Brake Defects Under Wisconsin Lemon Law

Brake-system defects almost always qualify under § 218.0171(1)(f) as substantial impairment of safety.

Common qualifying brake defects

• ABS failure — categorical safety issue (critical in Wisconsin winter ice/snow).
• Brake-pedal sinks to floor.
• Brake fade.
• Brake noise (grinding, squealing).
• Regen brake failure on EVs.
• Parking-brake failure.
• Electronic-parking-brake malfunction.
• ABS module warning lights.

Wisconsin winter brake factors

Wisconsin road salt is among the most aggressive in the country:

• Brake line corrosion — winter salt causes premature brake line failure.
• ABS sensor moisture/salt intrusion.
• Caliper sliders rust-frozen by salt exposure.
• ABS critical for ice/snow stopping.

TSB / recall overlay

Brake defects are frequently subject to TSBs and recalls.

How thresholds apply

Same § 218.0171(1)(h) thresholds.

What strengthens a brake-defect claim

• Symptom consistent across visits.
• TSB / recall pattern.
• Dashboard warning lights documented.
• Salt-corrosion correlation documented for Wisconsin-specific failures.

What weakens a brake-defect claim

• Worn pads / rotors from normal use.
• Aftermarket brake components.
• Owner-induced damage.
• Independent-mechanic visits.

Bottom line

Brake defects are strong Wisconsin cases. The 30-day clock + automatic doubling mechanism produces strong outcomes for prevailing consumers.

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