Things like replaceable light bulbs and brake pads are considered maintenance items and are covered for 12,000 miles. The headlight LEDs are not replaceable short of replacing the entire lamp assembly. That should be covered for 36,000 miles. Pm member Jeepcares with the question, they are FCA customer service.
Current: 2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6
Previous: 2000 Grand Cherokee Laredo I6, 1979 CJ7 I6 Quadratrac