Mazzy

I just recently purchased a 2015 S63, coming from a 2011 A8. For my Audi I had VCDS computer program that allowed me to read all the modules for error codes as well as letting me code each module. Is there an equivalent program any of you use? I see a lot of options with varying prices.

Plutoe

Investigate the current factory diagnostic system, aka XDOS

HAWKiS63

Is there also a way to got into the (secret) Engineering Menu using these tools? Even my dealer needs a passcode for this, that they don't have or get from MB.

Mazzy

I'm also curious about that. Because there's a ton of info online about programming the D4 A8, but so far I haven't seen anything about the W222 S class.

Plutoe

The less learned forget that coding and programing occur and all makes of cars, trucks, buses---whats the big deal except that the owners of the high end cars could GAS about that. That's what mechanics are for. Its the used car guy who is broke or out of a job that's looking for a cheap way to repair his ride.
All the developer and special functions are accessible if you have the keys and the knowledge to use them