WenmarOpen by Wenmar Pro

Service bulletin PS524

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10123321
Published by NHTSA2017-11-14
Manufacturer's numberPS524
Manufacturer's date2017-10-23
NHTSA componentELECTRICAL SYSTEM:WIRING: REAR COMPARTMENT/TRUNK

NHTSA's summary

PITSTOP - OPTIMA TRUNK TORSION BAR ADJUSTMENT - On some 2016-2018MY Optima (JFa) vehicles, there may be a concern with the trunk not opening as designed when using transmitter key fob or Smart Trunk feature. This may be caused by improper assembly of the trunk torsion bar (A) and trunk lid hinge. Follow the procedure in this publication to correct this concern.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Wiring and fuses

Vehicles listed
KIA OPTIMA2016, 2017, 2018

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
PI1802WX_TSB_R72020-02-03. Service bulletin. PRODUCT IMPROVEMENT CAMPAIGN: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X) - This bulletin has been revised to include additional information.This bulletin provides information related to the Technical Service Bulletin previously published in July 2018 (PI1802, Rev 6, 01/31/2019) titled "Knock Sensor Detection System - ECU Logic Improvement". Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below returns to the dealer with Diagnostic Trouble Code (DTC), P1326.
TSBELE1632019-06-04. Service bulletin. TSB: PARASITIC DRAW INSPECTION AND REAR DOOR LATCH REPLACEMENT - This bulletin provides the procedure to inspect for a parasitic draw and, if necessary, replace one or both rear door latches on some of the following vehicles which may experience a discharged 12v battery.
TSBELE126R12017-08-25. Service bulletin. TSB: SERVICE ACTION: REAR PERSONAL LAMP REPAIR (SA273) - This bulletin provides information related to the rear personal lamp on some 2016MY Optima (JFa) vehicles, produced from September 11, 2015 to August 13, 2016, which may experience a blown Interior Lamp 10A fuse resulting in inoperative interior lamps. Follow the procedure outlined in this bulletin to increase the bulb circuit and the bulb reflector clearances to prevent internal shorting of the lamp assembly resulting in a blown Interior Lamp 10A fuse, and if necessary, replace the Interior Lamp 10A fuse. Replace the lamp only if housing deformation is noticed during the repair procedure.