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I have a 2002 Toyota Avalon. Overall the car is in excellent shape, no major issues.

Recently, I have noticed the brake pedal requiring increasing pressure, but only when moving (which is obviously when I am using the brakes!)

When I come to a stop, the pedal immediately "softens" and feels less stiff. For instance, if I am going down a hill, I need to apply decent pressure to come to a stop at an intersection at the bottom. As soon as I reach the bottom of the hill, my foot will sink an inch or two down with the pedal.

Stopping distance and such are normal. I do have a little vibration when braking so I know I need to get the rotors machined or replaced, but is this pedal issue related?

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Have you had any brake work recently? –  FossilizedCarlos Apr 14 '12 at 1:25

1 Answer 1

It is possible you have a vacum issue that is effecting the brake booster.Check the hose between the booster and the engine for cracks.There is also a check valve mounted in the hose.Do you detect an engine vibration or noise if you pump the brake pedal several times while stopped and in park?With the engine off depress the brake pedal several times until it gets firm.With your foot still on the brake start the engine,does the pedal depress a little more before stopping?If not the problem may be in the booster.

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Agreed : Looks like a vacuum "issue", or just an effect of the booster fill-in time. When downhill, foot fixed on the brake pedal, released from the gas pedal, engine vacuum operates. –  hornetbzz Nov 29 at 4:18

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