[jaclaz]

For the record, it is not like car repair is made "easy" by the manufacturers, I have seen over the years quite a few cases where the "original" (issued by manufacturer only to official dealers) ODB2 connected software was needed to reset an alarm on the car computer.

It may be that the "third party" program missed at the time the particular feature (AFAIK it is all revolving about reverse engineering the "original" and that later releases had it.

And another "trend" in the car world is that of only selling as spare "non-serviceable assemblies", and regularly some smart guy manages to find out that the assembly is actually serviceable and that replacing (say) a small o-ring or gasket and/or with a couple solderings an used assembly can be reconditioned and work again for years at a fraction of the cost.

A good example is the "navigating wheel" on many BMW's, dealers will tell you that it is a €300-400 job to replace it, whilst 99% of the time is half an hour top including disassembling it, soldering a couple broken tin joints and re-assembling it.