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How to change front brake discs on MERCEDES-BENZ C-Class Coupe (CL203) – replacement guide
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Recommended replacement interval for the part category Brake disc : 50000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ C-Class Coupe (CL203) C 180 (203.735), MERCEDES-BENZ C-Class Coupe (CL203) C 200 Kompressor (203.745), MERCEDES-BENZ C-Class Coupe (CL203) C 220 CDI (203.706), MERCEDES-BENZ C-Class Coupe (CL203) C 230 Kompressor (203.747), MERCEDES-BENZ C-Class Coupe (CL203) C 180 Kompressor (203.746), MERCEDES-BENZ C-Class Coupe (CL203) C 200 Kompressor (203.742), MERCEDES-BENZ C-Class Coupe (CL203) C 230 Kompressor (203.740), MERCEDES-BENZ C-Class Coupe (CL203) C 200 CGI Kompressor (203.743), MERCEDES-BENZ C-Class Coupe (CL203) C 200 CDI (203.707), MERCEDES-BENZ C-Class Coupe (CL203) C 220 CDI (203.708), MERCEDES-BENZ C-Class Coupe (CL203) C 160 Kompressor (203.730), MERCEDES-BENZ C-Class Coupe (CL203) C 220 CDI … View more
The steps may slightly vary depending on the car design.
MERCEDES-BENZ C-Class Coupe (CL203) C 180 (203.735), MERCEDES-BENZ C-Class Coupe (CL203) C 200 Kompressor (203.745), MERCEDES-BENZ C-Class Coupe (CL203) C 220 CDI (203.706), MERCEDES-BENZ C-Class Coupe (CL203) C 230 Kompressor (203.747), MERCEDES-BENZ C-Class Coupe (CL203) C 180 Kompressor (203.746), MERCEDES-BENZ C-Class Coupe (CL203) C 200 Kompressor (203.742), MERCEDES-BENZ C-Class Coupe (CL203) C 230 Kompressor (203.740), MERCEDES-BENZ C-Class Coupe (CL203) C 200 CGI Kompressor (203.743), MERCEDES-BENZ C-Class Coupe (CL203) C 200 CDI (203.707), MERCEDES-BENZ C-Class Coupe (CL203) C 220 CDI (203.708), MERCEDES-BENZ C-Class Coupe (CL203) C 160 Kompressor (203.730), MERCEDES-BENZ C-Class Coupe (CL203) C 220 CDI … 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 Discs for C-Class Coupe (CL203) and other MERCEDES-BENZ models
Brake disc
Alternative products

Wire brush
Nylon cleaning brush
WD-40 spray
Brake cleaner
Copper grease
Torque wrench
Drive socket # 12
Drive socket # 18
Torx bit T30
Wheel impact socket #17
Brake caliper wind back tool
Ratchet wrench
Tap wrench
Impact screwdriver
Crow bar
Round-nose pliers
Wheel chock
Replacement: brake discs – MERCEDES-BENZ C-CLASS Coupe (CL203). Tip from AUTODOC:
- Replace the brake disks on the car MERCEDES-BENZ C-CLASS Coupe (CL203) 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-BENZ C-CLASS Coupe (CL203). Recommended sequence of steps:
- 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.Replacement: brake discs – MERCEDES-BENZ C-CLASS Coupe (CL203). Tip:To avoid injury, hold up the wheel when unscrewing the bolts.
- Step 6Remove the wheel.
- Step 7Detach the connector of the brake pad wear sensor. Use round-nose pliers.
- Step 8Clean the brake caliper fasteners. Use a wire brush. Use WD-40 spray.
- Step 9Unscrew the brake caliper fastening. Use a drive socket #12. Use a ratchet wrench.
- Step 10Spread the brake pads. Use a crowbar.
- Step 11Remove the brake caliper.Replacement: brake discs – MERCEDES-BENZ C-CLASS Coupe (CL203). 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.
- Step 12Remove the brake pads.
- Step 13Clean the brake caliper bracket fasteners. Use a wire brush. Use WD-40 spray.
- Step 14Unscrew the caliper bracket fastening. Use a drive socket #18. Use a tap wrench. Use a ratchet wrench.
- Step 15Remove the caliper bracket.
- Step 16Clean the brake disc fasteners. Use a wire brush. Use WD-40 spray.
- Step 17Unscrew the brake disc fastening. Use Torx T30. Use an impact screwdriver.
- Step 18Remove the brake disc.
- Step 19Clean the hub. Use a wire brush. Treat the contacting surface. Use copper grease.
- Step 20Install the brake disc.
- Step 21Tighten the brake disc fastening. Use Torx T30. Use a torque wrench. Tighten it to 9 Nm torque.
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