What's new in update 2026.38.3.1: Halloween Mode, Security Improvements.
Spread holiday fear year round with Halloween Mode. Put a Ghost Costume on your car visualization. Turn on Trick or Treat Mode to play spooky sounds and flicker the lights when visitors approach. Schedule a haunting light show, and turn your car into a chilling Photobooth!
This update includes important security fixes and improvements.
The text comes straight from the car via the official Tesla Fleet API and is shown unchanged. Images and text are the property of Tesla, Inc.
On the touchscreen open Controls → Software. If 2026.38.3.1 has been released for your car you will see it there. The car must be parked and installation usually takes 20 to 40 minutes. If you do not see it yet, Tesla is probably still rolling it out.
Listings on TesList show real data from the car — battery health, options and software version.