[jacquesm]

Think of a Tesla as a laptop computer with a very large battery bank, some powerful inverters and electric motors.

It has all the complexities of a cluster on wheels, tons of software systems and as a result is hard to diagnose properly.

So the first 'fancy equipment' you will need is a set of proper diagnostics equipment, which is - given the complexity involved - most likely supplied by the manufacturer or not at all.

What Tesla could do - but which they would hate because it is part of their competitive edge - is to release full schematics and software listings, but no other ordinary car manufacturer does this, nor are they required to by law.

Good thing too because if the Toyota ECU was anything to go by the industry would look pretty dumb.