Diagnostics, feature requirements and software campaigns.
Your region is remembered for both language versions of the software catalogue. Unknown applicability remains visible and clearly marked.
These reference entries do not have a single regional scope. Check the individual feature description and the car’s VIN.
2026.38 · Service Mode · All vehicles on the Tesla list
Screen Language and Insulation Control in Service Mode
Tesla has described two changes to its diagnostic regime. They are for service, not for the owner’s regular menu.
Temporary Interface Language
When logging into Service Mode, you can temporarily select the screen language. After the release, the owner's language returns; the change of language restarts the interface.
All vehicles are service mode only
Isolation information
In the high voltage panel, touching the indicator reveals the insulation resistance values and, if there is a problem, associated warnings and diagnostic codes.
All vehicles are service mode only
Service Mode's public notes do not reveal the deployment date or confirm the availability of a version on every vehicle in Europe.
2026.32 · Model 3 and Model Y · Part of the features are limited to hardware configuration
Screen diagnostics and stored signal sets
In Service Mode, there are tools for checking displays and a quick selection of sets of diagnostic signals.
Display diagnostic panel
Shows the state of the center and rear screens, communication, frame rate and touch and color checking tools.
Model 3 and Model Y · Service Mode
Finished sets in Signal Viewer
The wizard can download a set of signals for a typical diagnostic task instead of manually selecting each parameter.
Model 3/Y with AMD Ryzen, Model S/X 2021+ Service Mode Plus
The headlight wizard from the same version of Tesla restricts the Model 3/Y with AI4 in the US and Canada, so do not pass it off as a European feature.