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Service bulletins for the 2018 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.

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

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Only bulletins with component: Equipment and accessories are shown. Show all

Bulletins, newest first
SC205_DP2022-08-18. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO - This document is the announcement to the dealer principals that Kia is conducting a Voluntary Emissions Service Campaign on 2016-2020 MY Kia Optima vehicles equipped with the 2.0L Turbo-GDI engine to update the emission related logic of the Engine Control Module "ECM" with an improved version to ensure compliance with emissions regulations.
TSB_ENG222_R42021-12-23. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES - 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 on diagnosing and/or repairing some 2011-2021MY vehicles (refer to the tables on pages 8-9 for applicable models and engine), which may exhibit a symptom of excessive oil consumption.
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.
PI1802YZ_TSB_R52021-12-01. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ENGINE AND ENGINE COOLING. PRODUCT IMPROVEMENT CAMPAIGN: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802Y/Z) - 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 the Technical Service Bulletin previously published PI1802 titled "Knock Sensor Detection System - ECU Logic Improvement" equipped w/THETA II engine. 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 (Knock Signal Range/Performance).
TSB_CHA1062021-08-25. Service bulletin. EQUIPMENT; STEERING; EQUIPMENT ADAPTIVE/MOBILITY. TECHNICAL SERVICE BULLETIN: PARTIAL REPAIR OF THE DUAL PINION MOTOR DRIVER POWER STEERING SYSTEM - This bulletin provides information regarding the availability of partial repair (depending on faulty components) of the Dual Pinion Motor Driven Power Steering (DP-MDPS) system on some 2016-2021MY~ Kia vehicles (refer to the table below) in order to enhance customer satisfaction by promoting a cost-effective repair/replacement of a faulty related part, instead of replacement of the complete DP-MDPS assembly.
TSB_ENG222_R12021-02-02. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA ENGINES - 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 on diagnosing and/or repairing some 2011-2019MY vehicles (refer to table below for applicable model and engine), which may exhibit a symptom of excessive oil consumption.
TSB_CHA098_R32020-09-03. Service bulletin. EQUIPMENT; SERVICE BRAKES, HYDRAULIC:FLUID. TECHNICAL SERVICE BULLETIN: IBAU SYSTEM REPAIR FOR NOISE AND AIR BLEEDING - 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 repair procedure for the Integrated Brake Actuation Unit (iBAU) system on some 2014-2019MY 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.
PS6752020-09-03. Service bulletin. EQUIPMENT; SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER. PITSTOP - BRAKE CALIPER LEAK INSPECTION - This PITSTOP provides information related to a brake caliper fluid/oil substance found on some Kia vehicles, due to possible excess assembly oil applied during assembly.
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.
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.
PS6382020-01-04. Service bulletin. EQUIPMENT. PITSTOP 638: HVAC TEMPERATURE BLEND DOOR INOPERATIVE, TICKING AND/OR MAKING A POPPING NOISE - This Pitstop provides information regarding an inoperative, or clicking and popping noise concern from the heater box blend door.
TSBCHA084_R42019-12-09. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING; STEERING. TECHNICAL SERVICE BULLETIN: PARTIAL REPAIR OF C-MDPS MOTOR, ECU AND/OR STEERING COLUMN HOUSING - This bulletin has been revised to include additional information.This bulletin provides information regarding the partial repair of the Motor Driven Power Steering (MDPS) Motor, Electronic Control Unit (ECU) or Steering Column Housing on some 2010MY~ Kia models listed on page 5 equipped with a Column Motor Driven Power Steering (C-MDPS) unit. Follow the MDPS Flowchart (page 2) along with the MDPS DTC Table (page 3) procedure outlined in this bulletin before replacing the C-MDPS Motor, ECU or Steering Column Housing.
VPI1802_QA2018-08-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:SOFTWARE; ENGINE; POWER TRAIN. Q & A - This document is the Q & A for the new Product Improvement Campaign to provide information regarding a software update to the Engine Control Unit (ECU) to protect the engine from excessive connecting rod bearing damage.
PS5642018-06-18. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. PITSTOP - CLOCK CONCERNS ON UVO eSERVICES (UVO 3.0) - This Pitstop contains information regarding possible concerns with the clock on UVO eServices (UVO 3.0) head units installed on 2017-2018MY vehicles.
TSBBOD182_R32018-04-16. Service bulletin. EQUIPMENT. TSB - SERVICE ACTION: FLOOR CONSOLE INNER PANEL INSPECTION & CORRECTION/REPLACEMENT (SA328) - This bulletin has been revised to include additional information. This bulletin provides the procedure to inspect and correct or replace the floor console inner side panels on some 2018MY Optima (JFa) vehicles, produced from August 1, 2017 through October 27, 2017, which may exhibit a peeling condition of the panel surface.
TSBBOD182_R12018-02-12. Service bulletin. EQUIPMENT; STRUCTURE. TSB - SERVICE ACTION: FLOOR CONSOLE INNER PANEL INSPECTION & CORRECTION/REPLACEMENT (SA328) -This bulletin has been revised to include additional information. This bulletin provides the procedure to inspect and correct or replace the floor console inner side panels on some 2018MY Optima (JFa) vehicles, produced from August 1, 2017 through October 27, 2017, which may exhibit a peeling condition of the panel surface.
PS500_R12018-02-12. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). PITSTOP - PREMIUM NAVIGATION OR UVO eco WITH NAVIGATION (AVN 5.0) - This Pitstop provides information regarding the features and functionality on the latest generation Premium Navigation or UVO eco with Navigation (designated as AVN 5.0) system that is applied to some 2018MY Sportage (QL), Optima (JFa), Soul (PS), Stinger (CK), and Niro PHEV (DE) vehicles. This system features a dual core processor which should result in a faster system response and loading performance between applications as compared to the previous navigation system.

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