It means that an exterior lamp (bulb) is defective. I think you are talking about the indicator to the left of the open door light, directly below the airbag light. Pg. 56 of your owners manual. For instructions on replacing bulbs refer to page 99. If you don't have an owners manual, email me and I will send you a link to download one.
AGAIN WITH THAT OWNER'S MANUAL THING! I CHECK FOR ONE A BUNCH OF TIMES AT THE SHOP WHEN WORKING ON CUSTOMER'S CARS. LOT OF INFO. IN THERE EVEN FOR SOMEONE WHO WORKS ON THEM FOR A LIVING. A REAL TIME SAVER AND A MUST HAVE FOR EVERY AUTO OWNER.