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How to change front wheel bearing on Mercedes W169 – replacement guide
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Important!
This replacement procedure can be used for:
MERCEDES-BENZ A-Class (W169) A 160 (169.031, 169.331), MERCEDES-BENZ A-Class (W169) E-CELL (169.090), MERCEDES-BENZ A-Class (W169) A 200 CDI (169.308, 169.008), MERCEDES-BENZ A-Class (W169) A 170 (169.032, 169.332), MERCEDES-BENZ A-Class (W169) A 200 (169.033, 169.333), MERCEDES-BENZ A-Class (W169) A 160 CDI (169.006, 169.306), MERCEDES-BENZ A-Class (W169) A 180 CDI (169.007, 169.307), MERCEDES-BENZ A-Class (W169) A 200 CDI (169.008, 169.308), MERCEDES-BENZ A-Class (W169) A 200 TURBO (169.034, 169.334), MERCEDES-BENZ A-Class (W169) A 180 (169.032, 169.332) … View more
The steps may slightly vary depending on the car design.
MERCEDES-BENZ A-Class (W169) A 160 (169.031, 169.331), MERCEDES-BENZ A-Class (W169) E-CELL (169.090), MERCEDES-BENZ A-Class (W169) A 200 CDI (169.308, 169.008), MERCEDES-BENZ A-Class (W169) A 170 (169.032, 169.332), MERCEDES-BENZ A-Class (W169) A 200 (169.033, 169.333), MERCEDES-BENZ A-Class (W169) A 160 CDI (169.006, 169.306), MERCEDES-BENZ A-Class (W169) A 180 CDI (169.007, 169.307), MERCEDES-BENZ A-Class (W169) A 200 CDI (169.008, 169.308), MERCEDES-BENZ A-Class (W169) A 200 TURBO (169.034, 169.334), MERCEDES-BENZ A-Class (W169) A 180 (169.032, 169.332) … View more
The steps may slightly vary depending on the car design.
How to change front wheel bearing MERCEDES-BENZ A W169 TUTORIAL | AUTODOC

All the parts you need to replace – Wheel Bearing for A-Class (W169) and other MERCEDES-BENZ models
Wheel bearing kit
Alternative products

Wire brush
WD-40 spray
Brake cleaner
Copper grease
Combination spanner #21
Drive socket # 10
Drive socket # 18
Drive socket # 21
Drive socket # 22
Drive socket # 30
Torx bit T30
Wheel impact socket #17
Ratchet wrench
Torque wrench
Ball joint puller
Bush and bearing driver set
Flat chisel
Flat Screwdriver
Hammer
Circlip pliers
Crow bar
Wheel chock
Replacement: wheel bearing – Mercedes W169. Tip from AUTODOC:
- Do not re-use the bearing assembly of your Mercedes W169 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.
Replacement: wheel bearing – Mercedes W169. Recommended sequence of steps:
- Step 1Secure the wheels with chocks.
- Step 2Loosen the wheel mounting bolts. Use wheel impact socket #17.
- Step 3Raise the front of the car and secure on supports.Step 4Unscrew the wheel bolts.Replacement: wheel bearing – Mercedes W169. AUTODOC recommends:To avoid injury, hold up the wheel when unscrewing the bolts.
- Step 5Remove the wheel.
- Step 6Remove the hub bearing protection cap. Use a flat metal-working chisel. Use a hammer.Please note!Some cars are not equipped with wheel hub caps.
- Step 7Clean the wheel hub fastener. Use a wire brush. Use WD-40 spray.Step 8Unscrew the wheel hub axle nut. Use a drive socket #30.
- Step 9Clean the brake caliper bracket fasteners. Use a wire brush. Use WD-40 spray.
- Step 10Unscrew the caliper bracket fastening. Use a drive socket #18. Use a ratchet wrench.
- Step 11Remove the brake caliper together with its bracket.Replacement: wheel bearing – Mercedes W169. Professionals 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 12Clean the brake disc fasteners. Use a wire brush. Use WD-40 spray.Step 13Unscrew the brake disc fastening. Use Torx T30. Use a ratchet wrench.
- Step 14Remove the brake disc.
- Step 15Clean the fastener connecting the tie rod end to the steering knuckle. Use a wire brush. Use WD-40 spray.Step 16Unscrew the end fastening nut to the steering knuckle. Use a drive socket #22. Use a ratchet wrench.
- Step 17Disconnect the tie rod end from the steering knuckle. Use a ball joint puller.
- Step 18Clean the ABS sensor fastener. Use a wire brush. Use WD-40 spray.Step 19Unscrew the ABS sensor fastener. Use a drive socket #10. Use a ratchet wrench.
- Step 20Disconnect the ABS sensor.Step 21Clean the fastener that connects the ball joint to the steering knuckle. Use a wire brush. Use WD-40 spray.Step 22Unscrew the ball joint fastening to the steering knuckle. Use a combination spanner #21.
- Step 23Disconnect the lower arm from the steering knuckle. Use a crowbar. Use a hammer.
- Step 24Clean the fastener of the bracket that connects the brake hose to the shock strut. Use a wire brush. Use WD-40 spray.Step 25Remove the bracket from the shock absorber strut. Use a flat screwdriver.
- Step 26Clean the fasteners connecting the shock strut to the steering knuckle. Use a wire brush. Use WD-40 spray.Step 27Unscrew the lower fastener connecting the shock strut to the steering knuckle. Use a combination spanner #21. Use a drive socket #21. Use a ratchet wrench.
- Step 28Remove the fastening bolts.Step 29Remove the steering knuckle together with the hub.
- Step 30Press the wheel hub out from the tapered roller bearing. Use a bush and bearing driver set. Use a hammer.
- Step 31Remove the retaining ring from the steering knuckle. Use circlip pliers.
- Step 32Press out the wheel hub bearing. Use a bush and bearing driver set.
- Step 33Clean the hub bearing mounting seat. Use a wire brush.
- Step 34Press the new bearing in the steering knuckle. Use a bush and bearing driver set. Use a hammer.Replacement: wheel bearing – Mercedes W169. AUTODOC experts recommend: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 35Install the retaining ring in the steering knuckle. Use circlip pliers.
- Step 36Press the wheel hub into the bearing inner race. Use a bush and bearing driver set.
- Step 37Install the steering knuckle with a hub in assembly.
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