Tesla Service Mode: How to Access It and What It Does

Tesla's Service Mode

Not a Tesla App

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.

The Vehicle Info section of Service Mode

Not a Tesla App

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

Infotainment section of Service Mode

Not a Tesla App

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

High Voltage section of Service Mode

Not a Tesla App

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.

The Thermal Menu on 2024.14

Not a Tesla App

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

Safety & Restraints section of Service Mode

Not a Tesla App

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.

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Tesla FSD V13 Makes Big Improvements Around Emergency Vehicles, School Buses and Speed Zones [VIDEO]

HABiBtheDWEEB / bilalsattar

Tesla’s FSD V13.2.2 continues its rollout to the HW4 fleet, now complete with holiday goodness that makes it available to all HW4 vehicles. While FSD V13 is capable of some incredible feats, such as three-point turns, there are some additional capabilities Tesla hasn’t talked about yet.

Emergency Vehicle Handling

First up, better handling for emergency vehicles. While Tesla works on gathering audio data to make emergency vehicle detection even better, Tesla improved how it handles emergency vehicles with FSD V13.

FSD previously had issues handling emergency vehicles - sometimes pulling over and stopping on V12, other times requiring driver intervention to do the job. This led to lots of user interventions when an emergency vehicle was detected. Ensuring you’re out of the way of an ambulance can save precious seconds - which is enough to save lives.

V13 now does a much better job of pulling overly safely to the side for emergency vehicles. Check out the video below of FSD pulling the vehicle over to the side of the road.

First time ever witnessing FSD pull over for an ambulance! @edgecase411 pic.twitter.com/pZlort36PF

— Bilal Sattar (@bilalsattar) December 21, 2024

School Buses

Another issue that FSD had trouble handling previously was school buses. Previously, FSD would ignore the stop sign and flashing lights and attempt to drive around the bus.

School buses often required driver intervention, but it seems Tesla has dedicated time to training FSD V13 to handle them properly now. Check out this post of FSD now successfully stopping and waiting for a school bus.

FSD v13 stopped for a school bus! Waited till the stop sign folded in and then proceeded forward! pic.twitter.com/ReU4enxnNB

— HAB!B (@HABiBtheDWEEB) December 19, 2024

Speed Zone Handling

Reduced speed zones, including school zones, have had mediocre handling by FSD in previous versions. Now, some initial speed zone handling has arrived in V13.2. However, while it does handle some speed zones with blinking signs, it doesn’t necessarily handle all speed zones. For now, while Supervising, drivers will need to make sure their vehicles don’t exceed the speed limit, especially in school zones. In the meantime, look at this speed video of the vehicle handling a speed zone with FSD V13.

Slightly better video of FSD V13 responding appropriately to flashing yellow lights indicating it’s temporarily a 20mph zone. It didn’t exceed 25 despite being set to a much higher max speed

Wish I had it engaged before the turn though, my brain wasn’t working pic.twitter.com/D091lqmROh

— Geoff Coffelt (@Skate_a_book) December 20, 2024

Camera Cleaning

As part of V13, Tesla included some interesting features addressing hardware - namely camera cleaning, The initial changelog was slightly vague: “Improved Camera Cleaning” and nothing else.

It turns out this actually refers to the camera heating elements around the vehicle, including those around the B-Pillar. According to FSD engineer Yun-Ta Tsai, this is far more complex than just heating the camera up.

The system integration team does a lot of energy and thermal optimization across the entire vehicle, to optimize autonomy.

This is just one example. The heating is actually more complex than just heating it up.

Yes, real world AI cares about these things, a lot!

Join us, if… https://t.co/EprJ805FYi

— Yun-Ta Tsai (@YunTaTsai1) December 21, 2024

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Tesla Addresses Cybertruck Tonneau Cover Leaks with New Rubber Seals

The new Rubber Seal on the Aero Flap

theMONK11/Reddit

The Cybertruck features an automatic tonneau that lets you lock in valuables. It rolls back and forth along a track and is somewhat water-resistant. Tesla never said that the tonneau would be waterproof, but many owners have encountered a lot of water flowing into their tonneau covers.

The place where the glass roof meets the plastic strip - the aero flap- seems to be the location where most of the water gets in, and this has been noted by many as a constant source of leaks - while the rest of the bed stays mostly dry.

Tesla has attempted to fix this by adding additional slats to the tonneau, which ensures that there are slats left over underneath the aero cover, thereby providing some additional water resistance. However, it looks like they’re doing more now to prevent these leaks. 

New Rubber Seals

Tesla intends to issue a service code - the term they use for service bulletins to fix common problems - for this particular issue. This service code will include the removal of the old aero flap and the installation of a new aero flap that has additional rubber seals - similar to the ones used on windows. Thanks to theMONK11 on Reddit for catching this and providing the photo.

The service code hasn’t gone live yet, so it looks like Tesla is only testing this new part for owners who have complained about excessive water intrusion. We’ll likely see this new flap, with the additional rubber seals, become a standard part on newly built trucks to resolve this issue.

For everyone else, you’ll need to put in a service ticket with Tesla, but we would recommend waiting a few weeks before doing so. That will give them time to finalize the process and have the new part sent around to service centers across North America. Given that this isn’t a critical issue to the functionality of the vehicle, Tesla likely will not issue a recall for this - so it’ll be up to owners to create a service ticket and have the new applique installed.

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