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All You Need to Know about the Tesla Model 3 & Y Diagnostic Tools and Apps
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All You Need to Know about the Tesla Model 3 & Y Diagnostic Tools and Apps

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The Tesla Model 3 and Model Y are not equipped with a standard OBD2 port. Instead, a console connector is available at the back seat of the vehicle, wherein you can plug-in an OBD2 tool or device using a Tesla OBD2 adapter. 

The Tesla Model 3 and Y’s diagnostic port require a diagnostic port cable adapter and an ELM327 or STN1110 compatible OBD2 tool or device. The most commonly used OBD2 tools for Tesla Models are the OBDLink LX or MX Bluetooth devices. For the diagnostic port cable adapter, we highly recommend our very own OHP OBD2 Adapter for Tesla Model 3 & Y 2019-2020 Build

The security features programmed in the Tesla Model 3 and Y make it hard to configure or hack the system and the critical functionalities of the vehicle. Thus, connecting to the vehicle's diagnostic port will only allow users to access and display the vehicle’s live data using diagnostic apps or software. The main apps used to display live data are the Scan My Tesla app (Android only) and the TM-Spy app (Android and iOS). 

With the Scan My Tesla app, you can view the following live statistics:

- Battery power / voltage / current / temperatures

- Drive Unit electric power / torque / horsepower / RPM / temperatures

- Battery lifetime stats, capacity estimates, and mileage

- 12V system current, voltage, temperature

- Trip recording and statistics, including charging

- HVAC controls and readings

Here’s a live demo video from Bjørn Nyland on the Scan My Tesla app:

With the TM-Spy app, you can display the following information:

- Individual Cell voltages (84 or 96 depending of size of battery)

-Maximum, minimum cell voltages and delta between the two.

- Histogram showing how well balanced the battery pack is

- Battery pack temperature sensor readings. 16 pairs of readings (inlet/outlet coolant temperatures)

- Total battery voltage and current during driving and charging

- Pack capacity and remaining energy in kWh

- Mileage driven on current battery pack (if you swapped packs the pack mileage will be different for the dash display)

- Lifetime battery discharge and charge energy in kWh

Here’s a live demo video from David Drives Electric on the TM-Spy app: 

Most of the data used by the apps to display the Tesla Model 3 information came from the Tesla Model 3 community that identified and gathered the Tesla Model 3’s CAN bus IDs and data. You can check out the document here.

Special thanks to the Tesla Model 3 community that came up with all these valuable information, you can check them out here

To avail of the OHP OBD2 adapter for Tesla Model 3 2019-2020 Build, check out the product below: