On my 1994 FZJ80, the 'D' light went out at 201K miles. It's been out for a few weeks of daily driving.
Today I read that some folks here have brought the 'D' light back to life by smacking the dashboard.
I was a little skeptical, but figured what the hell, can't hurt to try. Just went out and tried it . . . and it worked!! My 'D' glows green again!
Had to smack with moderate force, but of course not excessively hard to cause damage. Created enough vibration to cause the speedometer needle to jiggle.
Took about a minute of smacking various locations around the dash. If at first you don't succeed, keep trying for a few minutes.
Created vibrations on the clear plastic part of the dashboard near the 'D' light itself, on top of the dash below the window and above the instrument panel, on the steering wheel, and on various other spots around the dash.
Unfortunately, this technique did not work on my 2002 UZJ100.