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How to change front wheel bearing on AUDI A8 D3 (4E2, 4E8) – replacement guide

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Important!

This replacement procedure can be used for:
AUDI A8 (4E2, 4E8) 3.7 quattro, AUDI A8 (4E2, 4E8) 4.2 quattro … 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

All the parts you need to replace – Wheel Bearing for A8 (4E2, 4E8) and other AUDI models

Alternative products

Wheel bearing kit

Replacement: wheel bearing – AUDI A8 (4E_). Tools you might need:

                      Wire brush
                    
                      Nylon cleaning brush
                    
                      WD-40 spray
                    
                      Electronic spray
                    
                      All-purpose cleaning spray
                    
                      Brake cleaner
                    
                      Sealant
                    
                      Copper grease 
                    
                      Torque wrench
                    
                      Combination spanner #13
                    
                      Combination spanner #16
                    
                      Combination spanner #18
                    
                      Drive socket # 13 
                    
                      Drive socket # 15 
                    
                      Drive socket # 18 
                    
                      Drive socket # 21 
                    
                      XZN socket bit # 12 
                    
                      HEX bit No.H17.
                    
                      Torx bit T30
                    
                      Wheel impact socket #17
                    
                      Bush and bearing driver set
                    
                      Ratchet wrench
                    
                      Tap wrench
                    
                      Hammer
                    
                      Pin punch
                    
                      Flat chisel
                    
                      Flat Screwdriver
                    
                      Crow bar
                    
                      Vice
                    
                      3-Arm Gear Puller
                    
                      Ball joint puller
                    
                      Bearing separator
                    
                      Universal puller
                    
                      Hydraulic transmission jack
                    
                      Wheel chock

Buy tools

Replacement: wheel bearing – AUDI A8 (4E_). AUTODOC recommends:

Do not re-use the bearing assembly of your AUDI A8 (4E_) saloon car.
The wheel hub bearing replacement procedure is identical for both wheels on the same axle.
All work should be done with the engine stopped.

Carry out replacement in the following order:

Step 1

Secure the wheels with chocks.
Step 2

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

Loosen the fastener of the driveshaft. Use HEX No.H17. Use a tap wrench.
Step 4

Raise the front of the car and secure on supports.

Step 5

Unscrew the wheel bolts.

Replacement: wheel bearing – AUDI A8 (4E_). Tip:
To avoid injury, hold up the wheel when unscrewing the bolts.
Step 6

Remove the wheel.
Step 7

Clean the ABS sensor fastener. Use a nylon cleaning brush.
Step 8

Disconnect the brake pad wear sensor plug. Use a flat screwdriver.

Please note!
Some cars are not equipped with the brake pad wear sensor.
Step 9

Spread the brake pads. Use a crowbar.
Step 10

Clean the brake caliper bracket fasteners. Use a wire brush. Use WD-40 spray.
Step 11

Unscrew the caliper bracket fastening. Use a drive socket #21. Use a ratchet wrench. Use a tap wrench.
Step 12

Remove the brake caliper together with its bracket.

Replacement: wheel bearing – AUDI A8 (4E_). 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

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

Step 14

Remove the brake disc.
Step 15

Clean all joints of the arm. Use a wire brush. Use WD-40 spray.

Replacement: wheel bearing – AUDI A8 (4E_). Tip from AUTODOC:
After applying the spray, wait a few minutes.Wear protective goggles.Wear a respirator.
Step 16

Unscrew the ball joint fastening to the steering knuckle. Use a drive socket #18. Use a tap wrench.
Step 17

Unscrew the ball joint fastening to the steering knuckle. Use a combination spanner #18.
Step 18

Disconnect the ball joint from the steering knuckle. Use a ball joint puller.
Step 19

Detach the control arm.
Step 20

Disconnect the ball joint from the steering knuckle. Use a ball joint puller.
Step 21

Detach the control arm.
Step 22

Remove the fastening bolt.
Step 23

Clean the ABS sensor fastener. Use a nylon cleaning brush. Use all-purpose cleaning spray.
Step 24

Disconnect the ABS sensor wiring. Use a flat screwdriver.
Step 25

Detach the ABS sensor connector.
Step 26

Clean all joints of the arm. Use a wire brush. Use WD-40 spray.
Step 27

Unscrew the upper arm fastenings. Use a combination spanner #16.
Step 28

Remove the fastening bolt.
Step 29

Remove the control arms.
Step 30

Clean the fastener connecting the tie rod end to the steering knuckle. Use a wire brush. Use WD-40 spray.
Step 31

Loosen the tie rod end fastening bolt. Use a drive socket #13. Use a ratchet wrench.
Step 32

Unscrew the end fastening nut to the steering knuckle. Use a drive socket #15. Use a ratchet wrench.
Step 33

Remove the fastening bolt. Use a pin punch. Use a hammer.
Step 34

Prop up the steering knuckle. Use a hydraulic transmission jack.
Step 35

Disconnect the tie rod end from the steering knuckle. Use a flat metal-working chisel. Use a hammer.
Step 36

Remove the drive shaft.

Replacement: wheel bearing – AUDI A8 (4E_). Tip from AUTODOC experts:
Make sure that the drive shaft is not unloaded (when the car is jacked).
Step 37

Remove the support from under the steering knuckle.

AUTODOC recommends:
AUDI A8 (4E_) – Do not lower the transmission jack sharply to avoid damaging components and mechanisms of the car.
Step 38

Remove the steering knuckle together with the hub.
Step 39

Grip the wheel hub together with the bearing in a vice.
Step 40

Clean the wheel hub fastener. Use a wire brush. Use WD-40 spray.
Step 41

Unscrew the wheel hub axle nut. Use XZN #12. Use a ratchet wrench.
Step 42

Remove the wheel hub from the steering knuckle.
Step 43

Remove the hub bearing mounting. Use a universal puller.
Step 44

Pull the bearing inner race out of the wheel hub. Use 3-Arm Gear Puller. Use a bearing separator.
Step 45

Clean the hub bearing mounting seat. Use a wire brush. Use WD-40 spray.

Step 46

Press a new bearing into the wheel hub. Use a bush and bearing driver set.

Replacement: wheel bearing – AUDI A8 (4E_). Tip:
Check to make sure the wheel hub bearing is positioned correctly. Avoid its misalignment. Stop pressing on the surface of the bearing immediately after it has been fitted into its mounting seat.
Step 47

Clean the hub bearing mounting seat. Use a wire brush. Use WD-40 spray.
Step 48

Treat the fastening bolts. Use a sealant.
Step 49

Install the wheel hub on the steering knuckle.
Step 50

Tighten the hub. Use XZN #12. Use a torque wrench. Tighten it to 80 Nm torque.+90°

AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 51

Treat the fasteners of the wheel hub bearing. Use copper grease.
Step 52

Release the vice and take out the wheel hub together with the bearing.
Step 53

Treat the wheel hub mounting seat. Use a wire brush. Use WD-40 spray.
Step 54

Install the steering knuckle with a hub in assembly.
Step 55

Prop up the steering knuckle. Use a hydraulic transmission jack.
Step 56

Install the drive shaft.
Step 57

Install and tighten the drive shaft bolt. Use HEX No.H17. Use a tap wrench.
Step 58

Install the control arms.
Step 59

Install the fastening bolt.
Step 60

Screw in the fasteners of the upper control arms. Use a combination spanner #16 (2 pieces).
Step 61

Connect the tie rod end to the steering knuckle.
Step 62

Install the fastening bolt.
Step 63

Screw in the tie rod end fastening bolt. Use a combination spanner #13.
Step 64

Screw on the fastening nut that connects the tie rod end to the steering knuckle. Use a drive socket #15. Use a ratchet wrench.
Step 65

Remove the support from under the steering knuckle.

AUTODOC recommends:
Replacement: wheel bearing – AUDI A8 (4E_). Lower the transmission jack smoothly, without jerks, to avoid damaging components and mechanisms.
Step 66

Attach the control arm.
Step 67

Connect the ball joint to the steering knuckle.
Step 68

Screw the fasteners of the ball joint. Use a combination spanner #18.
Step 69

Attach the control arm.

Step 70

Connect the ball joint to the steering knuckle.

Step 71

Screw the fasteners of the ball joint. Use a combination spanner #18.
Step 72

Connect the ABS sensor wiring.
Step 73

Attach the ABS sensor connector.
Step 74

Clean the hub. Use a wire brush. Treat the contacting surface. Use copper grease.
Step 75

Install the brake disc.
Step 76

Tighten the brake disc fastening. Use Torx T30. Use a torque wrench. Tighten it to 5 Nm torque.
Step 77

Install the brake caliper together with its bracket.
Step 78

Tighten the brake caliper bracket. Use a drive socket #21. Use a torque wrench. Tighten it to 190 Nm torque.
Step 79

Tighten the ball joint fastener. Use a drive socket #18. Use a torque wrench. Tighten it to 110 Nm torque.
Step 80

Tighten the ball joint fastener. Use a combination spanner #18. Use a torque wrench. Tighten it to 110 Nm torque.
Step 81

Treat the brake pad wear sensor plug. Use dielectric grease. The spray will protect the electrical contacts from corrosion, oxidation, and will reduce the contact resistance.
Step 82

Connect the brake pad wear sensor plug.
Step 83

Tighten the tie rod end fastening bolt. Use a drive socket #13. Use a torque wrench. Tighten it to 7 nm torque.
Step 84

Tighten the fastening nut connecting the tie rod end to the steering knuckle. Use a drive socket #15. Use a torque wrench. Tighten it to 45 nm torque.
Step 85

Tighten the upper arm fastenings. Use a combination spanner #16. Use a drive socket #16. Use a torque wrench. Tighten it to 40 nm torque.
Step 86

Treat all joints of the arm. Treat the fasteners of the ball joint. Treat the fastener connecting the tie rod end to the steering knuckle. Use copper grease.
Step 87

Clean the wheel rim mounting seat. Use a wire brush.
Step 88

Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 89

Clean the brake disk surface. Use a brake cleaner.

AUTODOC recommends:
Replacement: wheel bearing – AUDI A8 (4E_). After applying the spray, wait a few minutes.
Step 90

Install the wheel.

Replacement: wheel bearing – AUDI A8 (4E_). Tip from AUTODOC:
To avoid injury, hold up the wheel when screwing in the fastening bolts.
Step 91

Screw in the wheel bolts. Use wheel impact socket #17.
Step 92

Lower the car.

Step 93

Tighten the bolt connecting the drive shaft to the wheel hub. Use HEX No.H17. Use a torque wrench. Tighten it to 115 Nm torque.+180°

AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 94

Tighten the wheel bolts using a criss-cross pattern. Use wheel impact socket #17. Use a torque wrench. Tighten it to 120 Nm torque.
Step 95

Remove the jacks and chocks.

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