e320 trans issue
 

Howdie guys,,i hope some of you guys can coach me as to what to do,,,,two years ago i spilled some drink down my console,at the cup holders,,and wound up having to replace the SIM,,,and the trans module it would not shift out of low,,This was two years ago,,but a week ago,,,my battery went all the way down,,and when i got it charged back up,,,the car,,,when cold start and i shift to reverse sor of grabs,,no noise,,i can back up and when i pull forward it wont shift out of low,,but i can back up pressing the break,and then kill it,and start again and its perfect all day till i let it sit a long while,,This started when my battery ran all the way down,,it has shifted perfect for two years,,i think my dead battery may have caused an issue,,please advise guys