Front Brake Pads, S4 And S6: Removing
-- Remove wheels.
-- Mark positions of brake pads that are to be used again.
Install again in same place, to ensure uniform braking.
-- Secure brake disc on wheel hub with a wheel bolt.
-- Remove both Torx® bolts for outer brake pads.
Brake fluid is poisonous and must never be siphoned by mouth through a hose. If brake fluid contacts eyes or skin, flush or wash adequately to prevent irritation. Get medical attention if necessary.
- Extract part of the brake fluid from the brake fluid reservoir before pushing back the pistons.
- Use the bleeder bottle or a plastic bottle, which is used only for brake fluid, for extracting the fluid. Otherwise, particularly if the brake fluid has been topped up in the meantime, brake fluid may flow out and cause damage.
-- Press piston back in brake caliper housing by inserting screwdriver in floating frame and pressing firmly to outside.
-- Remove outer brake pad by pressing brake pads back from brake caliper with screwdriver.
-- Disconnect harness connector by pressing spring (right arrow).
-- Remove brake pad wear indicator wire from brake caliper bracket (left arrow).
-- Carefully lift holding strap up slightly from lower part of connector with screwdriver, then turn 90° to right or left and remove from bracket.
-- Press caliper floating frame back forcefully in direction shown (arrow) to stop.
-- Carefully pry brake pads out of piston with screwdriver and remove from brake caliper housing
Before installing new brake pads, thoroughly clean brake caliper housing. Pay special attention to removing adhesive film residue caused by the outer brake pad backing plate.