One problem related to transmission gear indicator has been reported for the 1999 Ford Taurus. The most recently reported issues are listed below.
While turning into a parking place at the movie theater, the car suddenly seemed to have slipped into neutral gear, even though the gear indicator did not move from the drive position. I tried to change into reverse and drive and low gears but the car did not move. I had to have it towed and ended up needing $2,000 worth of transmission repairs. I bought the car(used-one previous owner) in Aug 2001 and I still have an auto loan which I am paying, so this bill has devastated me. I have had several "major" problems with the car, but this was the worst.