Car has 24K miles. Transmission is stuck in limp-home mode. Have owned since 6K

Hello, I'm not really sure why MB would need to scan the transmission control module. There are plenty of professional scanners out there with full access. Driving a vehicle too little is just as hard on a vehicle as driving it too hard. The very least of the concern is that the parts in the transmission aren't getting a constant bath of transmission fluid, instead, they are getting a constant bath of condensation and heat/cool cycles. Also, this may have been a lemon law buyback, or the owner could have turned the vehicle in after they got tired of dealing with the issue. The other thing is that the battery should be on a battery tender/charger all the times if it is not being driven because, no matter what, there is always a light draw on the battery. Also, keep in mind that the vehicle was engineered for highway speeds in Germany, so much faster than we drive here. In light of that, make sure it gets some highway time every once in a while.