This warning light illuminates when the tailgate is not closed securely.
Hyundai Tucson (LM) 2010-2015 Owners Manual: Consumer information
This consumer information has been prepared in accordance with regulations issued
by the National Highway Traffic Safety Administration of the U.S. Department of
Transportation.Your HYUNDAI dealer will help answer any questions you may have as
you read this information.
HYUNDAI motor vehicles ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Spark Plug Specifications
Specification
ItemSpecificationTypeSILZKR7B11Gap1.0 ~ 1.1(0.0394 ~ 0.0433)
...