The setup procedure for the diagnostic cable inside your Model3 requires a complete
shutdown of the vehicle in advance. Approximately 10 minutes should be planned
for the installation of the adapter cable. For a removal of the adapter cable, the same sequence of steps is required.
No external access to the vehicle is allowed during installation.
The provided installation instruction must be observed accordingly.
The bundle version contains a pre-tested standard ELM327 compatible OBD dongle from EMDS.
Unfortunately the major resellers are offering the ELM327 OBDII compatible hardware nowadays only with fluctuating product quality.
Here is an example of our current collection of OBD dongles that aren’t working correctly …
Therefore, no other recommendations from the app developer side are made beside the OBDLINK MX OBD dongle Amazon-Link
which is reliable but much more expensive too.