TSB - SERVICE ACTION: OUTSIDE REAR COMBINATION LAMP HARNESS REPLACEMENT (SA334) - This bulletin provides the procedure to replace the outside rear combination lamp harness on some 2016-2017MY Optima (JFa) vehicles, produced from September 25, 2016 through March 16, 2017, which may exhibit an intermittent inoperative brake light with the possibility of a ?Check brake light? warning on the instrument cluster display.
