Brake pedal travel — check
Note: On models with electrically adjustable pedals, perform the following steps with the pedals set to their lowest position (closest to the floor).
1. The brake pedal travel should be checked if the pedal seems to go too low. You’ll need a tape measure, yardstick or ruler for this procedure.
2. Depress the brake pedal several times to deplete the pressure in the accumulator (hydraulic booster) or a few times to remove vacuum (vacuum booster).
3. Measure the position of the pedal at rest. You can either measure from the floor to the pedal or from the pedal to the steering wheel. Record your reading.
4. Now, depress the pedal (exerting approximately 70 lbs. of force) and measure how far the pedal has traveled. Compare your findings with the measurement listed in this Chapter’s Specifications.
5. If the pedal travel is excessive, check for air in the system (bleed the brakes — see Brake hydraulic system — bleeding). A failed seal in the master cylinder could also cause excessive pedal travel.