If it is an LED that would need to be replaced I am sure you could remove it and find a suitable replacement elsewhere if it is true that the bulb is not available from the oem. I would try testing it out check the continuity and or see if you can power it with another source incase it is a loose connection.
I have purchased LED's from here but it was a while ago. Mostly modified led's for incandescent bulbs on older cars.
www.superbrightleds.com
I have purchased LED's from here but it was a while ago. Mostly modified led's for incandescent bulbs on older cars.