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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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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
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..
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.
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_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.
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.
PS5392018-04-16. Service bulletin. ENGINE AND ENGINE COOLING. PITSTOP - ENGINE COMPONENT RE-USE GUIDELINES - In general, parts and components removed during engine repairs should be considered serviceable, and should be thoroughly cleaned and transferred to the new engine.
TSBENG1782018-02-12. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. TSB - DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC18) - 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_R22018-02-12. Service bulletin. ENGINE. TSB - SERVICE ACTION: 2.4L ENGINE START LOGIC IMPROVEMENT (SA316C) - 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 March 31, 2017 through November 20, 2017, which may experience a very slight surging sensation with the cruise control activated.
TSBENG177CR12018-01-16. Service bulletin. ENGINE AND ENGINE COOLING. TSB - SERVICE ACTION: 2.4L ENGINE START LOGIC IMPROVEMENT (SA316C) REV 1 - 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 March 31, 2017 through November 16, 2017, which may experience a very slight surging sensation with the cruise control activated.
TSBENG177C2017-12-22. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING. TSB - SERVICE ACTION: 2.4L ENGINE START LOGIC IMPROVEMENT (SA316C) - 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 March 31, 2017 through November 16, 2017, which may experience a very slight surging sensation with the cruise control activated.

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