Certain vehicles could have a loss of cabin heating in cold temperatures. If this happens, the windshield defrost and defog system may not work properly.
Safety Risk
A defrost or defog system that does not work properly could make it difficult to see through the windshield. Reduced visibility could increase the risk of a crash.
Corrective Actions
Tesla will email a notice to owners and provide an over-the-air firmware update to fix this problem. There is no further action required if your vehicle has firmware release 2021.44.30.7 or a later release.