DIY How to Change Rear Brake Pads W203 C-Class

Replacing the rear brake pads on a Mercedes-Benz C-Class is very easy. This guide provides step-by-step instructions on replacing the brake pads on your Mercedes-Benz C-Class. The rear brake pads are extremely easy to use. It takes longer to remove the wheel than it takes to replace the brake pads. These instructions apply to the following Mercedes-Benz W203 C-Class models.

• Mercedes-Benz C230 2003-2007 w/ Sport Package
• Mercedes-Benz C230 2003-2007 w/ Sport Package
• Mercedes-Benz C240 2001-2002 Wagon
• Mercedes-Benz C240 2003-2005 Base; Wagon
• Mercedes-Benz C280 2006-2007
• Mercedes-Benz C280 2006-2007
• Mercedes-Benz C320 2001-2002 w/ Sport Package
• Mercedes-Benz C320 2003-2005 Base; Sedan; Wagon; w/ Sport Package
• Mercedes-Benz C350 2006-2007 w/ Sport Package

Tools Required

	Jack Stands
	Hammer. Yes, you will need one.
	Pin Remover Removal Extractor Extraction Tool

Parts Required

• W203 Rear Brake pads. Ceramic Recommended 003 420 27 20 0034202720
• Wear sensors.
• Brake pad anti-squeal grease.
• Rotors (if you plan on replacing them as well).

Step-by-step DIY Instructions on How to change/replace rear brake pads.

1. Set the emergency brakes. Jack up the car using your jack. Place jack stands under the vehicle to secure it.
2. Open the hood and remove the cap from the brake fluid reservoir. This will allow the brake fluid to return to the reservoir when you press the pistons into the brake caliper. Note the location on the right top corner marked with “Brake Fluid.”

   

3. Remove the rear wheels from your Mercedes-Benz C-Class (C320, C230, C350).
4. Remove the brake pad wear sensor from the right brake pad.
5. Use a hammer to remove the pin that places the brake pads. As you extract the retaining pin, be careful not to hit the brake heat shield. If you hit the shield, you may bend it and cause it to make noise when you drive.
6. Use a screwdriver to press the brake cylinder into the caliper. 
7. Remove the old brake pads and clean the area where the brake pads make contact with the caliper. 
8.  Install the new brake pads. Apply brake grease on the area where the brake makes contact with the caliper. Install the retaining pin. Align the brake pads and install the pin by hammering it in.