intermittent electrical problems in mercedes ml350 2008

What is your question?

I have a Mercedes ml350 and it keeps having an intermittent issue every few weeks to months where they system will show my car is not in gear and it would not go in to gear. The signals will not work or radio and then they will after I stop turn off car for a while then back on. . The battery will drain if left a long time like for days. I replaced both batteries recently then went on vacation for a week in 17 degree weather.

What makes this problem better or worse?

not sure

How long has your 2008 Mercedes-Benz ML350 had this problem?

for about 6months to year