These transmissions require rigourous fluid changes or they can suffer from various problems often irreversible. From the readouts it would appear you have more than one canbus registered fault which may be unrelated to the gearbox. The only easy thing to check gearbox wise would be the canbus/electrical connections to the box are OK / not fluid contaminated- unfortunately they may be internal. http://www.mbclub.co.uk/forums/engine/130303-w169-cvt-problem-2.html