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Service bulletins for the 2018 Kia Sorento

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.

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

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Bulletins, newest first
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.
VPI1802WX_TSB_R32019-03-18. Service bulletin. ENGINE. VEHICLE PRODUCT IMPROVEMENT: 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..
TSBELE1652019-03-18. Service bulletin. STRUCTURE:BODY:DOOR. TSB: DRIVER?S DOOR MODULE LOGIC IMPROVEMENT - This bulletin provides the procedure to improve the logic of the Driver?s Door Module (DDM) on some 2017-2018MY Sorento (UMa) vehicles, produced from April 4, 2016 through August 23, 2017, which may experience the absence of the Auto Door Lock/Unlock option select in the instrument cluster.
TSBCHA060_R42019-03-18. Service bulletin. STEERING. TSB: ECU UPGRADE ? STEERING LOGIC IMPROVEMENT -This bulletin has been revised to include additional information. This bulletin provides information related to the MDPS ECU software upgrade for some 2011-2014MY Optima (QF), produced from August 2, 2010 through July 27, 2014, and 2016-2018MY Sorento (UMa) vehicles, produced from October 27, 2014 through August 22, 2017, which may experience a notchy feel in the steering wheel.
PS5902019-03-18. Service bulletin. VISIBILITY; VISIBILITY:WINDSHIELD WIPER/WASHER. PITSTOP: BLOCKED WINDSHIELD WASHER NOZZLES ON VEHICLES EQUIPPED WITH WASHER HEATERS - This Pitstop provides information regarding blocked windshield wiper nozzles on some 2016MY~ Sorento (UMa) and 2017MY~ Sportage (QL) vehicles equipped with windshield washer heaters (A). Mixing tap water (?) and concentrated windshield washer fluid can cause corrosion of the heater element due to the mineral content of tap water.
VPI1802WX_TSB_R22019-02-19. Service bulletin. ENGINE AND ENGINE COOLING. 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 5, 12/20/2018) 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.
VPI1802_TSB_R62019-02-19. Service bulletin. ENGINE AND ENGINE COOLING. 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.
TSBENG083_R12019-02-19. Service bulletin. FUEL SYSTEM, GASOLINE. TSB: SPECIAL SERVICE INFORMATION & SPECIFICATIONS FOR GDI HIGH PRESSURE FUEL SYSTEM - This bulletin has been revised to include additional information. This bulletin provides information relating to all Kia vehicles equipped with Gasoline Direct Injection (GDI) engines. In these engines highly pressurized gasoline is injected via a common fuel rail and injectors that deliver fuel directly into the combustion chamber of each cylinder. In comparison, in a conventional Multi-Point Fuel Injection (MPI) engine, the gasoline is injected into the intake port of each cylinder at a relatively low pressure. Due to high fuel pressure in a GDI system, servicing the GDI system requires special attention and handling procedures. This bulletin provides special service information and specifications for the GDI fuel system components.
TSBCHA084_R12019-02-19. Service bulletin. STEERING. TSB: REPLACEMENT OF C-MDPS MOTOR AND/OR ECU - 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 and/or Electronic Control Unit (ECU) on the listed Kia models with a column mounted C-MDPS unit.
TSBCHA060_R32019-02-19. Service bulletin. STEERING. TSB: ECU UPGRADE ? STEERING LOGIC IMPROVEMENT - This bulletin has been revised to include additional information. This bulletin provides information related to the MDPS ECU software upgrade for some 2011-2014MY Optima (QF), produced from August 2, 2010 through July 27, 2014, and 2016-2018MY Sorento (UMa) vehicles, produced from October 27, 2014 through August 22, 2017, which may experience a notchy feel in the steering wheel.
VPI1802_OWNER_SO2019-02-19. Service bulletin. ENGINE AND ENGINE COOLING. Dear Kia Sorento Owner: Kia Motors America, Inc. is conducting an important Product Improvement Campaign to perform a software update on all 2016-2018 MY Sorento vehicles equipped with 2.4L Gasoline Direct Injection (?GDI?) and 2.0L Turbocharged GDI (?T-GDI?) engines to protect the engine from excessive connecting rod bearing damage. The update will be done free of charge and will only involve the addition of newly developed computer software for the Engine Control Unit (ECU).
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.
TSBCHA060_R22019-02-19. Service bulletin. STEERING. TSB - ECU UPGRADE ? STEERING LOGIC IMPROVEMENT -This bulletin has been revised to include additional information. This bulletin provides information related to the MDPS ECU software upgrade for some 2011-2014MY Optima (QF), produced from August 2, 2010 through July 27, 2014, and 2016-2018MY Sorento (UMa) vehicles, produced from October 27, 2014 through August 22, 2017, which may experience a notchy feel in the steering wheel. To correct this condition, the vehicle should be evaluated using the MDPS Effort Measurement Software detailed in the repair procedure starting on page 2 to determine whether an improved steering logic should be installed in the MDPS ECU, or if an MDPS column replacement is required. To determine whether the updated MDPS ECU reflash applies to a vehicle you are working on, or whether it has already been performed, verify ROM ID using the tables in this TSB.
TSBCHA0842018-12-17. Service bulletin. STEERING; ELECTRICAL SYSTEM. TSB: REPLACEMENT OF C-MDPS MOTOR AND/OR ECU - This bulletin provides information regarding the partial repair of the Motor Driven Power Steering (MDPS) Motor and/or Electronic Control Unit (ECU) on the listed Kia models with a column mounted C-MDPS unit. Follow the procedure outlined in this bulletin.
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.
VPI1802_DSM2018-08-06. Service bulletin. ENGINE; POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. DEALER SERVICE MANAGER NOTICE - This notice advised the dealer service manager of the new Product Improvement Campaign to perform a software update to the Engine Control Unit (ECU) to protect the engine from excessive connecting rod bearing damage.
VPI1802_DP2018-08-06. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE. DEALER PRINCIPAL NOTICE - This notice advised the dealer principal of the new Product Improvement Campaign to perform a software update to the Engine Control Unit (ECU) to protect the engine from excessive connecting rod bearing damage.
TSBENG177C_R42018-08-06. Service bulletin. ENGINE; ELECTRICAL SYSTEM. TSB - SERVICE ACTION: 2.4L ENGINE STAR LOGIC IMPROVEMENT (SA316C) - This bulletin has been revised to include additional information.This bulletin provides the procedure to improve the logic of the Engine Control Unit (ECU) on some 2018MY Sorento (UMa) 2.4L vehicles, produced from September 18, 2017 through December 6, 2017, which may experience a very slight surging sensation with the cruise control activated and/or extended crank.
TSBENG177C_R42018-07-30. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TSB - SERVICE ACTION: 2.4L ENGINE STAR LOGIC IMPROVEMENT (SA316C) - This bulletin has been revised to include additional information.This bulletin provides the procedure to improve the logic of the Engine Control Unit (ECU) on some 2018MY Sorento (UMa) 2.4L vehicles, produced from September 18, 2017 through December 6, 2017, which may experience a very slight surging sensation with the cruise control activated and/or extended crank.
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.
TSBENG1872018-05-14. Service bulletin. ENGINE. TSB - SERVICE ACTION: SORENTO (UMa) 3.3L - PRE-DELIVERY INSPECTION (SA345) -= This bulletin provides the procedure to inspect the engine assembly on some 2018MY Sorento (UMa) 3.3L AWD (262 vehicles affected), produced from January 29, 2018 through February 20, 2018, which may exhibit abnormal engine noise.
TSBENG178_R12018-05-14. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. TSB - DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC18) - This bulletin has been revised to include additional information. This bulletin provides information related to extracting ?in use performance tracking? emissions data from the Engine Control Unit (ECU) of certain vehicles sold in California.
TSBENG177C_R32018-04-16. Service bulletin. ENGINE AND ENGINE COOLING. TSB - SERVICE ACTION: 2.4L ENGINE START LOGIC IMPROVEMENT (SA316C) - This bulletin has been revised to include additional information. This bulletin provides the procedure to improve the logic of the Engine Control Unit (ECU) on some 2018MY Sorento (UMa) 2.4L vehicles, produced from September 20, 2017 through December 6, 2017, which may experience a very slight surging sensation with the cruise control activated and/or extended crank.
TSBENG177B_R1CLO2018-04-16. Service bulletin. POWER TRAIN. TSB - SERVICE ACTION: 2.4L SHIFT QUALITY & WAKE-UP LOGIC IMPROVEMENT (SA316B) - This bulletin has been CLOSED and superceded by TSB-ENG177C R3.

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