Apparently this a drain on the battery on my 500SL. and I am locked out of the car...two sets of key mechanisms, neither one will activate the unlocking system, and the actua,l key will not work as well! What should I do?

Try the mechanical key inside the key fob.

Yhe key inside yhe keyfob should work to get open and charge battery. Like they said 😊

Yes dont u have a skeleton jey inside your actual key?

Call a tow company and get it towed or an unlock and a jump start

I would definitely call the dealership and see what they can do

Call help line or the dealer.