The sunroof may not work correctly due to failed components as a result of age and wear. Repairing a sunroof can be labor intensive and very costly.
Car Problem Reports
Mercedes-Benz 300TE Sunroof Components May Fail Due to Age and Wear
Mercedes-Benz 300TE Problem
Average Mileage: 192,175 mi (188,000 mi - 196,350 mi)
Visitor, 1993 Mercedes-Benz 300TE, 196,350 mi
I can hear the motor try to open sunroof but it only opens in the angled up position. Will not slide fully open.