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Service bulletins for the 2015 Kia Optima

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.

268 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
CS2303_TSB2023-03-06. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN CUSTOMER SATISFACTION: ANTI-THEFT S/W LOGIC UPGRADE & DECAL INSTALLATION (CS2303) - This bulletin provides the procedure to upgrade the software logic of the Integrated Body Control Unit (IBU) or Body Control Module (BCM) system on certain 2011-2015MY Optima (TF), 2012-2015MY Optima (QF) and 2016-2020MY Optima (JF, JFa) vehicles produced within the dates outlined on page 10, which may not be equipped with an immobilizer. This logic upgrade will add anti-theft ignition start logic to the vehicle's system operation.
TSB_ELE2732023-02-02. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: HIGH-VOLTAGE BATTERY SAFETY PLUG FUSE INSPECTION AND REPLACEMENT - This bulletin provides information associated with the "Hybrid System Warranty Extension Program" (WTY029) to inspect and, if necessary, replace the High Voltage Battery (HVB) Safety Plug Fuse Assembly or Main Fuse on 2013-2016MY Optima Hybrid (TF HEV) vehicles produced from September 27, 2012 through July 22, 2015.
TSB_ELE044_R32022-05-04. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: HIGH-VOLTAGE BATTERY ORDERING AND RETURN PROCEDURE - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin outlines the ordering and return procedure for high-voltage Lithium-ion batteries equipped on EV/hybrid vehicles (hereafter referred to as "high-voltage batteries" or HVBs).
TSB_SST067_R12021-12-01. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin provides information regarding test procedure of the Bearing Clearance Tester (BCT) Special Service Tool (SST). The SST comes pre-calibrated from the supplier however, in some cases, due to variable shop compressor air pressure, the SST may need to be re-calibrated to ensure that the tool provides accurate readings when testing the engine rod bearing wear. The calibration and BCT measuring point maintenance is included in this bulletin.
TSB_ELE044_R22021-08-25. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: HIGH-VOLTAGE BATTERY ORDERING AND RETURN PROCEDURE - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin outlines the ordering and return procedure for high-voltage Lithium-ion batteries equipped on EV/hybrid vehicles (hereafter referred to as "high-voltage batteries" or HVBs).
TSB_TRA0592020-12-04. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. TECHNICAL SERVICE BULLETIN: HCU/TCU UPGRADE - FOR 100 MESH SOLENOID EQUIPPED HYBRID TRANSMISSIONS -This bulletin provides information related to a software upgrade of the Hybrid Control Unit (HCU) and the Transmission Control Unit (TCU) of some 2011-2016 MY Optima Hybrid (TF HEV) vehicles after replacement of the transmission with improved 100 mesh solonoid filters has taken place. To apply the improved logic, the HCU/TCU should be reprogrammed using the GDS/KDS download, as described in this bulletin.
TSBELE100R22020-12-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. TSB - COMBINATION TSB / SERVICE ACTION: UVO SYSTEM UPGRADE (SA222) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides the procedure for upgrading the UVO system on some 2014~2016MY Soul (PS), Sorento (XMa), Optima (TF/QF), Forte (YD) and Sportage (SL) vehicles to address "Incoming ring volume too loud" complaints when using certain smartphones (non-iPhone). Additionally, in 2014MY vehicles the upgrade will also improve Bluetooth connectivity and voice recognition.
PS4432020-12-03. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; EQUIPMENT. TSB - USE OF AFTERMARKET USB CHARGING CABLES IN USB/12V PORTS - This article provides information regarding the use of USB ports and 12V power outlets to connect/charge mobile phones. Customers may experience issues with their head units that may be related to the use of aftermarket USB charging cables, including; * Electrical interference and limited or no functionality when attempting to play music, or when charging a device through the USB port * Excessive static or noise when listening to the audio source * Malfunctions and screen freeze of the head unit screen * Slow down of the system response while device is plugged in * Music will not play from iPhone 5 or 6 with Kia iPod cable and aftermarket adapter * No or limited functionality when trying to play music from an Apple device
TSB_CHA084_R62020-12-02. Service bulletin. ENGINE AND ENGINE COOLING; STEERING; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: PARTIAL REPAIR OF C-MDPS MOTOR, ECU, WORM GEAR AND/OR STEERING COLUMN HOUSING - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information regarding the partial repair of the Motor Driven Power Steering (MDPS) Motor, Electronic Control Unit (ECU), Worm Gear Assembly or Steering Column Housing on some 2010MY~ Kia models listed on page 8, equipped with a Column Motor Driven Power Steering (C-MDPS) unit.
TSB_CHA084_R52020-12-02. Service bulletin. STEERING; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: PARTIAL REPAIR OF C-MDPS MOTOR, ECU, WORM GEAR AND/OR STEERING COLUMN HOUSING - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information regarding the partial repair of the Motor Driven Power Steering (MDPS) Motor, Electronic Control Unit (ECU), Worm Gear Assembly or Steering Column Housing on some 2010MY~ Kia models listed on page 8, equipped with a Column Motor Driven Power Steering (C-MDPS) unit.
PI1802_TSB_R122020-09-03. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. PRODUCT IMPROVEMENT - TSB_PI1802_R2 - Knock Sensor Detection System - ECU Logic Improvement - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information related to a software update to the Engine Control Unit (ECU) to install the Knock Sensor Detection System (KSDS) in order to protect the engine from excessive connecting rod bearing damage.
TSB_CLI0492020-07-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL; EQUIPMENT:APPLIANCE:AIR CONDITIONER. TECHNICAL SERVICE BULLETIN: PARTIAL REPAIR - ELECTRICAL A/C COMPRESSOR - This bulletin provides information regarding partial repair of the Air Conditioning (A/C) compressor assembly on some 2011MY~ Optima (TF HEV, JF HEV/PHEV/EV), Soul (PS EV) and Niro (DE HEV/PHEV/EV) vehicles.
PI1802_TSB_R112020-07-06. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TSB: PRODUCT IMPROVEMENT CAMPAIGN : KNOCK SENSOR DETECTION SYSTEM (KSDS) LOGIC IMPROVEMENT (PI1802_R11) - This bulletin has been revised to include additional information. This bulletin provides information related to a software update to the Engine Control Unit (ECU) to install the Knock Sensor Detection System (KSDS) in order to protect the engine from excessive connecting rod bearing damage.
PI1802_TSB_R92020-03-05. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TSB - PRODUCT IMPROVEMENT CAMPAIGN - KNOCK SENSOR DETECTION SYSTEM - ECU LOGIC IMPROVEMENT (PI1802) Rev.9 - This bulletin provides information related to a software update to the Engine Control Unit (ECU) to install the Knock Sensor Detection System (KSDS) in order to protect the engine from excessive connecting rod bearing damage.
PI1802WX_TSB_R72020-02-03. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:WIRING. 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.
PI1802_TSB_R82019-12-09. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING. TSB - Product Improvement Campaign: KNOCK SENSOR DETECTION SYSTEM - ECU LOGIC IMPROVEMENT (PI1802) - This bulletin has been revised to include additional information. This bulletin provides information related to a software update to the Engine Control Unit (ECU) to install the Knock Sensor Detection System (KSDS) in order to protect the engine from excessive connecting rod bearing damage.
PI1802_TSB_R72019-10-03. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. PRODUCT IMPROVEMENT CAMPAIGN - KNOCK SENSOR DETECTION SYSTEM - ECU LOGIC IMPROVEMENT (PI1802) - This bulletin provides information related to a software update to the Engine Control Unit (ECU) to install the Knock Sensor Detection System (KSDS) in order to protect the engine from excessive connecting rod bearing damage. The KSDS detects vibrations indicating the onset of excessive connecting rod bearing wear. It is designed to alert the driver at an early stage of bearing wear before the occurrence of severe engine damage, including engine failure. If vibrations caused by bearing wear start to occur, the Malfunction Indicator Lamp (MIL) will blink continuously, and the vehicle will be placed in Limp Home Mode. This will reduce further damage to the engine and ensure that the vehicle occupants are not exposed to the risk of a more severe engine failure. At that time, Diagnostic Trouble Code (“DTC”) P1326, specific to the KSDS, will be recorded in the ECU. The vehicle can continue to be operated for a limited time in Limp Home Mode, but it will accelerate slowly and have a reduced maximum speed. Also, engine RPMs will be limited to approximately 1800-2000 RPM.
TSBCHA0982019-09-06. Service bulletin. ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL. TSBCHA098: IBAU SYSTEM REPAIR GUIDE FOR NOISE AND AIR BLEEDING - This bulletin provides the repair guide for the Integrated Brake Actuation Unit (iBAU) system on some 2014-2019MY Kia EV/Hybrid/Plug-In Hybrid vehicles listed (see table), which may exhibit a “Honking” (hissing) noise due to air remaining in the brake fluid system.
TSBENG205_R12019-04-30. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TSB: SERVICE ACTION: WIRING SIGNAL INTERFERENCE CHECK & ENGINE NOISE INSPECTION (SA379) - This bulletin provides information related to an expanded diagnostic test that is now required on a number of vehicles previously diagnosed with Diagnostic Trouble Code ("DTC") P1326. Using the procedures published in TSB PI1802W/X and PI1803W/X, the subject vehicles were diagnosed and determined to require an engine replacement and are currently being held at dealers pending repair. As a result of additional field data collection and analysis, the initial diagnosis method has been updated to improve test result accuracy. Prior to performing an engine replacement on any of the VINs affected by this Service Action, the engine condition needs to be re-assessed utilizing an updated/expanded diagnostic process.
TSBENG2052019-04-30. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TSB: SERVICE ACTION: WIRING SIGNAL INTERFERENCE CHECK & ENGINE NOISE INSPECTION (SA379) - This bulletin provides information related to an expanded diagnostic test that is now required on a number of vehicles previously diagnosed with Diagnostic Trouble Code ("DTC") P1326. Using the procedures published in TSB PI1802W/X and PI1803W/X, the subject vehicles were diagnosed and determined to require an engine replacement and are currently being held at dealers pending repair. As a result of additional field data collection and analysis, the initial diagnosis method has been updated to improve test result accuracy. Prior to performing an engine replacement on any of the VINs affected by this Service Action, the engine condition needs to be re-assessed utilizing an updated/expanded diagnostic process.
PI1802WX_TSB_R52019-04-30. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:SOFTWARE. TSB: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X) - 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.
PI1802WX_TSB_R42019-04-30. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:SOFTWARE. TSB: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X) - 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.
PS515_R22019-03-18. Service bulletin. ELECTRICAL SYSTEM. PITSTOP: DTC P1B25/P1B77 ? 125 AMP HV FUSE INSPECTION - This bulletin has been revised to include additional information. When addressing a concern related to the 2011-2016MY Optima Hybrid (TF HEV) High Voltage (HV) warning light ON and KDS detects a primary DTC P1B25 (HV Path Fault) and secondary DTC P1B77 (HV Pre-Charge Fault), then the 125 Amp High Voltage Battery Fuse (red label), if not yet replaced with the newer 150 Amp, should be inspected for an intermittent and/or an open condition. The high voltage fuse is part of the safety plug located in the trunk.
PS5872019-02-19. Service bulletin. ELECTRICAL SYSTEM. PITSTOP: P/HEV NO START ? SHIFT BEFORE READY - This Pitstop provides information regarding possible customer complaint of intermittent ?No-Start?.
VPI1802_TSB_R52019-02-19. Service bulletin. ELECTRICAL SYSTEM. PRODUCT IMPROVEMENT CAMPAIGN - This bulletin has been revised to include additional information. This bulletin provides information related to a software update to the Engine Control Unit (ECU) to install the Knock Sensor Detection System (KSDS) in order to protect the engine from excessive connecting rod bearing damage.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.