Re: Merceded
Repairing in car entertainment electronics is not only a pain with mercedes. VW, Opel/Vauxhall, BMW.... any manufacturer has "quality assurance" traps and quirks built in.
Worse even if the screens or other parts of the whole system are integrated in the whole console with the usual individually different measurements.
In the beginning of this kind of vendor lock in, adapter electronics were available so that your original built in audio amplifier would think that your audio signal would come from an "appropriate" source.
Audi tops it off. Never ever change the car battery without making sure the voltage is buffered or your steering position will dealign as the unbuffered steering has incremental sensors but not absolute positions nor any kind of the classic track zero sense. If you manage to change the battery, you will still have to go through the process of finding a garage to make your car grudgingly accept the new part or try less appropriate means to silence the electronic nagging.
Best of all is of course Siemens TIA portal. This well refined programming environment is incompatible with different versions of the original parts databases, so keeping a collection of VM on your laptop is mandatory if any kind of hardware combination "issues" arise.
Biting the hand that feeds IT
