A pulsing brake pedal is usually a sign of warped brake discs. Here’s what to check first on your Sequoia and whether it’s safe to keep driving.
If your Sequoia's brake pedal starts pulsing or vibrating when you apply the brakes, the prime suspect is almost always a pair of warped brake discs (rotors). Over time, heavy braking, heat, and sudden cooling can cause the rotor surface to develop uneven thickness — usually called 'lateral runout' or 'thickness variation.' That uneven surface gives you that rhythmic pulse through the pedal as the brake pads pass over the high and low spots. On a heavy vehicle like the Sequoia III, this is more common than you might think, especially if you've done towing or mountain driving.
