The OP has a 1999 ML and does not have the emergency selector lever release. That feature came with the advent of the 2000MY
The OP has a 1999 ML and does not have the emergency selector lever release. That feature came with the advent of the 2000MYInsert a pencil through the small flap adjacent to the "D" on your shifter. When you hit the right spot, you can move the stick out of Park.
Instructions are in your owner's manual.