Recommended replacement interval for the part category Brake disc : 50000 km

Important!

This replacement procedure can be used for:
MERCEDES-BENZ B-Class (W245) B 170 NGT (245.233), MERCEDES-BENZ B-Class (W245) B 180 NGT (245.233), MERCEDES-BENZ B-Class (W245) B 180 CDI (245.207), MERCEDES-BENZ B-Class (W245) B 200 CDI (245.208), MERCEDES-BENZ B-Class (W245) B 200 TURBO (245.234), MERCEDES-BENZ B-Class (W245) B 200 CDI (245.208) … View more

The steps may slightly vary depending on the car design.

How to change front brake discs on MERCEDES-BENZ B200 (W245) [TUTORIAL AUTODOC]

Alternative products

Brake disc

Replacement: brake discs – Mercedes W245. Tools you need:

                      Wire brush
                    
                      WD-40 spray
                    
                      Brake cleaner 
                    
                      Copper grease 
                    
                      Combination spanner #17
                    
                      Torx bit T30
                    
                      Drive socket # 13 
                    
                      Drive socket # 18 
                    
                      Wheel impact socket #H12
                    
                      Ratchet wrench
                    
                      Torque wrench
                    
                      Tap wrench
                    
                      Brake caliper wind back tool
                    
                      Impact screwdriver
                    
                      Crow bar
                    
                      Wheel chock

Buy tools

Replacement: brake discs – Mercedes W245. AUTODOC recommends:

Replace the brake disks on the car Mercedes W245 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 W245. Use the following procedure:

Step 1

Open the bonnet. Unscrew the brake fluid reservoir cap.
Step 2

Secure the wheels with chocks.
Step 3

Loosen the wheel mounting bolts. Use wheel impact socket #H12.
Step 4

Raise the front of the car and secure on supports.
Step 5

Unscrew the wheel bolts.

Replacement: brake discs – Mercedes W245. Tip:
To avoid injury, hold up the wheel when unscrewing the bolts.
Step 6

Remove the wheel.
Step 7

Clean the brake caliper fasteners. Use a wire brush. Use WD-40 spray.
Step 8

Disconnect the brake pad wear sensor plug. Use a crowbar.

Replacement: brake discs – Mercedes W245. AUTODOC recommends:
Some cars are not equipped with the brake pad wear sensor.
Step 9

Spread the brake pads. Use a crowbar.

Step 10

Unscrew the brake caliper fastening. Use a drive socket #13. Use a ratchet wrench.
Step 11

Remove the brake caliper.

Replacement: brake discs – Mercedes W245. 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 12

Remove the brake pads.
Step 13

Clean the brake caliper bracket fasteners. Use a wire brush. Use WD-40 spray.
Step 14

Unscrew the caliper bracket fastening. Use a drive socket #18. Use a tap wrench. Use a ratchet wrench.
Step 15

Remove the caliper bracket.
Step 16

Clean the brake disc fasteners. Use a wire brush. Use WD-40 spray.

Step 17

Unscrew the brake disc fastening. Use Torx T30. Use an impact screwdriver.

Step 18

Remove the brake disc.
Step 19

Clean the hub. Use a wire brush. Treat the contacting surface. Use copper grease.
Step 20

Install the brake disc.
Step 21

Tighten the brake disc fastening. Use Torx T30. Use a torque wrench. Tighten it to 9 Nm torque.
Step 22

Clean the brake caliper bracket from dirt and dust. Use a wire brush. Use a brake cleaner.

AUTODOC recommends:
Replacement: brake discs – Mercedes W245. After applying the spray, wait a few minutes.
Step 23

Install the brake caliper bracket.
Step 24

Tighten the brake caliper bracket. Use a drive socket #18. Use a torque wrench. Tighten it to 115 Nm torque.
Step 25

Treat the brake caliper piston. Use a brake cleaner.

Replacement: brake discs – Mercedes W245. Tip from AUTODOC:
After applying the spray, wait a few minutes.
Step 26

Press in the brake caliper piston. Use brake caliper wind back tool.
Step 27

Install the brake pads.
Step 28

Connect the brake pad wear sensor plug.
Step 29

Install the brake caliper and fix it. Use a drive socket #13. Use a combination spanner #17. Use a torque wrench. Tighten it to 35 Nm torque.
Step 30

Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 31

Clean the brake disk surface. Use a brake cleaner.

AUTODOC recommends:
Replacement: brake discs – Mercedes W245. After applying the spray, wait a few minutes.
Step 32

Install the wheel.

Replacement: brake discs – Mercedes W245. Tip from AUTODOC experts:
To avoid injury, hold up the wheel when screwing in the fastening bolts.
Step 33

Screw in the wheel bolts. Use wheel impact socket #H12.
Step 34

Lower the car and working in a cross order, tighten the wheel bolts. Use wheel impact socket #H12. Use a torque wrench. Tighten it to 130 Nm torque.
Step 35

Remove the jacks and chocks.

AUTODOC recommends:
Important! Replacement: brake discs – Mercedes W245. Check the brake fluid level in the reservoir and top up if necessary.
Step 36

Tighten the brake fluid reservoir cap.

Replacement: brake discs – Mercedes W245. AUTODOC recommends:
Without starting the engine, press the brake pedal several times until you feel significant resistance.
Step 37

Close the hood.

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