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 (W168) A 140 (168.031, 168.131), MERCEDES-BENZ A-Class (W168) A 160 (168.033, 168.133), MERCEDES-BENZ A-Class (W168) A 170 CDI (168.008), MERCEDES-BENZ A-Class (W168) A 190 (168.032, 168.132), MERCEDES-BENZ A-Class (W168) A 140 (168.031, 168.131) View more

The steps may slightly vary depending on the car design.

How to change front brake discs on MERCEDES W168 [TUTORIAL AUTODOC]

video
Tools
Replacement: brake discs – Mercedes W168. Tools you might need:
Wire brush
Nylon cleaning brush
WD-40 spray
Brake cleaner
Electronic spray
Copper grease
Torque wrench
Drive socket # 12
Drive socket # 18
Torx bit T30
Wheel impact socket #17
Brake caliper wind back tool
Tap wrench
Ratchet wrench
Impact screwdriver
Round-nose pliers
Crow bar
Wheel chock
Replacement: brake discs – Mercedes W168. AUTODOC experts recommend:
  • Replace the brake disks on the car Mercedes W168 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.
  • Please note: all work on the car – Mercedes W168 – should be done with the engine switched off.
Carry out replacement in the following order:
  1. Step 1
    How to change Brake Discs on Mercedes W168 1997 - free PDF and video manuals
    Open the bonnet. Unscrew the brake fluid reservoir cap.
  2. Step 2
    Secure the wheels with chocks.
    Step 3
    How to replace MERCEDES-BENZ A-Class (W168) A 140 1.4 (168.031, 168.131) 1998 Brake Discs - step-by-step manuals and video guides
    Loosen the wheel mounting bolts. Use wheel impact socket #17.
  3. Step 4
    Mercedes W168 A 170 CDI 1.7 (168.009, 168.109) 1999 Brake Discs replacement: free workshop manuals
    Raise the front of the car and secure on supports.
  4. Step 5
    Changing Brake Discs on MERCEDES-BENZ A-Class (W168) A 170 CDI 1.7 (168.008) 2000 by yourself
    Unscrew the wheel bolts.
    AUTODOC recommends:
    Important! Hold the wheel while unscrewing the fastening bolts. Mercedes W168
  5. Step 6
    How to remove MERCEDES-BENZ A-CLASS A 190 1.9 (168.032, 168.132) 2001 Brake Discs - online easy-to-follow instructions
    Remove the wheel.
  6. Step 7
    How to replace Brake Discs on MERCEDES-BENZ A-Class (W168) 2002: download PDF manuals and video instructions
    Disconnect the brake pad wear sensor wire.
  7. Step 8
    Detach the connector of the brake pad wear sensor.
    Please note!
    Some cars are not equipped with the brake pad wear sensor.
    Step 9
    How hard is it to do yourself: Brake Discs replacement on Mercedes W168 A 160 CDI 1.7 (168.006) 2003 - download illustrated guide
    Clean the brake caliper fasteners. Use a wire brush. Use WD-40 spray.
  8. Step 10
    Need to know how to renew Brake Discs on MERCEDES-BENZ A-CLASS 2004? This free workshop manual will help you to do it yourself
    Unscrew the brake caliper fastening. Use a drive socket #12. Use a ratchet wrench.
  9. Step 11
    Changing of Brake Discs on Mercedes W168 1997 won't be an issue if you follow this illustrated step-by-step guide
    Spread the brake pads. Use a crowbar.
  10. Step 12
    MERCEDES-BENZ A-CLASS A 160 CDI 1.7 (168.007) Brake Discs replacement: online guides and video tutorials
    Remove the brake caliper.
    Replacement: brake discs – Mercedes W168. 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.
  11. Step 13
    Replacing Brake Discs on Mercedes W168 1999 A 140 1.4 (168.031, 168.131) by yourself
    Remove the brake pads.
  12. Step 14
    Remove the brake pad wear sensor from the brake pad.
    Step 15
    A-Class (W168) A 190 1.9 (168.032, 168.132) 2000 Brake Discs DIY replacement workshop manual
    Clean the brake caliper bracket fasteners. Use a wire brush. Use WD-40 spray.
  13. Step 16
    How to change Brake Discs on MERCEDES-BENZ A-Class (W168) 2001 - tips and tricks
    Unscrew the caliper bracket fastening. Use a drive socket #18. Use a tap wrench. Use a ratchet wrench.
  14. Step 17
    Step-by-step recommendations for DIY replacement Mercedes W168 2002 A 190 1.9 (168.032, 168.132) Brake Discs
    Remove the caliper bracket.
  15. Step 18
    DIY replacement of Brake Discs on MERCEDES-BENZ A-Class (W168) A 160 1.6 (168.033, 168.133) 2003 is not an issue anymore with our step-by-step tutorial
    Clean the brake disc fastener. Use a wire brush. Use WD-40 spray.
  16. Step 19
    How to change Brake Discs on Mercedes W168 1997 - free PDF and video manuals
    Unscrew the brake disc fastening. Use Torx T30. Use an impact screwdriver.
  17. Step 20
    How to replace MERCEDES-BENZ A-Class (W168) A 140 1.4 (168.031, 168.131) 1998 Brake Discs - step-by-step manuals and video guides
    Remove the brake disc.
  18. Step 21
    Mercedes W168 A 170 CDI 1.7 (168.009, 168.109) 1999 Brake Discs replacement: free workshop manuals
    Clean the hub. Use a wire brush. Treat the contacting surface. Use copper grease.
  19. Step 22
    Changing Brake Discs on MERCEDES-BENZ A-Class (W168) A 170 CDI 1.7 (168.008) 2000 by yourself
    Remove anti-corrosion grease from the new brake disk. Use a brake cleaner.
    AUTODOC recommends:
    Replacement: brake discs – Mercedes W168. After applying the spray, wait a few minutes.
  20. Step 23
    How to remove MERCEDES-BENZ A-CLASS A 190 1.9 (168.032, 168.132) 2001 Brake Discs - online easy-to-follow instructions
    Install the brake disc.
  21. Step 24
    How to replace Brake Discs on MERCEDES-BENZ A-Class (W168) 2002: download PDF manuals and video instructions
    Tighten the brake disc fastening. Use Torx T30. Use a torque wrench. Tighten it to 9 Nm torque.
  22. Step 25
    How hard is it to do yourself: Brake Discs replacement on Mercedes W168 A 160 CDI 1.7 (168.006) 2003 - download illustrated guide
    Clean the brake caliper bracket from dirt and dust. Use a wire brush. Use a brake cleaner.
    Replacement: brake discs – Mercedes W168. Tip from AUTODOC:
    After applying the spray, wait a few minutes.
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