When to replace the Brake Discs on your MERCEDES-BENZ A-CLASS
Recommended replacement interval for the part category Brake disc : 50000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ A-Class (W169) A 160 (169.031, 169.331), MERCEDES-BENZ A-Class (W169) A 160 CDI (169.006, 169.306) View more

The steps may slightly vary depending on the car design.

How to change front brake discs and brake pads MERCEDES-BENZ A W169 TUTORIAL | AUTODOC

video
All the parts you need to replace – Brake Discs for A-Class (W169) and other MERCEDES-BENZ models
Tools
Replacement: brake discs – Mercedes W169. List of the tools you'll need:
Wire brush
WD-40 spray
Brake cleaner
Copper grease
Brake caliper guide pins grease
Combination spanner #17
Drive socket # 13
Drive socket # 18
Torx bit T30
Wheel impact socket #17
Ratchet wrench
Torque wrench
Brake caliper wind back tool
Round-nose pliers
Crow bar
Wheel chock
Replacement: brake discs – Mercedes W169. Tip from AUTODOC:
  • Replace the brake disks on the car Mercedes 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.
Replacement: brake discs – Mercedes W169. Recommended sequence of steps:
  1. Step 1
    How to change Brake Discs on Mercedes W169 2004 - free PDF and video manuals
    Open the bonnet. Unscrew the brake fluid reservoir cap.
  2. Step 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
    Secure the wheels with chocks.
  3. Step 3
    Mercedes W169 A 150 1.5 (169.031, 169.331) 2006 Brake Discs replacement: free workshop manuals
    Loosen the wheel mounting bolts. Use wheel impact socket #17.
  4. Step 4
    Raise the front of the car and secure on supports.
    Step 5
    Changing Brake Discs on MERCEDES-BENZ A-Class (W169) A 160 CDI 2.0 (169.006, 169.306) 2007 by yourself
    Unscrew the wheel bolts.
    Replacement: brake discs – Mercedes W169. AUTODOC recommends:
    To avoid injury, hold up the wheel when unscrewing the bolts.
  5. Step 6
    How to remove MERCEDES-BENZ A-CLASS A 200 CDI 2.0 (169.008, 169.308) 2008 Brake Discs - online easy-to-follow instructions
    Remove the wheel.
  6. Step 7
    Disconnect the brake pad wear sensor plug. Use round-nose pliers.
    Please note!
    Some cars are not equipped with the brake pad wear sensor.
    Step 8
    How to replace Brake Discs on MERCEDES-BENZ A-Class (W169) 2009: download PDF manuals and video instructions
    Clean the brake caliper fasteners. Use a wire brush. Use WD-40 spray.
  7. Step 9
    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
    Spread the brake pads. Use a crowbar.
  8. Step 10
    Need to know how to renew Brake Discs on MERCEDES-BENZ A-CLASS 2011? This free workshop manual will help you to do it yourself
    Unscrew the brake caliper fastening. Use a combination spanner #17. Use a drive socket #13. Use a ratchet wrench.
  9. Step 11
    Changing of Brake Discs on Mercedes W169 2012 won't be an issue if you follow this illustrated step-by-step guide
    Remove the brake caliper.
    Replacement: brake discs – 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.
  10. Step 12
    MERCEDES-BENZ A-CLASS A 200 2.0 Turbo (169.034, 169.334) Brake Discs replacement: online guides and video tutorials
    Remove the brake pads. Use a crowbar.
  11. Step 13
    Remove the brake pads retaining clips. Use a crowbar.
    Step 14
    Replacing Brake Discs on Mercedes W169 2005 A 180 CDI 2.0 (169.007, 169.307) by yourself
    Clean the brake caliper bracket fasteners. Use a wire brush. Use WD-40 spray.
  12. Step 15
    A-Class (W169) A 200 CDI 2.0 (169.008, 169.308) 2006 Brake Discs DIY replacement workshop manual
    Unscrew the caliper bracket fastening. Use a drive socket #18. Use a ratchet wrench.
  13. Step 16
    Remove the caliper bracket.
    Step 17
    How to change Brake Discs on MERCEDES-BENZ A-Class (W169) 2007 - tips and tricks
    Clean the brake disc fasteners. Use a wire brush. Use WD-40 spray.
  14. Step 18
    Step-by-step recommendations for DIY replacement Mercedes W169 2008 A 200 CDI 2.0 (169.008, 169.308) Brake Discs
    Unscrew the brake disc fastening. Use Torx T30. Use a ratchet wrench.
  15. Step 19
    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
    Remove the brake disc.
  16. Step 20
    Clean the hub. Use a wire brush. Treat the contacting surface. Use copper grease.
    Step 21
    How to change Brake Discs on Mercedes W169 2004 - free PDF and video manuals
    Install the brake disc.
  17. Step 22
    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
    Tighten the brake disc fastening. Use Torx T30. Use a torque wrench. Tighten it to 9 Nm torque.
  18. Step 23
    Mercedes W169 A 150 1.5 (169.031, 169.331) 2006 Brake Discs replacement: free workshop manuals
    Clean the brake caliper bracket from dirt and dust. Use a wire brush. Use a brake cleaner.
    AUTODOC recommends:
    Replacement: brake discs – Mercedes W169. After applying the spray, wait a few minutes.
  19. Step 24
    Changing Brake Discs on MERCEDES-BENZ A-Class (W169) A 160 CDI 2.0 (169.006, 169.306) 2007 by yourself
    Remove the guide pins from the brake caliper. Clean old grease and rust stains, if there are any, from the caliper guide pins and guide pin boots.
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