✅ Confirmed
FSD
FSD
FSD v14 Lite may cause computer failures on HW 3 vehicles
Tesla owners with Hardware 3 report computer failures after updating to Full Self-Driving version 14 Lite. The most common fault is APP_w141_ECU_Thermal_Issue, triggered when the Autopilot control unit exceeds 90 °C. HW 3 has only 8 GB RAM compared to 32 GB in HW 4, so Tesla released this “lite” version to prevent slowdowns. Tesla has not confirmed a link between version 14 Lite and overheating, but many HW 3 vehicles are out of warranty, so monitoring these issues is advised.
- APP_w141_ECU_Thermal_Issue fault triggered by overheating >90 °C
- HW 3 has 8 GB RAM; HW 4 has minimum 32 GB RAM
🔎 Why it matters: FSD v14 Lite impacts HW 3 vehicles with memory constraints causing thermal faults in the Autopilot ECU.
📈 Upside: Not applicable.
📉 Risk: Overheating may cause permanent computer failures on out-of-warranty HW 3 vehicles.
🤖 Editorial summary of the cited source, with AI-assisted analysis -- not HgYperDrive original reporting. The original source is linked above for verification. More on how this works: editorial policy →