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Maryland · Article Updated May 24, 2026

Electrical Defects Under Maryland Lemon Law

Electrical system failures — battery drain, module failure, warning lights — under Maryland § 14-1502.

Electrical defects are increasingly common as vehicles become more software-dependent. Maryland’s Lemon Law (§ 14-1502) covers electrical nonconformities that substantially impair use, market value, or safety.

Common electrical failure modes

  • Phantom battery drain — battery dies overnight from parasitic load.
  • Body Control Module (BCM) failure.
  • Powertrain Control Module (PCM) failure.
  • Alternator failure — premature.
  • Wiring harness chafing — recall-worthy.
  • Headlight / DRL failures.
  • Sensor failures — recurring DTCs without root cause.
  • Multi-system warning lights.

Brand-specific patterns

  • Tesla 12V battery — premature failure.
  • Ford SYNC — module failures.
  • Subaru EyeSight — sensor calibration drift.
  • Stellantis UConnect — module reset.
  • GM CUE / IntelliLink — touchscreen failure.
  • Audi MMI / VW MIB — system lockup.
  • BMW iDrive — module replacement cycles.

Why electrical defects qualify

  1. Cumulative attempts — diagnosing electrical issues often takes 4+ visits.
  2. Safety implications — many systems are safety-critical (ABS, airbag, traction control).
  3. Market value impairment — electrical issues plague resale value.

Maryland climate considerations

  • Hot humid summers — connector corrosion, electronics overheating.
  • Coastal salt — Eastern Shore / Chesapeake Bay vehicle connector corrosion.
  • Cold winters — battery / alternator stress.

Bottom line

Electrical defects qualify under § 14-1502 when they substantially impair use, market value, or safety.

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