Tesla, the renowned electric vehicle manufacturer, has introduced a detailed and comprehensive diagnostic and repair utility called Service Mode. Unlike other vehicle manufacturers, Tesla's Service Mode does not require external plugs, adapters, or computers, making it easily accessible for both Tesla owners and third-party technicians.

Accessing Service Mode is hassle-free as it can be reached by simply entering a special mode on the vehicle's touchscreen. By tapping the vehicle controls button and navigating to the Software tab, users can access the Service Mode by tapping and holding the word "MODEL" for 2 seconds, followed by entering the access code "service". It is important to note that driving the vehicle in Service Mode is not recommended as many safety features are disabled.

Service Mode offers a range of diagnostic tools to test various vehicle subsystems and components. The available options may vary based on the vehicle model and its specific systems. For instance, the Model S offers a diagnostic tool for troubleshooting door handles, while the Model X has one for its falcon-wing doors. However, most tools are designed to apply to a wide range of Tesla vehicles.

The Vehicle Info section in Service Mode provides important information such as the vehicle identification number (VIN), Autopilot computer, software version, and more. It also offers access to service alerts, settings, software reinstallation, touch screen checks, and additional online resources in the form of the vehicle's Service Guide.

The Infotainment section consists of two menus - Connectivity and Software. The Connectivity menu provides details on Wi-Fi and Cell connectivity, as well as the status of the vehicle's modems. Users can run tests on either modem from this menu. The Software menu displays information on downloaded software, backup banks, and map information.

The High Voltage section is particularly useful as it allows users to conduct Battery Health tests. This section provides comprehensive information on the high-voltage system, including the battery, inverter, motors, vehicle charger, contactor, and high-voltage pyro fuse. The temperature of the battery and details on connected charging apparatuses are also available.

The Low Voltage section deals with the other electronics in the vehicle and provides information on various components, including the 16v Lithium-Ion or 12v Lead-Acid for older vehicles. It also includes a Homelink menu where users can commission the Homelink module and view programmed devices and transmitted codes.

The Thermal menu displays the status of the HVAC system and the vehicle's portion of the battery loop. It offers self-test options, coolant and thermal pump settings, and information on the cabin and HEPA filters.

The Chassis menu provides steering options, allowing users to view or adjust steering wheel offsets, access suspension information, recalibrate the steering column, and confirm the functionality of steering wheel buttons and stalks. It also includes details on the vehicle's brakes, including tests and options for brake bleed and burnishing.

The Closures menu indicates the status of windows, automatic doors, and defrosters. Users can recalibrate windows and perform specific tests based on the vehicle model.

The Safety & Restraints section displays the status of airbags, seat restraints, occupancy sensors, and pyro fuses. It allows users to confirm the proper functioning of these safety features without any faults.

Tesla also offers additional tools through Service Mode+ and Toolbox3, which are subscription-based services aimed at fleet owners, collision centers, and Tesla technicians. Service Mode+ provides further diagnostic and repair capabilities, as well as the ability to enable or disable Service Mode remotely. Toolbox3 is a subscription-based service available for third-party technicians and collision centers, providing access to advanced vehicle data and diagnostics.

It's important to note that Tesla's Online Service Manuals provide detailed guidance on setting up and using Toolbox3 for technicians interested in utilizing the service, which requires a Toolbox3 setup and subscription for access.

Overall, Tesla's comprehensive Service Mode is a valuable tool for efficient vehicle servicing, allowing owners and technicians to easily diagnose and repair Tesla vehicles with its user-friendly interface and extensive range of diagnostic tools.