If you have one of these neat BlueTooth devices for running Torque Android .......



............. then don't leave it plugged into the OBD2 Diagnostic Port with the vehicle parked up for a few days.

I left mine connected over the Easter weekend and the battery was too far down to start the vehicle this morning. The Diagnostic Port has a permanent live feed so the BT adapter was powered on even with the vehicle locked.

Graham

 

Bad luck and easily done. You missed the Gipsy's warning!!
https://www.jaguarforums.com/forum/x...-ground-90481/

 

It is also the ideal connector if you want to connect some sort of solar charging system.
That is if we ever get any sun here in the UK!