Model 3 Diagnostic Cable RevC Cable
Tesla Model 3 Diagnostic Cable – OBD-II Adapter – Jan 2019 Onwards
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Tesla Model 3 Diagnostic Cable – OBD-II Adapter – Jan 2019 Onwards


  • Model 3 – Post January 2019 Build Date Only.

In stock (can be backordered)

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Tesla vehicle Diagnostic Cable Adapter – For Tesla Model 3 Diagnostic data port.

The Tesla Model 3 isequipped with a propitiatory diagnostic data connectors. This connector gives users access to a lot of useful information about your Model 3, such as battery capacity, battery voltage, drive-train output, HVAC data etc..

There are a few 3rd party apps that are available, that with the use of an OBD-II module, and a diagnostic cable, will read this data and display it in human readable form.

These cables can also be purchased as part of a Tesla Diagnostic Bundles HERE

Location of Diagnostic connector

Model 3

The Model 3 Port is located at the rear of the centre console and accessible from the rear footwell.

  • Model 3 – Post January 2019 Build Date Only.

There are two versions of the connector depending on when your Model 3 was built. We presently only supply cables for post January 2019 BUILD DATE Models.

Please note that your vehicles BUILD DATE is NOT the same as the date of first registration.

The Tesla Model 3 MUST be shut down before inserting the cable in to the loom.  The shut down takes 15 minutes to complete and is performed from the screen within the vehicle.  Failure to shut down the car before inserting the cable into the loom may damage your vehicle and or cause faults.

Application software And Hardware.

You will need to purchase an OBD-II adapter as well as the application software to decode and display the data off the diagnostic connector.

Application software currently available is ScanMyTesla (Android) and TMSpy For Andriod Or TMSpy For IOS. Either app will work with the ELM327 compatible OBD-II bluetooth adapter, with the above cable. Care must be taken when selecting the OBD-II adapter, as not all cheap adapters support the CAN bus protocol (even if they say they do). We would recommend an ELM327 V2.2, but any high quality adapter that supports the ST command set is recommended. Please refer to application software for further help with ODB-II adapter selection.

Please note.  Connecting equipment to your Tesla is done entirely at your own risk.  EV Accessories Limited will not be held responsible for any damage caused to your vehicle through incorrect use of this product. The user is responsible for checking for any damage to the cable prior to use. both upon receipt and for each and every use.

Our Tesla Model 3 Diagnostic cable should work with the Model Y, however we are unable to test it as we have no model Y available in the UK.

Additional information

Weight .500 kg
Dimensions 100 × 60 × 20 mm
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