My light behind an LCD display for clock/oil level went dark. I knew from experience that a bulb was blown. Once I got the part number and checked with dealer 30 miles away bulb was $8.80. Did some research, cross referencing the bulb and found it is used in the other 2 German manufacturers dashes also. Got 3 bulbs from MB for $10 and their dealership is 7 mins from my home. Just FYI...