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How to change front brake pads on Mercedes W168 – replacement guide
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Recommended replacement interval for the part category Brake pad set : 30000 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 160 CDI (168.007), 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 160 CDI (168.006), MERCEDES-BENZ A-Class (W168) A 140 (168.031, 168.131), MERCEDES-BENZ A-Class (W168) A 210 (168.035, 168.135) … View more
The steps may slightly vary depending on the car design.
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 160 CDI (168.007), 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 160 CDI (168.006), MERCEDES-BENZ A-Class (W168) A 140 (168.031, 168.131), MERCEDES-BENZ A-Class (W168) A 210 (168.035, 168.135) … View more
The steps may slightly vary depending on the car design.
How to change front brake pads on MERCEDES W168 [TUTORIAL AUTODOC]

All the parts you need to replace – Brake Pads for A-Class (W168) and other MERCEDES-BENZ models
Brake pad set
Alternative products

Wire brush
Nylon cleaning brush
WD-40 spray
Brake cleaner
Electronic spray
Copper grease
Anti-squeal paste
Torque wrench
Drive socket # 12
Wheel impact socket #17
Brake caliper wind back tool
Ratchet wrench
Round-nose pliers
Crow bar
Wheel chock
Replacement: brake pads – Mercedes W168. AUTODOC experts recommend:
- Perform the replacement of brake pads in complete set for each axis. This provides effective braking.
- The replacement procedure is identical for all brake pads on the same axle.
- Please note: all work on the car – Mercedes W168 – should be done with the engine switched off.
Carry out replacement in the following order:
- Step 1Open the bonnet. Unscrew the brake fluid reservoir cap.
- Step 2Secure the wheels with chocks.Step 3Loosen the wheel mounting bolts. Use wheel impact socket #17.
- Step 4Raise the front of the car and secure on supports.
- Step 5Unscrew the wheel bolts.AUTODOC recommends:Important! Hold the wheel while unscrewing the fastening bolts. Mercedes W168
- Step 6Remove the wheel.
- Step 7Disconnect the brake pad wear sensor wire.
- Step 8Detach the connector of the brake pad wear sensor.Please note!Some cars are not equipped with the brake pad wear sensor.
- Step 9Clean the brake caliper fasteners. Use a wire brush. Use WD-40 spray.
- Step 10Unscrew the brake caliper fastening. Use a drive socket #12. Use a ratchet wrench.
- Step 11Spread the brake pads. Use a crowbar.
- Step 12Remove the brake caliper.Replacement: brake pads – Mercedes W168. Tip from AUTODOC experts: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 13Remove the brake pads.Replacement: brake pads – Mercedes W168. AUTODOC experts recommend:Measure the brake disc thickness. Upon reaching the wear limit the part must be replaced.
- Step 14Remove the brake pad wear sensor from the brake pad.Step 15Clean the brake caliper bracket from dirt and dust. Use a wire brush. Use a brake cleaner.AUTODOC recommends:Replacement: brake pads – Mercedes W168. After applying the spray, wait a few minutes.
- Step 16Treat the brake caliper piston. Use a nylon cleaning brush. Use a brake cleaner.Replacement: brake pads – Mercedes W168. Professionals recommend:After applying the spray, wait a few minutes.
- Step 17Press in the brake caliper piston. Use brake caliper wind back tool.
- Step 18Treat the brake pads in the area where their surface comes into contact with the brake caliper bracket. Use anti-squeal paste.Replacement: brake pads – Mercedes W168. Tip from AUTODOC:Make sure the disc surface is clean before installing the pads.
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