Tesla Service Mode: How to Access It and What It Does (2024)

Tesla ships a very detailed and comprehensive diagnostic and repair utility that is available in-vehicle, without requiring external plugs, adapters, or computers. It helps both Tesla and 3^rd party technicians service Tesla vehicles far more efficiently.

Who Can Access It?

Unlike many other vehicle manufacturers, who require OBD-2 ports, service subscriptions, and other external utilities, anyone can access Tesla’s service mode. All owners and 3^rd party technicians can access Service Mode by simply entering a special mode in the vehicle.

What Features Does It Have?

Service Mode is a special hidden app in the vehicle that provides various diagnostics tools that let you test various vehicle subsystems and components. Remember that if you’re exploring service mode on your own, you’ll want to be careful. Many of the features kept inside Service Mode are intended for debugging or repair – and not for the average user, however, Tesla provides a very user-friendly interface.

The options available will vary based on the vehicle and the systems available in that vehicle. For example, the Model S will have a diagnostic tool to troubleshoot its door handles, while the Model X will have one for its falcon-wing doors, but most tools will apply to a wide range of vehicles.

How to Access Service Mode

Tesla’s Service Mode is accessible via the touchscreen with just a few taps. Go to the vehicle controls button (the car icon), and tap the Software tab. After that, locate the vehicle model badge, (e.g. MODEL Y Long Range), directly beneath the vehicle image.

Tap and hold the word “MODEL” for 2 seconds, until you see a small ripple then let go. A menu and on-screen keyboard will pop up, prompting for an access code. Type the access code “service”.

Once you do this, it will bring up the SERVICE menu and a new app in the dock that’s red with a wrench. The entire display will also have a red border around it, indicating the vehicle is in Service Mode. Do NOT drive the vehicle in Service Mode, as many safety features are disabled while Service Mode is active.

How to Exit Service Mode

Once again, you can disable Service Mode from the primary display. If you’ve gone into another app, locate a bright red icon with a wrench in the dock or in the All Apps menu.

Once you bring up the Service Mode app, tap on the last icon in the left column. It’s red and shows a door with an arrow. Simply tap and hold this icon for several seconds to exit Service Mode. You’ll know once Service Mode is exited because the red border around the screen will be removed.

If you can’t find the Service Mode app, start Service Mode again by going to Controls > Software and holding the badge icon to enter Service Mode mode again. Once you’re back in the menu, tap and hold on the red exit icon.

Vehicle Info

Tesla breaks Service Mode into various sections which we’ll go through below. The Vehicle Info section provides most of the same information available in the vehicle’s Software menu, showing you things such as VIN, Autopilot computer, software version and more. At the bottom, you also have access to Service Alerts, Service Settings, Software Reinstall, and a Touch Screen check to confirm your display is working correctly. There is also a button for Additional Resources, which takes you to your vehicle’s Service Guide online.

Driver Assist

This tab has two menus – Cameras and ECU. The Cameras menu provides nominal information on the vehicle cameras, including pitch information – useful for technicians working on the windshield. You can also clear camera calibration from here – but you can also do that within the regular vehicle menus and get a full preview of all cameras.

The ECU tab provides information on the vehicle's electronic control unit and GPS/GNSS.

Infotainment

The Infotainment tab has two menus – Connectivity and Software. The Connectivity menu provides information on Wi-Fi and Cell connectivity and the status of the vehicle’s modems. You can run tests on either modem from here.

The Software tab provides information on the vehicle’s downloaded software and backup banks. Here, you’ll see that both the infotainment and Autopilot systems have 2 side-by-side banks – one keeps the previous update. Map info is also available here. These will be blank or display “—” while updating.

High Voltage

The High Voltage section is one of the most useful menus – it provides you with the ability to conduct Battery Health tests. The UI here provides information on the entire high-voltage system, including the battery, inverter, motors, vehicle charger, as well as the contactor and high-voltage pyro fuse.

The second tab in the high voltage menu displays the temperature of the battery and details on connected charging apparatuses.

Low Voltage

The Low Voltage system is all the other electronics in the car, and it provides information on the various low voltage components, including the 16v Lithium-Ion (or 12v Lead-Acid, for older vehicles).

This UI is drastically different in the Cybertruck – where it does not run on 16v, but rather 48v.

The last piece of the Low Voltage UI is Homelink. If you purchase Homelink – an add-on module – Tesla will install it for you. If you choose to install it yourself, you can commission the Homelink module through this menu. In the menu, you can also see how many devices are programmed and how many codes have been transmitted with HomeLink.

Thermal

The Thermal menu displays the status of the HVAC system, as well as the battery’s portion of the loop. It’s one of the coolest-looking menus since its animated.

It provides options for self-tests, as well as several options for the coolant and thermal pumps. This UI is for vehicles with heat pumps – legacy vehicles will have an A/C compressor and resistive heating.

This is also where you can view the status of your cabin and HEPA filters, and you can see if they need to be replaced.

Chassis

The Chassis menu provides you with steering options – and the ability to view or adjust your steering wheel offsets, look at suspension information on the Model S and X, re-calibrate the steering column, and confirm each of the buttons on the steering wheel and its stalks are working as expected.

It also provides you with some details on the vehicle’s brakes – showing some test and brake bleed options. An option for Brake Burnishing option is also available here.

Closures

The closures menu shows the status of windows, or automatic doors as well as the status of the front and rear defrosters. You can recalibrate each window and confirm it’s working properly. On the Model S it displays information on the automatic door handles, on the Model X it has a test for the gull-wing doors and for the Cybertruck you can test the tonneau cover.

Safety & Restraints

This menu simply displays the status of airbags, seat restraints, occupancy sensors and the pyro fuses in them, letting you confirm that each item is working properly and doesn’t have any faults.

Service Mode+ and Toolbox3

Of course, Tesla does have their own way of getting even more data than what is provided in Service Mode, through Service Mode+ and Toolbox3 – a subscription-access service similar to other vehicle vendors.

Service Mode+ is an additional set of tools that are internal to Tesla and require a Toolbox3 setup and subscription to access. It provides further information to fleet owners, collision centers, and Tesla technicians to diagnose and repair vehicles, as well as providing the capability to easily enable or disable Service Mode on vehicles remotely.

Toolbox3 is a subscription service that Tesla offers 3^rd-party technicians and collision centers for around $3,000 per year or a hefty $500 for 30 days. Toolbox3 is installed on a computer and uses a special vehicle interface cable connected to the vehicle. If you’re a technician looking for details on how to set up or use Toolbox3, Tesla’s Online Service Manuals provide a per-vehicle and per-hardware spec guide on how to set it up.

With Tesla’s highly anticipated Robotaxi event just a couple of months away on 8/8, and the Robotaxi itself expected to come to market in 2025 or 2026, the question arises: what is Tesla’s future direction?

Will they continue to produce cutting-edge cars, or will they pivot toward a future where car ownership may no longer make sense?

Advantages of Robotaxi

One of Tesla’s upcoming focuses is bringing the price per mile for its Robotaxi network down to one that rivals bus tickets in major cities. Achieving this is quite an engineering and software feat and something that could still be years away.

But what about the Robotaxi itself? Will the advent of cheap, quickly available robotic taxis in cities and suburbs drive away car ownership in urbanized areas?

The potential for Tesla’s Robotaxi service to transform what we currently know as urban mobility is immense. By offering a cost-effective, convenient, and eco-friendly alternative to traditional car ownership, Tesla could change how people navigate cities. The allure of summoning a cheap, quick, and clean Robotaxi could reduce car ownership in cities, alleviate traffic congestion, reduce pollution, and ease parking issues in urban areas.

Moreover, if Tesla succeeds in reducing the price per mile to be competitive with, or even cheaper than mass transit options, the financial incentive to abandon car ownership could become even stronger. For many urbanites, the expenses associated with car ownership – such as insurance, parking, maintenance, charging or fueling costs, and the upfront purchase – can be prohibitive. Robotaxis could tip the balance by providing a seamless, on-demand transportation solution without these additional expenses.

Trust in Robotaxis

However, there are significant obstacles between Tesla and its rosy Robotaxi future. Regulatory and societal hurdles loom ahead on the horizon. From a regulatory perspective, getting Robotaxi services approved will be a major challenge, as Tesla’s autonomous competitors have found themselves operating in regulatory grey zones. Governments will need to develop new frameworks to accommodate and oversee the deployment of autonomous vehicles, ensuring they meet safety and operational standards.

Societally, people will need to adapt to the idea of letting a computer drive them around. This transition can be challenging; even Tesla has found it difficult to convert those offered the FSD V12 trial into paying subscribers. Building trust in autonomous vehicle technology is crucial for the mass adoption of Robotaxi services. Outside of diehard fans and tech enthusiasts, the general public will need to be convinced of the safety and reliability of autonomous vehicles.

Ensuring that Tesla’s reputation for safe vehicles transfers to Robotaxi and FSD will be essential. Tesla must demonstrate the consistent safety and reliability of its Robotaxis to gain this trust.

Reducing Parking & Increasing Drop Off Zones

Moreover, the presence and availability of Robotaxis required to displace car ownership in urban centers will necessitate substantial infrastructure investment and acceptance by local governments. Tesla has already deployed an impressive Supercharger network, but the scale required for a fully operational Robotaxi network is much larger. This will mean developing parking garages and charging stations in urban centers, located in centralized areas to ensure ease of access for Robotaxis.

Additionally, integrating Robotaxis into the existing urban fabric will require collaboration with city planners and local authorities. They will need to address concerns about traffic flow, designated pickup and drop-off points, and the overall impact on public transportation systems. The seamless integration of Robotaxis into cityscapes will be critical for their success.

In short, while the promise of Tesla’s Robotaxi network is transformative, achieving this vision will require overcoming significant technical, regulatory, and societal challenges. If Tesla can navigate these obstacles, the benefits of a cost-effective, convenient, and eco-friendly transportation alternative could revolutionize urban mobility, reduce car ownership, and contribute to a more sustainable future.

Tesla as a Car Company

Today, Tesla is still fundamentally a car company. It produces five different consumer vehicles: the Model S, Model 3, Model X, Model Y, and the Cybertruck. Of these, the Model Y achieved remarkable success in 2023, becoming the best-selling vehicle in the world, a significant milestone for an electric vehicle (EV). This success underscores Tesla’s engineering and design prowess, demonstrating its ability to create vehicles that appeal to everyday consumers.

Tesla’s focus on innovation and pushing the boundaries has set it apart in the automotive industry. The company revolutionized car manufacturing with its Gigacasting process, which allows large sections of the vehicle to be made from single pieces of cast aluminum. This innovation reduces complexity, increases production efficiency, and lowers costs. Tesla continues to innovate with its Unboxed vehicle assembly process, further streamlining production. Tesla’s vertically integrated approach is unique in the industry, minimizing reliance on third-party suppliers for vehicle subcomponents. This strategy enhances quality control and allows for faster implementation of new technologies. The Gigafactory model, established by Tesla, plays a crucial role in this approach. Located in the United States, China, Germany, and soon in Mexico, these Gigafactories are not just manufacturing hubs; they are centers of innovation. They serve as test beds for updated production processes and vehicle designs and are sites for subcomponent and battery assembly.

Beyond their manufacturing capabilities, each Tesla vehicle is an engineering marvel. Tesla’s cars consistently score some of the highest ratings in safety tests, reflecting the company’s commitment to building safe vehicles. Their performance is equally impressive; for example, the updated Model 3 Performance boasts an impressive 0-60 mph acceleration time. Tesla also continues to push the envelope with forthcoming models, such as the eagerly anticipated updated Roadster, which promises to deliver unparalleled performance.

Tesla has set industry standards in several key areas, including over-the-air updates, battery performance, acceleration, range, and user experience. The ability to receive software updates remotely keeps Tesla vehicles current and continuously enhances the user experience. The company leads in battery technology, offering some of the best range and performance metrics in the industry. Tesla’s vehicles are known for their impressive acceleration and long driving ranges, making them not only environmentally friendly but also highly practical and enjoyable to drive. Furthermore, Tesla excels in providing a superior user experience, both in the vehicle and during the shopping process, with minimalist, high-tech interiors and intuitive user interfaces.

Tesla Challenges

However, Tesla faces significant challenges as it continues to grow. The automotive industry is fiercely competitive, with both established automakers and new entrants ramping up their EV offerings. Companies like Ford, General Motors, Volkswagen, and Rivian are investing heavily in electric vehicle technology and infrastructure, intensifying the competition. There are also upcoming Chinese EV companies making strides in both battery tech and additionally, the global transition from internal combustion engine vehicles to electric vehicles is still in its early stages. Broader adoption of EVs depends on various factors, including government policies, the development of charging infrastructure, and changing consumer preferences. Tesla’s ability to influence and adapt to these factors will be crucial for its sustained growth as a car manufacturer.

Wrapping it all together, while Tesla is exploring new avenues as a services company, its core identity as a car manufacturer remains robust. The company’s success with the Model Y and its innovative manufacturing practices highlight its strength in the automotive sector. As Tesla continues to push the boundaries of electric vehicle technology and manufacturing, it solidifies its position as a leader in the industry and sets the stage for future growth.

Recently, quite a few employees and internal testers have leaked images of Tesla’s release notes. Tesla prefers to keep its software releases and release notes closely held, and they’re now taking some steps by watermarking release notes to prevent further leaks.

Watermarks

In-vehicle release notes will now be watermarked with vehicle VINs. This will prevent quick and simple photos of the release notes from being leaked easily. The presence of a VIN watermark means that an employee or tester who shares an image can be quickly and easily identified and then removed from the testing program.

Tesla is also watermarking the release notes in the Tesla app in addition to the ones in the vehicle.

Tesla is hoping that this will reduce information sharing and prevent leaks. However, there are several ways around this that will likely be used going forward – expect images to be edited after being taken to remove or blur out the VINs, or for the notes to be fully transcribed into text.

Wave 1 Employees

Tesla’s Wave 1 employees receive updates several weeks before they go out to the general public. Wave 1 employees serve as an additional internal testing step, and benefit from the employee perk of early access to new features and improvements. This lets Tesla give its employees a tangible benefit, while also allowing it to test outside its dedicated quality assurance group of employees and vehicles.

This is a pretty crucial role – Wave 1 employees act as a safeguard against buggy updates. By catching potential issues with various vehicle hardware combinations or edge cases here, Tesla can nip these problems in the bud. For instance, the 2024.20 update has already had a revision – 2024.20.1, before starting to go out to Tesla owners. FSD V12.4 is the same – V12.4.1 is likely the version that will be going out to owners.

This is a safety-conscious approach that lets Tesla test for bugs across its widely varied hardware and rectify any bugs as they’re caught by employees. Once no major issues are found in the wave 1 group, either by employee reporting or by automatic bug reports, the update then gradually starts to roll out to the public in small numbers.