Perhaps you have them accidentally turned off.

There is the button on the instrument cluster that you push to reset the tripometer.

If you turn it the right, it brightens your dash lights. If it is turned all the way to the left, you have turned the lights off.

__________________
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".