EV-Specific Defects in Florida Lemon Law Cases

Florida is a growing EV market, and EV-specific defects have become an increasing share of Florida Lemon Law cases. EVs introduce defect categories that don’t exist in internal-combustion vehicles — battery degradation, charging-system failures, drive-unit replacements, BMS software bugs. Most of these clearly satisfy the substantial-impairment test when they persist.

Battery and range issues

Premature range loss

EV batteries naturally degrade, but excessive range loss is a Florida Lemon Law issue. Manufacturers publish capacity-retention warranties (typically 70% capacity for 8 years/100,000 miles). When measured capacity falls below the warranty floor — and the manufacturer refuses battery replacement — you have a claim.

Battery management system (BMS) defects

Software bugs causing inaccurate range estimates, “bricking,” charging failures, sudden range reductions after software updates.

Phantom drain

Excessive battery drain when parked. Common causes: faulty 12V batteries, software bugs, sensor malfunctions.

Charging system failures

DC fast-charging issues

Vehicles unable to accept full DC fast-charge rate, charging failures at specific networks, charge-port hardware failures.

AC home charging failures

Onboard chargers can fail, limiting home charging or preventing charging entirely.

Charging-port hardware

Charging-port latches that fail, ports that don’t release the connector. Florida’s coastal humidity exacerbates corrosion issues. Long parts-order lead times → 30-day cumulative out-of-service presumption (60 for RVs) often met.

Drive-unit issues

EV drive units (motor + single-speed gearbox + inverter) can fail with whining noises, vibration, reduced power, or outright failure. Tesla Model S and X early production had widely documented drive-unit failures.

High-voltage system safety issues

High-voltage warning lights, sudden vehicle shutdowns, sparking during charging, thermal events. These are serious nonconformities that substantially impair use and safety; once the § 681.104(3) threshold (three attempts, or 30/60 days out of service) is met, they make for strong claims. Florida has no reduced-attempt safety rule, so the standard threshold applies.

Regenerative braking issues

Software bugs in regen-to-friction brake blending. Crosses over into brake-system defect territory.

Software-update repair attempts

EVs are intensely software-dependent. Many EV defects are addressed via over-the-air (OTA) software updates. Each OTA update targeting a specific defect counts as a repair attempt under § 681.104, even without a dealer visit.

Tesla in particular has produced extensive case law on OTA updates as repair attempts.

What manufacturers typically argue

• “Battery degradation is normal.”
• “The latest software fixed it.”
• “OTAs aren’t ‘repair attempts.’”
• “The buyer’s charging habits caused the issue.”

FDUTPA willfulness for EV cases

Major EV manufacturers issue substantial TSBs for software and battery issues. When a TSB exists and the manufacturer continued to refuse refund, FDUTPA “knowing” violation and damages are in play.

What you should do

1. Document each repair attempt — dealer visits AND OTA updates.
2. Screenshot range estimates and battery capacity over time.
3. Save charging-session data.
4. Send certified-mail § 681.104(1)(a) notice.
5. Get a Florida lemon-law attorney involved.

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