Important!
This replacement procedure can be used for:
MERCEDES-BENZ A-Class (W169) A 150 (169.031, 169.331), MERCEDES-BENZ B-Class (W245) B 150 (245.231)

The steps may slightly vary depending on the car design.

How to replace rear brake discs and brake pads MERCEDES-BENZ A W169 TUTORIAL | AUTODOC

Required tools:
Required tools:
Wire brush
WD-40 spray
Brake cleaner
Brake caliper guide pins grease
Copper grease
Sealant
Torx bit T30
Combination spanner #13
Combination spanner #15
Combination spanner #16
Wheel impact socket #17
Brake caliper wind back tool
Ratchet wrench
Torque wrench
Crow bar
Wheel chock
All the parts you need to replace – Brake Discs for A-Class (W169) and other MERCEDES-BENZ models
How to change Brake Disc on Mercedes W169 A 180 CDI 2.0 (169.007, 169.307) – step-by-step instructions for straightforward car repair
Brake Disc
How to change Brake Disc on MERCEDES-BENZ A-Class (W169) A 150 (169.031, 169.331) – tips for proper car maintenance
MERCEDES-BENZ A-Class (W169) A 150 (169.031, 169.331)
Simple DIY car repair steps – Replacing Brake Disc on MERCEDES-BENZ B-Class (W245) B 150 (245.231)
MERCEDES-BENZ B-Class (W245) B 150 (245.231)
AUTODOC recommends:
  • Replace the brake disks on the car Mercedes-Benz W169 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.
Carry out replacement in the following order:
  1. How to change Brake Discs on Mercedes W169 2004 - free PDF and video manuals
    Step 1
    Open the bonnet.Unscrew the brake fluid reservoir cap.
  2. How to replace MERCEDES-BENZ A-Class (W169) A 180 CDI 2.0 (169.007, 169.307) 2005 Brake Discs - step-by-step manuals and video guides
    Step 2
    Secure the wheels with chocks.
  3. Mercedes W169 A 150 1.5 (169.031, 169.331) 2006 Brake Discs replacement: free workshop manuals
    Step 3
    Loosen the wheel mounting bolts.Use wheel impact socket #17.
  4. Changing Brake Discs on MERCEDES-BENZ A-Class (W169) A 160 CDI 2.0 (169.006, 169.306) 2007 by yourself
    Step 4
    Raise the rear of the car and secure on supports.
    Step 5
    Unscrew the wheel bolts.
    AUTODOC recommends:
    To avoid injury, hold up the wheel when unscrewing the bolts.
  5. How to remove MERCEDES-BENZ A-CLASS A 200 CDI 2.0 (169.008, 169.308) 2008 Brake Discs - online easy-to-follow instructions
    Step 6
    Remove the wheel.
  6. How to replace Brake Discs on MERCEDES-BENZ A-Class (W169) 2009: download PDF manuals and video instructions
    Step 7
    Clean the brake caliper fasteners. Use a wire brush.Use WD-40 spray.
    Step 8
    Unscrew the brake caliper fastening.Use a combination spanner #13.Use a combination spanner #15.
  7. How hard is it to do yourself: Brake Discs replacement on Mercedes W169 A 200 2.0 (169.033, 169.333) 2010 - download illustrated guide
    Step 9
    Spread the brake pads.Use a crowbar.
  8. Need to know how to renew Brake Discs on MERCEDES-BENZ A-CLASS ? This free workshop manual will help you to do it yourself
    Step 10
    Remove the brake caliper.
    AUTODOC recommends:
    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.
  9. Changing of Brake Discs on Mercedes W169 2012 won't be an issue if you follow this illustrated step-by-step guide
    Step 11
    Remove the brake pads.
  10. MERCEDES-BENZ A-CLASS A 200 2.0 Turbo (169.034, 169.334) Brake Discs replacement: online guides and video tutorials
    Step 12
    Clean the brake caliper bracket fasteners. Use a wire brush.Use WD-40 spray.
  11. Replacing Brake Discs on Mercedes W169 2005 A 180 CDI 2.0 (169.007, 169.307) by yourself
    Step 13
    Unscrew the caliper bracket fastening.Use a combination spanner #16.
  12. A-Class (W169) A 200 CDI 2.0 (169.008, 169.308) 2006 Brake Discs DIY replacement workshop manual
    Step 14
    Remove the caliper bracket
  13. How to change Brake Discs on MERCEDES-BENZ A-Class (W169) 2007 - tips and tricks
    Step 15
    Clean the brake disc fasteners.Use a wire brush.Use WD-40 spray.
  14. Step-by-step recommendations for DIY replacement Mercedes W169 2008 A 200 CDI 2.0 (169.008, 169.308) Brake Discs
    Step 16
    Unscrew the brake disc fasteningUse Torx T30.Use a ratchet wrench.
  15. DIY replacement of Brake Discs on MERCEDES-BENZ A-Class (W169) A 170 1.7 (169.032, 169.332) 2009 is not an issue anymore with our step-by-step tutorial
    Step 17
    Remove the brake disc.
  16. How to change Brake Discs on Mercedes W169 2004 - free PDF and video manuals
    Step 18
    Clean the hub.Use a wire brush.
    Step 19
    Treat the contacting surface.Use copper grease.
  17. How to replace MERCEDES-BENZ A-Class (W169) A 180 CDI 2.0 (169.007, 169.307) 2005 Brake Discs - step-by-step manuals and video guides
    Step 20
    Move the parking brake shoes against the drum.Use a crowbar.
  18. Mercedes W169 A 150 1.5 (169.031, 169.331) 2006 Brake Discs replacement: free workshop manuals
    Step 21
    Install the brake disc.
  19. Changing Brake Discs on MERCEDES-BENZ A-Class (W169) A 160 CDI 2.0 (169.006, 169.306) 2007 by yourself
    Step 22
    Tighten the brake disc fastening.Use Torx T30.Use a torque wrench.Tighten it to 9 Nm torque.
  20. How to remove MERCEDES-BENZ A-CLASS A 200 CDI 2.0 (169.008, 169.308) 2008 Brake Discs - online easy-to-follow instructions
    Step 23
    Clean the brake caliper bracket from dirt and dust.Use a wire brush.Use a brake cleaner.
    AUTODOC recommends:
    After applying the spray, wait a few minutes.
  21. How to replace Brake Discs on MERCEDES-BENZ A-Class (W169) 2009: download PDF manuals and video instructions
    Step 24
    Remove the guide pins from the brake caliper.
    Step 25
    Clean old grease and rust stains, if there are any, from the caliper guide pins and guide pin boots.
    Step 26
    Treat the brake caliper guide pins.Use the brake caliper guide pin grease.Screw in the guide pins.
  22. How hard is it to do yourself: Brake Discs replacement on Mercedes W169 A 200 2.0 (169.033, 169.333) 2010 - download illustrated guide
    Step 27
    Treat the fastening bolts.Use a sealant.
    Step 28
    Install the brake caliper bracket
  23. Need to know how to renew Brake Discs on MERCEDES-BENZ A-CLASS ? This free workshop manual will help you to do it yourself
    Step 29
    Tighten the brake caliper bracketUse a combination spanner #16.Use a torque wrench.Tighten it to 70 Nm torque.
    Step 30
    Install the brake pads.
  24. Changing of Brake Discs on Mercedes W169 2012 won't be an issue if you follow this illustrated step-by-step guide
    Step 31
    Treat the brake caliper piston.Use a brake cleaner.
    AUTODOC recommends:
    After applying the spray, wait a few minutes.
    Step 32
    Press in the brake caliper piston.Use brake caliper wind back tool.
  25. MERCEDES-BENZ A-CLASS A 200 2.0 Turbo (169.034, 169.334) Brake Discs replacement: online guides and video tutorials
    Step 33
    Install the brake caliper and fix it.Use a combination spanner #13.Use a combination spanner #15.Use a torque wrench.Tighten it to 35 Nm torque.
  26. Replacing Brake Discs on Mercedes W169 2005 A 180 CDI 2.0 (169.007, 169.307) by yourself
    Step 34
    Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
  27. A-Class (W169) A 200 CDI 2.0 (169.008, 169.308) 2006 Brake Discs DIY replacement workshop manual
    Step 35
    Clean the brake disk surface.Use a brake cleaner.
    AUTODOC recommends:
    After applying the spray, wait a few minutes.
  28. How to change Brake Discs on MERCEDES-BENZ A-Class (W169) 2007 - tips and tricks
    Step 36
    Install the wheel.
    AUTODOC recommends:
    To avoid injury, hold up the wheel when screwing in the fastening bolts.
  29. Step-by-step recommendations for DIY replacement Mercedes W169 2008 A 200 CDI 2.0 (169.008, 169.308) Brake Discs
    Step 37
    Screw in the wheel bolts.Use wheel impact socket #17.
  30. DIY replacement of Brake Discs on MERCEDES-BENZ A-Class (W169) A 170 1.7 (169.032, 169.332) 2009 is not an issue anymore with our step-by-step tutorial
    Step 38
    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.
  31. How to change Brake Discs on Mercedes W169 2004 - free PDF and video manuals
    Step 39
    Remove the jacks and chocks.
    AUTODOC recommends:
    Check the brake fluid level in the expansion tank and refill if necessary.
  32. How to replace MERCEDES-BENZ A-Class (W169) A 180 CDI 2.0 (169.007, 169.307) 2005 Brake Discs - step-by-step manuals and video guides
    Step 40
    Tighten the brake fluid reservoir cap. Without starting the engine, press the brake pedal several times until you feel significant resistance.
  33. Mercedes W169 A 150 1.5 (169.031, 169.331) 2006 Brake Discs replacement: free workshop manuals
    Step 41
    Close the hood.
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DIY MERCEDES-BENZ A-Class (W169) Brake Discs replacement - online guide
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