The Led Strip lights are designed to last over 100,000hrs, so it's very rare that these fail. If your lights are not working it is more than likely the transformer that runs the lights. First check light switch of course and then check the small din plug connections where light connects at top section of inner door.

Parts
Transformer part number is HUS-SC23-TRANSFORMER, cost is $29.00, complete below info to start process.
Led Light part number is HUS-SC23-LED, cost is $29.00, complete below info to start process.