NHTSA Complaint #11715170 — 2022 TESLA MODEL 3

When cabin heat is enabled, visible vapor/smoke emits from the front trunk area under the windshield cowl and is pulled directly into the cabin through the HVAC intake. The vapor has a chemical/sweet odor consistent with coolant or refrigerant. Smoke enters the passenger compartment, especially when stopped or idling. This occurs repeatedly in cold temperatures and stops immediately when HVAC heat is turned off. No warning lights appear. This appears to be a heat pump or coolant system leak upstream of the cabin intake, allowing chemical fumes to enter the cabin air stream. Occupants are exposed to fumes while driving. This is a safety concern due to inhalation risk and lack of driver warning.