How to Replace the Front Brake Pads on a Mercedes 300 SE

1. Loosen the lug nuts on each front wheel slightly with the tire iron, turning them no more than 1/2 turn each. Firmly apply the parking brake. Slide the jack under the frame on one side of the front end and lift until the tire has cleared the ground. Unscrew the lug nuts the rest of the way and pull the wheel off.
2. Unbolt and the brake caliper with a socket wrench and remove it from the rotor. Hold it securely to prevent excess stress being placed on the brake line. Work a flat-head screwdriver behind the old pads and pry them out.
3. Place the new brake pads inside the caliper and press them all the way to the back of the housing. Make sure the tabs are firmly secured within the inset. Replace the caliper, tightening the bolts that were previously removed.
4. Reinstall the wheel and torque down the lug nuts. Lower the vehicle and finish tightening the lug nuts. Perform the same procedure on the other front wheel.