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How to change front brake pad wear sensor on MERCEDES-BENZ C-Class Saloon (W202) – replacement guide
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Recommended replacement interval for the part category Brake pad wear sensor : 30000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ C-Class Saloon (W202) C 280 (202.029), MERCEDES-BENZ C-Class Saloon (W202) C 240 (202.026), MERCEDES-BENZ C-Class Saloon (W202) C 250 Turbo-D (202.128) … View more
The steps may slightly vary depending on the car design.
MERCEDES-BENZ C-Class Saloon (W202) C 280 (202.029), MERCEDES-BENZ C-Class Saloon (W202) C 240 (202.026), MERCEDES-BENZ C-Class Saloon (W202) C 250 Turbo-D (202.128) … View more
The steps may slightly vary depending on the car design.
This video shows the replacement procedure of a similar car part on another vehicle
All the parts you need to replace – Brake Pad Wear Sensor for C-Class Saloon (W202) and other MERCEDES-BENZ models
Brake pad wear sensor
Alternative products
Brake pad wear sensor
Wire brush
Nylon cleaning brush
WD-40 spray
Electronic spray
Brake cleaner
Anti-squeal paste
Ceramic grease
Torque wrench
Combination spanner #17
Drive socket # 13
Wheel impact socket #17
Ratchet wrench
Long nose pliers
Brake caliper wind back tool
Crow bar
Wheel chock
Replacement: brake pad wear sensor – MERCEDES-BENZ C-CLASS (W202). Tip from AUTODOC:
- The replacement procedure is identical for both brake pad wear sensors on the same axle.
- The wear sensors should be replaced together with the brake pads.
- Please note: all work on the car – MERCEDES-BENZ C-CLASS (W202) – 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 3
Loosen the wheel mounting bolts. Use wheel impact socket #17. - Step 4Raise the car.Replacement: brake pad wear sensor – MERCEDES-BENZ C-CLASS (W202). AUTODOC recommends:If you are using a jack, make sure it rests on a flat surface without any unevenness.Be sure to additionally secure the car with jack stands.Step 5
Unscrew the wheel bolts.AUTODOC recommends:Warning! To avoid injury, hold the wheel while unscrewing the fastening bolts. MERCEDES-BENZ C-CLASS (W202) - Step 6
Remove the wheel. - Step 7
Detach the connector of the brake pad wear sensor. Use long nose pliers. - Step 8
Spread the brake pads. Use a crowbar. - Step 9Clean the brake caliper fasteners. Use a wire brush. Use WD-40 spray.Step 10
Unscrew the brake caliper fasteners. Use a combination spanner #17. Use a drive socket #13. Use a ratchet wrench. - Step 11
Remove the fastening bolts. - Step 12
Remove the brake caliper.Replacement: brake pad wear sensor – MERCEDES-BENZ C-CLASS (W202). Tip: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. - Step 13
Remove the brake pads. - Step 14
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.Check the brake caliper bracket, brake caliper guide pins and boots. Clean them. Replace, if necessary. - Step 15
Treat the brake caliper piston. Use a nylon cleaning brush. Use a brake cleaner.AUTODOC recommends:Replacement: brake pad wear sensor – MERCEDES-BENZ C-CLASS (W202). After applying the spray, wait a few minutes. - Step 16
Press in the brake caliper piston. Use brake caliper wind back tool. - Step 17
Attach the new wear sensor to the new pad. - Step 18
Treat the brake pads in the area where their surface comes into contact with the brake caliper bracket. Use anti-squeal paste.AUTODOC recommends:Make sure the disc surface is clean before installing the pads. - Step 19
Install the brake pads.
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