Due to age and sun exposure, the interior wood trim cracks and the finish gets a cloudy haze. Replacement if the trim would be the most common solution to the problem.
Car Problem Reports
Mercedes-Benz E320 Interior Wood Trim Cracks Due to Age and Sun Exposure
Mercedes-Benz E320 Problem
Average Mileage: 166,000 mi (100,000 mi - 232,000 mi)