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Use when and where the vibration is felt to separate brake torque variation from wheel, hub, tire, steering, and suspension causes.
intermediateA soft, spongy, low, or sinking pedal can reflect hydraulic leakage or air, master-cylinder or control faults, mechanical adjustment or flex, and other foundation-brake concerns. Braking safety comes before diagnosis.
professional recommendedA pedal that suddenly feels hard or requires much more effort can indicate loss of brake assist, a vacuum/electrical control concern, or another braking fault. Secure the vehicle and verify the exact assist system before driving or replacing parts.
professional recommendedBrake squeal can come from friction-surface behavior, hardware contact, contamination, temperature, or a dragging component. Separate an intermittent noise from signs of unsafe braking before choosing a repair.
intermediateUse speed, braking, acceleration, road surface, and steering input to separate wheel/tire, brake, hub, axle, suspension, and steering causes.
intermediateGrinding or scraping during braking can indicate friction-material, hardware, rotor/drum, shield, bearing, or debris concerns. Braking performance and heat determine whether the vehicle should be driven at all.
professional recommendedReduced braking, unusually long stopping, or a vehicle that will not stop normally is a stop-driving condition. Secure the vehicle first, then separate hydraulic, assist, friction, mechanical, and control-system evidence with qualified service information.
professional recommendedThe lamp may indicate an applied parking brake, low fluid, hydraulic concern, or another vehicle-specific brake-system condition. The symbol alone cannot prove the brakes are safe.
Stop and assessThe anti-lock braking system has reported a fault or has been disabled. Base braking may behave differently, and the exact effect depends on the vehicle and any other warning lamps.
Assess promptlyAI guidance is separate from verified IAR sources.
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