Hydraulics
Master cylinder → ABS module → calipers/wheel cylinders. Pressure scales with pedal force × booster assist. Any air = soft pedal.
Brakes are the system you can't afford to get wrong. Here's the clean reference.
Most brake comebacks aren't bad parts — they're skipped steps (no slide-pin lube, no rotor finish, no break-in).
Master cylinder → ABS module → calipers/wheel cylinders. Pressure scales with pedal force × booster assist. Any air = soft pedal.
Rotor: measure runout + thickness; resurface or replace if out of spec. Caliper: clean + lube slides + dust boots intact. Pads: bed-in procedure on the test drive. Skip any step = noise or pull comeback.
Wheel-speed sensors at each corner, ABS module modulates pressure during lock-up. Most ABS lights = sensor or tone-ring, not module failure.
If the rotor is in spec (thickness + runout), resurfacing or matched-grind on a brake lathe is best practice. Below spec, replace.