.
Step 15

Remove the brake disc.
Step 16

Disconnect the ABS sensor. Use a pin punch. Use a hammer. Use a crowbar.
Step 17

Clean the ABS sensor mounting seat. Use a wire brush. Use WD-40 spray.
Step 18

Treat the ABS sensor fastener. Use a multipurpose grease.
Step 19

Connect the ABS sensor.
Step 20

Tighten the fastener connecting the ABS sensor to the stub axle. Use HEX No.H5. Use a torque wrench. Tighten it to 6 Nm torque.
Step 21

Treat the ABS sensor connector. Use dielectric grease.
Step 22

Attach the ABS sensor connector.
Step 23

Clean the hub. Use a wire brush. Treat the contacting surface. Use copper grease.
Step 24

Install the brake disc.
Step 25

Tighten the brake disc fastening. Use Torx T30. Use a torque wrench. Tighten it to 6 Nm torque.
Step 26

Install the brake caliper together with its bracket.
Step 27

Tighten the brake caliper bracket. Use HEX No.H8. Use a torque wrench. Tighten it to 45 Nm torque.
Step 28

Install the parking brake cable into the brake caliper bracket. Use water pump pliers. Use a crowbar.
Step 29

Clean the wheel rim mounting seat. Use a wire brush.
Step 30

Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 31

Clean the brake disk surface. Use a brake cleaner.

AUTODOC recommends:
Replacement: ABS sensor – AUDI A3 (8L1). After applying the spray, wait a few minutes.
Step 32

Install the wheel.

AUTODOC recommends:
To avoid injury, hold up the wheel when screwing in the fastening bolts.
Step 33

Screw in the wheel bolts. Use wheel impact socket #17.
Step 34

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 35

Remove the jacks and chocks.

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