Tesla SOFTWARE – a car that evolves after purchase

A Tesla is more than an electric car. Its navigation, charging behaviour, infotainment, assistance systems and many vehicle controls run on a large software platform that Tesla changes through over-the-air (OTA) updates. An update can add capabilities, fix faults or tune existing systems without a service visit.

This is a significant advantage, but not a Tesla-only feature. Other manufacturers also update cars over the air. How far an update can go always depends on the vehicle's hardware: software cannot add a sensor, a faster processor or a heat pump that the car does not have.

The table below shows real changes from recent updates. Each example names the version and its source. Versions and features reached different cars at different times, and not every car received every feature.

How an update works

1. Tesla prepares and releases a software version.
2. The release is made available to selected vehicles in stages.
3. The car downloads it, usually over Wi-Fi; Tesla sends some updates over the cellular connection when needed.
4. A clock icon on the touchscreen (and the Tesla app) signals that the update is ready to install.
5. You install it now, schedule a time, or let the car install automatically overnight at Home.
6. After installation, the release notes appear on the touchscreen and remain under Controls → Software → Release Notes.

Safety during installation

• You cannot drive while the update installs. The car must be in Park; doors, windows and some safety systems may be limited.
• Charging stops during installation and resumes automatically afterwards.
• Installation time depends on the update; Tesla says some take about 30 minutes and some longer.
• Updates do not install while Keep Climate On, Pet Mode or Camp Mode is active. If you drive at the scheduled time, the installation is cancelled.
• Reverting to a previous version is not possible for owners.
• Repeatedly pressing "check for updates" does not force a release; Tesla does not update cars on request.

Standard and Advanced

Under Controls → Software, Tesla's manual describes a preference: Advanced receives additional, earlier releases, Standard waits until others have installed and gets fewer releases. Advanced is not the early access programme and does not guarantee every version immediately. Tesla decides how, when and where each release goes. According to release-note reports, update 2026.14 turned this choice into a single on/off switch, so the label in your car may differ from the manual.

• Updates appear continuously during the year rather than on a published timetable.
• Several revisions of one branch can follow each other within days, for example 2026.38.5 (first seen 10 October 2026) and 2026.38.5.10 (20 October 2026).
• A single car may go weeks or longer between updates.
• Not every released version is meant for every vehicle; some go only to limited groups, regions or hardware.

The categories below are our editorial classification, not Tesla's. One update often belongs to several categories at once.

Take 2026.32.7:

• 2026 is the year of the software branch.
• 32 is the branch number, commonly read as a week of that year. It is not a month.
• 7 is the revision or release within that branch.

More examples: 2026.32 is the first release of a branch; 2026.32.3 and 2026.32.7 are later revisions of it. Versions such as 2026.33.100 or 2026.20.200.1 carry a high third segment and appear as parallel builds. In 2026, 2026.33.100 contained a European FSD build, but .100 does not automatically mean FSD. Four-segment versions such as 2026.38.5.10 or 2026.26.6.5 are further builds on top of an existing revision.

Tesla has not published complete numbering rules. You cannot reliably derive the release date or the list of changes from the number itself. Use the decoder below: it explains the structure of any valid number and shows release notes only for versions in our verified catalogue.

Tesla vehicle software ("Tesla OS") is the car's overall software release and user interface. A number such as 2026.33.100 identifies that release. "Tesla OS" is used here as a common name for the platform, not as Tesla's official name for every internal component.

FSD – Full Self-Driving (Supervised) is an advanced driver-assistance system with its own version, such as v14.2.2.6. In Europe, Tesla now calls it Tesla Assisted Driving. FSD is not a separate app you can install on its own; its software arrives inside a vehicle update, and whether it can be used depends on the car and other conditions.

1. Vehicle software and FSD use different version numbers.
2. A higher vehicle software number does not automatically mean newer FSD.
3. Tesla maintains several software branches in parallel.
4. Cars receive different packages depending on hardware and region.
5. FSD code being present in an update does not mean FSD may be activated.
6. Buying or subscribing to FSD does not remove regulatory restrictions.
7. FSD (Supervised) requires the driver's active supervision at all times; it is not autonomous driving.

• Country and regulation: some functions need national approval or are adapted to local rules.
• Model: some features exist only for certain models.
• Year of production and hardware revision: parts and wiring change during production.
• Infotainment processor: Intel and AMD Ryzen computers support different features; for example, some Halloween features in 2026.38.5 were AMD-only.
• Autopilot hardware: HW3 and AI4 (HW4) cars receive different FSD builds.
• Software branch: a car can be on a parallel branch with a different feature set.
• Activated features and entitlements: purchased packages, subscriptions and Premium Connectivity.
• Staged rollout: an update reaches cars gradually, so two neighbours may get it weeks apart.

Example: two Model Y cars in Czechia both show the same software version. One is an AI4 car with FSD (Supervised) purchased, the other an older HW3 car. Only the AI4 car can use the European FSD build, and only where it is approved. Features that need Premium Connectivity, such as weather maps, appear only on the car with that subscription. Do not assume a feature from the model year alone; check the hardware under Controls → Software → Additional Vehicle Information.