Infotainment and software defects are the fastest-growing category of California Lemon Law claims. As vehicles depend more on software for essential functions, defects that would once have been mere inconveniences now substantially impair use, value, or safety. Qualifying defects include touchscreen freezes, infotainment system crashes, over-the-air (OTA) update failures, regressed features after OTA updates, CarPlay/Android Auto failures, persistent connectivity loss, navigation system crashes, voice control failures, and software regressions of safety-critical features. Modern manufacturers including Tesla, Ford, BMW, Mercedes-Benz, Volvo, and the Korean OEMs all generate substantial software-defect lemon claims. Under the Song-Beverly Act, software defects qualify on the same terms as hardware defects.
Common Qualifying Infotainment & Software Defects
- Touchscreen freezes and crashes. Display becomes unresponsive; the infotainment system reboots or remains frozen.
- Touchscreen failures. Touch input becomes unreliable or stops working entirely.
- OTA update failures. Update bricks the system or reverts essential features.
- Software regressions. OTA update removes or breaks features that worked before — particularly significant for advertised features that informed the purchase decision.
- CarPlay / Android Auto failures. Wireless connectivity drops; phone projection won’t connect.
- Bluetooth and Wi-Fi connectivity loss.
- Navigation crashes. Maps fail, routing errors, position drift.
- Audio system failures. Cuts out, distortion, premium audio not functioning.
- Voice control failures.
- Backup camera failures. Camera does not display when reversing.
- Software-related ADAS failures. See safety system defects.
Why Software Defects Qualify Under Song-Beverly
The Song-Beverly Act protects the consumer’s reasonable expectations from the express warranty. Modern manufacturer warranties cover both hardware and software components. When advertised features fail or are removed via OTA update, the consumer has been deprived of the bargained-for product. California courts treat software defects equivalently to mechanical defects when they substantially impair use or value.
A backup camera failure, for example, is a safety-related software issue that may trigger the two-attempt presumption under § 1793.22 — backup cameras have been federally mandated since 2018 and their failure substantially impairs safety.
Notable Manufacturer Software Defect Patterns
- Tesla. MCU (media control unit) failures on Model S/X; Autopilot software regressions; Full Self-Driving feature inconsistencies.
- Ford SYNC. SYNC 3 and SYNC 4 freezes, CarPlay disconnects, navigation issues on F-150 and Mustang Mach-E.
- BMW iDrive 8. Touchscreen lag and connectivity issues.
- Mercedes-Benz MBUX. System crashes and Hey Mercedes voice failures.
- VW/Audi MIB3. Persistent screen freezes and battery drain.
- Volvo Polestar Android Automotive. Account login issues, app crashes.
- GM Ultium / Ultifi. Software issues on Lyriq, Bolt EV, Hummer EV.
- Hyundai/Kia Bluelink. Connectivity outages and feature regressions.
Counting Software Reflashes as Repair Attempts
California courts have repeatedly held that software updates count as repair attempts under the lemon presumption. Each dealer visit where the technician applies a reflash, downloads a calibration, or performs an OTA-triggered repair counts toward the four-attempt (or two-attempt safety) threshold under § 1793.22. OTA updates delivered remotely also support the claim when documented.
Documentation Tips
- Screenshot or photograph error messages, system reboots, and frozen displays
- Save OTA update notifications and pre/post-update feature lists
- Track every software update — dealer-installed and OTA
- Document feature regressions in writing: “Feature X worked at delivery; removed by update on [date]”
- Retain repair orders even for software-only visits
Free Case Review
If your vehicle has persistent software defects despite multiple updates, McMillan Law Group will evaluate your repair history at no cost. No fee unless we win.