Tesla improves Service Mode with alert payload data

August 4, 2022

By Kevin Armstrong

Alerts in Tesla's Service Mode will contain additional details on what triggered the alert

@Greentheonly/Twitter

Most modern cars come with access to a Controller Area Network (CAN) that lets you access information about systems in the vehicle.

It's often used to help diagnose vehicle issues and find out if a certain part may need to be replaced.

Teslas, just like other vehicles will display critical alerts or warnings on the screen based on CAN data.

The warnings can be as simple as being low on windshield wiper fluid. They could also alert you of critical issues such as airbag errors or heat pump issues.

Service Mode

For owners or shops who wish to troubleshoot or repair their vehicles, Tesla also includes a Service Mode.

Service Mode gives you access to more details about any alerts the vehicle has shown, as well as letting you reset certain systems.

Not every vehicle alert is customer-facing, meaning that some alerts only show up in Service Mode. These alerts could be temporary warnings without any customer impact, so they're of limited use to the vehicle owner, but they could be useful to a technician diagnosing an issue.

Although Service Mode displays additional details about vehicle alerts, they've also been somewhat limited.

Alerts are triggered based on certain readings from the vehicle's CAN, which provides real-time information on a slew of vehicle systems and any errors they report.

If the vehicle detects a high temperature or low voltage in a given system, it may trigger an alert. The user may see an alert such 'X system not available', although usually the reason is omitted.

In Service Mode, some additional information may be shown about a given alert, such as why it was triggered, such as due to low voltage.

However, up until now the additional information provided in the alert in Service Mode has been somewhat limited.

Alert Payload

In a recent update, Tesla has added individual CAN readings to the alert, known as the alert payload, or crack data. Instead of seeing a simple 'low voltage detected' message, technicians or DIY owners can now see the exact value of the voltage when the alert was triggered.

Twitter user @greentheonly shared this news on Twitter, showing a screenshot that shows the plethora of information that is now available to Model S and X owners. Model 3 and Model Y owners do not yet have access to this data, but it's reportedly coming soon in a future update.

Adding alert payload data to Service Mode is a significant shift, as Tesla kept this information close to the chest and encouraged owners to take their vehicles to Tesla service centers. However, with this kind of information now available, third-party electric vehicle shops will have the data to fix Teslas. Not only shops but do-it-yourself types will also have access to the same information previously available to the technical support team.

That said, it’s important to note that Tesla’s warranty can be voided “due to improper maintenance, service or repairs.” The warranty paperwork, which you should read before ever tinkering with a Tesla, or any expensive item, clearly detailed how the company “strongly recommends that you have all maintenance, service and repairs done at a Tesla Service Center or Tesla authorized repair facility in order to avoid voiding or having coverage excluded under this New Vehicle Limited Warranty.”

@greentheonly’s tweet got a lot of attention. In a follow-up tweet, the user tells readers to enter service mode, and the information can be found in the service mode menu. The tweet is accompanied by a short video showing how to get to service mode. The screenshot shows active alerts with drop-down menus that provide more details.

Reddit comments were supportive of having more information. One poster said: “After they made the service manuals free, I’ve found I can do literally whatever I’d like! I no longer need service to answer questions about parts, processes, or fixes. Just look it up in the manual!”

While another, clearly a DIYer, posted, “This pleases me. Hopefully, between this and the free service manual online, most repairs should be able to be done at home.”

But another commenter believes Tesla is still holding too much back, “Now give us gateway config tasks on the toolbox, and we'll actually be able to make meaningful changes to our car.”

Keep in mind that Service Mode is aimed at technicians and is not meant to be accessed by customers. The information displayed is not consumer friendly and will often require some vehicle knowledge to be useful.

Service mode will also disable various safety systems while in use, and it is not recommended to be accessed by customers.

Tesla May Improve Car Wash Mode With Window Alerts

May 5, 2025

By Karan Singh

Not a Tesla App

There are a few features to keep in mind when taking your Tesla through a car wash, but Tesla’s Car Wash Mode makes it easy by enabling or disabling several features for you. These settings don’t only prevent damage to your vehicle, such as locking the charge port door so that it doesn’t automatically open when a cleaning brush touches it, but they also improve the experience by recirculating the air in the vehicle to prevent cleaning chemical smells from coming in.

Car Wash Mode makes it easy by giving you a checklist of items and their real-time status, alerting you of any important items, such as your trunk being open.

When activated from Controls > Service > Car Wash Mode, it performs a list of actions:

Automatically closes all windows
Locks the charge port door to prevent accidental opening
Disables automatic windshield wipers
Turns off Sentry Mode
Disables the walk-away door lock
Silences Parking Sensor chimes
Enables easy access to the Fold Mirrors and Free Roll options (you can also put your vehicle in neutral through the gear stalk)

What About Your Windows?

While Car Wash Mode monitors more than a handful of items, it doesn’t continuously check the status of your windows. When you first enter Car Wash Mode, the vehicle will automatically roll up any open windows. However, it won’t alert you if a window has been lowered after Car Wash Mode was enabled. This could spell disaster for your vehicle's interior, as one user found out.

Lincoln posted a video on X, demonstrating what happened to his friend and requesting that Tesla add open windows to the list of flags in Car Wash Mode.

Tesla’s Troy R. Jones, VP of North America Sales and Service, noticed the post and decided to take action, offering to pass on the suggestion to the vehicle software team.

Good recommendation. Sharing with the team. Thanks
— Troy Jones (@troyrjones) April 21, 2025

Potential Improvements

While Troy’s response doesn’t confirm the feature being added in a future update, it’ll at least be put in front of the software team to potentially address.

Tesla could add this window-specific solution in several ways. Tesla could add this as another on-screen flag while the vehicle is in Car Wash Mode, simply alerting the driver that there’s a window open. However, they could also go one step further and lock the rear windows to prevent accidental opening while Car Wash Mode is enabled.

In case of an emergency, Tesla could present an on-screen button that pops up when a user tries to open a window while Car Wash Mode is activated, letting the driver override Car Wash Mode.

We’re interested to see what Tesla would do here, as these little quality-of-life changes really improve the end-user experience. What else would you like to see added to Car Wash Mode?

Houston Neighborhood Offers a Glimpse of the Future With Tesla-Powered Smart Homes

May 5, 2025

By Karan Singh

Not a Tesla App

Tesla offers a range of home energy products — from the widely used Wall Connector to the Powerwall and the innovative Solar Roof. Now, for the first time, a unique residential development in Houston, Texas, combines all of these technologies — and more — to move toward energy self-sufficiency.

Self-Sufficient

This community, located in Oaks of Shady Acres and built by Utopia Homes, consists of just 11 townhomes, each designed using Tesla technology to be self-sufficient. Utopia has equipped the homes with Solar Roofs, Powerwalls, and Wall Connectors to complete the entire ecosystem.

Tesla’s Solar Roof replaces traditional roofing materials while doubling as a clean energy source during daylight hours. The best part is that it mimics the look of conventional shingles while improving durability and longevity. Any excess energy generated is stored in the home’s Powerwall 3 units, providing power when the sun is down.

Tesla's Solar Roof

Not a Tesla App

Tesla’s Universal Wall Connector, which can charge any EV equipped with either a NACS or CCS port (through a J1772 adapter). If you added on a Cybertruck with Powershare (more vehicles will support Powershare in the future), you’d have a backup system that would last an extremely long time on batteries alone.

A Powerwall 3 stores about 13.5 kWh of energy, while a Cybertruck has a battery pack of 123 kWh, which is roughly equivalent to about nine Powerwalls. In addition, the Cybertruck could be used as a “mobile battery pack,” which can get additional energy from Superchargers and bring it back to the home if there’s an extended power outage.

Utopia markets these homes with “100% energy security,” - but they’re still grid-connected. However, they appear to have made quite a point with this - as many people in Texas, with its notoriously unstable electricity grid - were excited to get into these homes.

Sadly, these homes still include a gas range, so they’re not entirely green and disconnected. This likely comes down to the fact that powering an induction range alongside a heat pump in the winter could draw more energy than Powerwall 3 is capable of outputting instantaneously.

Attention Getters

These 11 homes attracted a lot of attention - according to a broker working on Utopia’s team, they had requests to see or buy these homes coming from across the country. Priced around $544,900, these homes are about $150,000 higher than Houston’s median list pricing for similarly sized townhomes, but the benefits are clear for many buyers who will recoup these additional costs over the home’s life.

Utopia has acknowledged the demand for Tesla-powered and future-proofed homes like these and is already planning to build more in the future. This is an excellent showcase of what an electric-powered future could look like, and we’re excited to see more of these types of homes and neighborhoods in the future.