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How to change front brake pads on MERCEDES-BENZ SLK (R172) – 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 SLK (R172) 200 (172.448), MERCEDES-BENZ SLK (R172) 250 (172.447) … View more
The steps may slightly vary depending on the car design.
MERCEDES-BENZ SLK (R172) 200 (172.448), MERCEDES-BENZ SLK (R172) 250 (172.447) … 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 Pads for SLK (R172) and other MERCEDES-BENZ models
Brake pad set
Alternative products

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 pads – MERCEDES-BENZ SLK (R172). Tip from AUTODOC experts:
- 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-BENZ SLK (R172) – 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 car.Replacement: brake pads – MERCEDES-BENZ SLK (R172). Tip from AUTODOC: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 5Unscrew the wheel bolts. Use wheel impact socket #17.AUTODOC recommends:Warning! To avoid injury, hold the wheel while unscrewing the fastening bolts. MERCEDES-BENZ SLK (R172)
- Step 6Remove the wheel.
- Step 7Detach the connector of the brake pad wear sensor. Use long nose pliers.
- Step 8Spread the brake pads. Use a crowbar.
- Step 9Clean the brake caliper fasteners. Use a wire brush. Use WD-40 spray.Step 10Unscrew the brake caliper fasteners. Use a combination spanner #17. Use a drive socket #13. Use a ratchet wrench.
- Step 11Remove the fastening bolts.
- Step 12Remove the brake caliper.Replacement: brake pads – MERCEDES-BENZ SLK (R172). Tip from AUTODOC: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 13Remove the brake pads.Replacement: brake pads – MERCEDES-BENZ SLK (R172). Tip:Measure the brake disc thickness. Upon reaching the wear limit the part must be replaced.
- Step 14Clean the brake caliper bracket from dirt and dust. Use a wire brush. Use a brake cleaner.AUTODOC recommends:Replacement: brake pads – MERCEDES-BENZ SLK (R172). 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 15Treat 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 16Install new brake pads.
- Step 17Treat the brake caliper piston. Use a nylon cleaning brush. Use a brake cleaner.AUTODOC recommends:After applying the spray, wait a few minutes.
- Step 18Press in the brake caliper piston. Use brake caliper wind back tool.
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