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How to change front brake discs on Mercedes W204 – 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 Saloon (W204) C 250 CDI 4-matic (204.082), MERCEDES-BENZ C-Class Saloon (W204) C 200 (204.048), MERCEDES-BENZ C-Class Saloon (W204) C 180 Kompressor (204.046), MERCEDES-BENZ C-Class Saloon (W204) C 200 Kompressor (204.041), MERCEDES-BENZ C-Class Saloon (W204) C 230 (204.052), MERCEDES-BENZ C-Class Saloon (W204) C 280 (204.054), MERCEDES-BENZ C-Class Saloon (W204) C 230 4-matic (204.085), MERCEDES-BENZ C-Class Saloon (W204) C 280 4-matic (204.081), MERCEDES-BENZ C-Class Saloon (W204) C 180 Kompressor (204.044, 204.045), MERCEDES-BENZ C-Class Saloon (W204) C 250 CDI (204.003), MERCEDES-BENZ C-Class Saloon (W204) C 220 CDI (204.002), MERCEDES-BENZ C-Class Saloon (W204) C 250 CGI (204.047), MERCEDES-BENZ C-Class Saloon (W204) C 300 (204.054), MERCEDES-BENZ C-Class Saloon (W204) C 300 4-matic (204.081), MERCEDES-BENZ C-Class Saloon (W204) C 180 CGI (204.049), MERCEDES-BENZ C-Class Saloon (W204) C 200 CGI (204.048), MERCEDES-BENZ C-Class Saloon (W204) C 220 CDI (204.008), MERCEDES-BENZ C-Class Saloon (W204) C 220 CDI 4-matic (204.084), MERCEDES-BENZ C-Class Saloon (W204) C 220 CDI (204.002) … View more
The steps may slightly vary depending on the car design.
MERCEDES-BENZ C-Class Saloon (W204) C 250 CDI 4-matic (204.082), MERCEDES-BENZ C-Class Saloon (W204) C 200 (204.048), MERCEDES-BENZ C-Class Saloon (W204) C 180 Kompressor (204.046), MERCEDES-BENZ C-Class Saloon (W204) C 200 Kompressor (204.041), MERCEDES-BENZ C-Class Saloon (W204) C 230 (204.052), MERCEDES-BENZ C-Class Saloon (W204) C 280 (204.054), MERCEDES-BENZ C-Class Saloon (W204) C 230 4-matic (204.085), MERCEDES-BENZ C-Class Saloon (W204) C 280 4-matic (204.081), MERCEDES-BENZ C-Class Saloon (W204) C 180 Kompressor (204.044, 204.045), MERCEDES-BENZ C-Class Saloon (W204) C 250 CDI (204.003), MERCEDES-BENZ C-Class Saloon (W204) C 220 CDI (204.002), MERCEDES-BENZ C-Class Saloon (W204) C 250 CGI (204.047), MERCEDES-BENZ C-Class Saloon (W204) C 300 (204.054), MERCEDES-BENZ C-Class Saloon (W204) C 300 4-matic (204.081), MERCEDES-BENZ C-Class Saloon (W204) C 180 CGI (204.049), MERCEDES-BENZ C-Class Saloon (W204) C 200 CGI (204.048), MERCEDES-BENZ C-Class Saloon (W204) C 220 CDI (204.008), MERCEDES-BENZ C-Class Saloon (W204) C 220 CDI 4-matic (204.084), MERCEDES-BENZ C-Class Saloon (W204) C 220 CDI (204.002) … View more
The steps may slightly vary depending on the car design.
How to change front brake discs on MERCEDES W204 [TUTORIAL AUTODOC]

All the parts you need to replace – Brake Discs for C-Class Saloon (W204) and other MERCEDES-BENZ models
Alternative products

Wire brush
Nylon cleaning brush
WD-40 spray
Electronic spray
All-purpose cleaning spray
Brake cleaner
Anti-squeal paste
Ceramic grease
Torque wrench
Combination spanner #17
Combination spanner #18
Drive socket # 13
HEX bit no.H5
Wheel impact socket #17
Ratchet wrench
Impact screwdriver
Long nose pliers
Brake caliper wind back tool
Crow bar
Wheel chock
AUTODOC recommends:
- Replace the brake disks on the car Mercedes W204 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 W204 – should be done with the engine switched off.
Carry out replacement in the following order:
- Step 1
Open 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 4
Raise the car.Replacement: brake discs – Mercedes W204. 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 W204 - 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 discs – Mercedes W204. AUTODOC recommends: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 fasteners. Use a wire brush. Use WD-40 spray. - Step 15
Unscrew the brake caliper bracket fasteners. Use a combination spanner #18. - Step 16
Remove the fastening bolts. - Step 17
Remove the caliper bracket. - Step 18
Clean the brake disc fastener. Use a wire brush. Use WD-40 spray. - Step 19
Unscrew the brake disc fastening. Use HEX No.H5. Use an impact screwdriver. - Step 20
Remove the fastening bolt. - Step 21
Remove the brake disc. - Step 22
Clean the hub. Use a wire brush. Use all-purpose cleaning spray. - Step 23
Treat the contacting surface. Use ceramic grease. - Step 24
Install the brake disc. - Step 25
Install the fastening bolt. - Step 26
Tighten the brake disc fastening. Use HEX No.H5. Use a torque wrench. Tighten it to 10 Nm torque. - Step 27
Clean the brake caliper bracket from dirt and dust. Use a wire brush. Use a brake cleaner.AUTODOC recommends:Replacement: brake discs – Mercedes W204. After applying the spray, wait a few minutes.Check the brake caliper bracket, brake caliper guide pins and boots. Clean them. Replace, if necessary.
Comments –
2
- @user_286355405.09.2024 15:25MemberI see a copper looking color on the bolts. What are you coating those bolts thread with? Also, the brake pads look like they have some anti-squeal paste on the ends, what are you using? Do any of the bolts need thread locker?
@Graziana Venturi06.09.2024 06:39@user_ModeratorHello! We used copper grease https://www.autodoc.co.uk/lnk-28689194 and anti-squeak https://www.autodoc.co.uk/lnk-20939798 grease. The repair handbook for the vehicle you own will have more detailed information regarding the necessity of using thread locker.
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