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Home >> Jeep >> 2001 >> Wrangler Sport, Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System - TEVES Mark 20 >> Operation >> Performance Characteristics

Performance Characteristics

When ignition is turned on, a popping sound and slight brake pedal movement may be noticed. When vehicle is first driven off, a humming sound may be heard and/or felt when vehicle reaches approximately 6 MPH. These conditions are normal.

During an ABS stop, groaning, popping and/or ticking may be heard inside passenger compartment. When ABS turns at end of an ABS stop, a slight pedal drop may be felt. Stopping on a bumpy road may cause ABS to activate because of wheel hop caused by bumps.

Some wheel slip is desired for maximum braking performance. Wheel slip may be heard as a "chirping" sound depending on road surface. Do not interpret this sound as total wheel lock-up. The "chirping" sound is considered normal under most conditions. Light, patched tire marks may be left on pavement after an anti-lock stop.