Hyundai lemon law claims in California are filed under the Song-Beverly Act against Hyundai Motor America. Hyundai and Genesis participate in BBB Auto Line. The most significant pattern defects involve the Theta II 2.0L and 2.4L gasoline engines (Sonata, Santa Fe, Tucson, Elantra) — connecting-rod bearing failures causing engine seizures, subject of recalls and major settlements. Other common defects include Ioniq 5/6 ICCU (Integrated Charging Control Unit) failures, Bluelink connectivity outages, anti-theft software vulnerabilities, and SmartSense AEB issues.
Notable Hyundai Pattern Defects
- Theta II 2.0L and 2.4L engines. Rod-bearing failure leading to engine seizure on Sonata, Santa Fe Sport, Tucson, Elantra (2011–2019); recalls and class settlements; major source of California lemon claims.
- Ioniq 5 / Ioniq 6 ICCU failures. Integrated Charging Control Unit failures causing reduced charging or no charge condition.
- 12V battery drain. Across multiple models.
- Anti-theft software. Vulnerability to keyless theft on 2011–2022 vehicles without immobilizer.
- Bluelink connectivity. Outages and feature regressions.
- SmartSense AEB. Forward collision-avoidance false activations.
- Lambda V6 oil consumption.
- Genesis G70/G80/G90. Various luxury-platform defects.
- Palisade transmission issues.
Models Covered
- Hyundai: Accent, Elantra, Sonata, Venue, Kona, Tucson, Santa Fe, Palisade, Santa Cruz, Ioniq 5, Ioniq 6, Nexo
- Genesis: G70, G80, G90, GV60, GV70, GV80
Hyundai Arbitration
Hyundai and Genesis use BBB Auto Line. Awards are non-binding on the consumer.
Free Hyundai Lemon Law Case Review
If your Hyundai has experienced engine seizure, charging failure, or other defects, McMillan Law Group will evaluate your case at no cost. No fee unless we win.