car has no gears on 1998 Mercury Sable

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
car starts but when shift to gear have no gears s
(1) Answer
Start with the basics - check the fluid. Is it low? Low fluid will prevent engagement.

If it's full, is it brown or black? Could be a sign of internal damage.

Last, there is a remote chance of a Transmission Range sensor problem. Testing that sensor would be a good idea.