I purchased an Autoenginuity software package with the enhanced Mercedes interface, which allows access to lots of sensors. I am just starting to get to use it. Here, I have my laptop on the seat next to me and I am waiting for the transmission oil temp to reach 80 degrees C, so I can use the special tool from MB to measure the level. This is a lot easier than taking off the soundproofing underneath and getting a thermal read off the transmission pan. Looks like a good program.