Electrical Defects in Kentucky Lemon Law Cases

Modern vehicles are rolling computers — over 100 ECUs in a typical late-model vehicle. Electrical defects (parasitic battery drain, alternator failure, BCM failures, wiring-harness issues) qualify under KY’s § 367.840 substantial-impairment standard.

Why electrical defects qualify

• Use — vehicle won’t start, won’t charge, modules fail intermittently.
• Value — documented electrical issues substantially reduce resale.
• Safety — random electronics shutdowns at highway speed.

Common electrical defect patterns

Parasitic battery drain

• Dead battery overnight, premature battery replacement.
• KY summer heat (Louisville, Lexington, Bowling Green) shortens battery life.

Alternator / charging system failure

• Battery warning light, electrical brownouts, dimming lights.

BCM (Body Control Module) failures

• Cascading electrical anomalies — power windows, door locks, lighting, security system.
• Common in: GM trucks/SUVs (some shared with Bowling Green Corvette platform), Ford F-150 / Super Duty (KTP-built), Stellantis Jeep/Ram.

Wiring-harness issues

• Intermittent electrical issues that worsen over time.
• KY winter road-salt exposure (especially Northern KY metro / Cincinnati area) accelerates connector corrosion.

Infotainment cascading failures

• Head-unit reboots, freezes, fails to recognize media devices.
• Examples: Tesla MCU2 eMMC failure, Uconnect freezes (Stellantis), Sync issues (Ford LAP/KTP-built models), Toyota infotainment (TMMK-built Camry / RAV4 Hybrid / Lexus ES).

Toyota fuel-pump electronic failures (2020 NHTSA-supervised recall)

• Stalling, no-start.
• TMMK Georgetown home-state for affected Camry / Lexus ES production.

Tesla-specific electrical issues

• MCU2 eMMC failure (NHTSA recall).
• 12V auxiliary battery failures.
• HV contactor failures.

Corvette E-Ray hybrid electrical (Bowling Green-built)

• Hybrid system integration issues.
• Charging electrical.
• New technology with potential early-production teething.

Documentation for an electrical case

• Repair orders for each attempt.
• Diagnostic codes — pull and document ALL codes.
• Photos / video of intermittent failures.
• Manufacturer-app data if available (Tesla, BMW ConnectedDrive, FordPass, MyChevrolet, Toyota App).
• Vehicle inspection report from qualified independent shop if dealer “no problem found” recurring.

Manufacturer defenses to watch

• “Aftermarket equipment” — alleging aftermarket stereo, alarm, dashcam, remote starter.
• “Owner-caused damage” — water damage, jump-start damage.
• “Intermittent / cannot duplicate” — recurring “no problem found” diagnoses themselves support § 367.842 presumption.
• “Module software updated” — but defect persists.

Bottom line

Electrical defects in modern vehicles are increasingly common and complex. The § 367.840 substantial-impairment standard is satisfied for persistent electrical issues. Home-state Toyota fuel-pump recall (TMMK), Corvette E-Ray hybrid (Bowling Green), and Ford Sync / electrical patterns (LAP/KTP) create distinctive KY exposure.

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