Tesla's Latest Software Update 2023.26 Adds More Features to 'Service Mode'

Tesla has added more health checks to its Service Mode Not a Tesla App
Tesla has added more health checks to its Service Mode
Kevin Armstrong

On the heels of the previous updates Service Mode, Tesla is back with more features in update 2023.26.

Thanks to reader NinerByNature, we have a look at some new Service Mode health checks. The additions to service mode include tests for the steering wheel stalks, the low-voltage battery, airbags and other vehicle diagnostics.

Airbags Diagnostics

The new 'Airbags Screen' is the first upgrade. Here, users can check the status and availability of all vehicle airbags. This includes Tesla's newer far-side airbag, which helps prevent front passengers from colliding against each other. The diagnostic screen will display the location of each airbag and state whether it's operational or if there are known faults.

Tesla has added more health checks to its Service Mode Not a Tesla App
Tesla has added more health checks to its Service Mode

Steering Wheel and Stalks Checks

The new 'Steering Wheel and Stalks' service is particularly useful for troubleshooting. With it you can verify the functionality of various key components like stalks, scroll wheels, steering wheel, parking brake, and horn, ensuring smooth operations and minimizing the chance of unexpected issues on the road.

Low-Voltage Battery

The low-voltage battery reading feature offers detailed data, including voltage, charge level, and current. These details let you check on the health of your low-voltage battery and potentially replace it preemptively before it becomes an issue. Most of the vehicle's electronics are run off of the low voltage battery, and a non-working battery could leave you stranded.

Camera Pitch Verification

Tesla has added more health checks to its Service Mode Not a Tesla App
Tesla has added more health checks to its Service Mode

Last but not least, this update appears to allow you to verify the pitch of each of the vehicle's cameras. This is presumably used to verify whether the camera pitch needs to be adjusted, either physically or through Tesla's automated camera calibration feature.

Earlier today we reported on some 2023 vehicle models being recalled due to the front cameras being misaligned, and this feature likely helps diagnose those issues. The cameras play a critical role in the vehicle's functions, so it's paramount that they're aimed and functioning properly.

Building on Previous Service Mode Improvements

These updates build on the momentum set by the previously released service mode updates. Looking back at our June report, we noted Tesla's significant strides in refining its Service Mode. The update introduced diagnostic screens for seat belts, the HVAC system, and a unique feature for calibrating auto-appearing door handles on the Model S. The seat belt service menu provided a detailed visual of the safety equipment's interaction with the restraint control module (RCM), creating an additional safety-check tool for owners.

The HVAC system visualization offered an immersive understanding of the vehicle's climate control. Additionally, door handle calibration, specific to the Model S, allowed individual calibrations for these handles. Even though Service Mode was designed primarily for technicians, the detailed insights provided were a boon for owners who sought to troubleshoot and calibrate their vehicles effectively, provided they understood the implications of their adjustments. These features marked another incremental step in improving Tesla's Service Mode, setting the stage for the even more impressive updates in their latest release.