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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
PS5512018-04-16. Service bulletin. BACK OVER PREVENTION; LATCHES/LOCKS/LINKAGES:TRUNK LID:LOCK. PITSTOP - RATTLE NOISE FROM REAR OF THE VEHICLE (PS551) - This Pitstop contains information regarding a rattle type noise heard from the rear of the vehicle when closing a door or trunk on some 2016MY-2018MY vehicles.
PS5472018-04-16. Service bulletin. STEERING:ELECTRIC POWER ASSIST SYSTEM; STEERING. PITSTOP - EPS RECOGNTION / SAS CALIBRATION OF C-MDPS STEERING COLUMN ASSEMBLY - This Pitstop provides information regarding the Electronic Power Steering (EPS), Steering Angle Sensor (SAS) calibration and EPS type recognition after replacement of the Column-Mounted, Motor Driven Power Steering (C-MDPS) assembly on 2016-2018MY Sorento (UMa) vehicles.
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.
TSBTRA047_R22018-03-13. Service bulletin. POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT. TSB - DRIVESHAFT SERVICEABILITY - This bulletin has been revised most recently to include additional information. This bulletin provides information regarding axle shaft serviceability for Kia vehicles equipped with a six-speed automatic transmission.
PS5432018-03-13. Service bulletin. FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING. PITSTOP - AEB VARIANT CODING - This Pitstop provides information regarding the correct ?Variant Coding? settings for the Autonomous Emergency Braking (AEB) on some 2017-2018MY Sorento (UMa) vehicles.
PS5422018-03-13. Service bulletin. FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING; LANE DEPARTURE: SENSING SYSTEM: CAMERA. PITSTOP - LDWS/MFC Variant Coding - This Pitstop provides information regarding the correct ?Variant Coding? settings for the Multi-Function Camera (MFC) on some 2017-2018MY Sorento (UMa) vehicles.
PS5412018-03-13. Service bulletin. ELECTRICAL SYSTEM:IGNITION. PITSTOP - INOPERATIVE SHIFT LOCK RELEASE AND/OR IGNITION IN ACCESSORY MODE - This pitstop provides the procedure to inspect the Key Interlock Switch contact on some 2016-2018MY Sorento (UMa) vehicles experience one of the following:1. An inoperative shift lock release; 2. No crank; 3. Inoperative key release (on key-start equipped vehicles); 4. Ignition stuck in accessory mode accompanied by a ?Shift to Park? message (on smart key equipped vehicles).
TSBENG177B_R12018-02-12. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION; POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION. TSB - SERVICE ACTION: 2.4L SHIFT QUALITY & WAKE-UP LOGIC IMPROVEMENT (SA316B) - This bulletin provides the procedure to improve the logic of the Electronic Control Unit (ECU) and Transmission Control Unit (TCU) on some 2018MY Optima (JFa) 2.4L, produced from April 18, 2017 through September 7, 2017, and some 2017MY Sorento (UMa) 2.4L vehicles, produced from March 31, 2017 through December 6, 2017, which may experience an extended crank and/or a shift quality concern, such as a hard downshift, upshift, and/or shift delay.
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.
PS5312018-01-16. Service bulletin. ELECTRICAL SYSTEM. PITSTOP - KEY FOB AND BATTERY VIN LABELS - To assist in improving product quality and warranty claims, key fobs/smart keys and the vehicle battery now have labels (A) containing the Vehicle Identification Number (VIN). These labels have been applied beginning with October 21, 2017 production for Optima (JFa) and Sorento (UMa) from the Kia Motors Manufacturing Georgia (KMMG) plant.
TSBTRA071AR12017-12-22. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN. TSB - SERVICE ACTION: 2.0t & 3.3l SHIFT QUALITY LOGIC IMPROVEMENT (SA315A) - This bulletin provides the procedure to improve the logic of the Transmission Control Unit (TCU) on some 2018MY Optima (JFa) 2.0T, produced from April 19, 2017 through July 10, 2017, and some 2018MY Sorento (UMa) 2.0T and 3.3L vehicles, produced from March 23, 2017 through September 18, 2017, which may experience a shift quality concern, such as a hard downshift, upshift, and/or shift delay.
TSBTRA071A2017-12-22. Service bulletin. POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). TSB - SERVICE ACTION: SHIFT QUALITY LOGIC IMPROVEMENT (SA315A) - This bulletin provides the procedure to improve the logic of the Transmission Control Unit (TCU) on some 2018MY Optima (JFa) 2.0T, produced from April 19, 2017 through July 10, 2017, and some 2018MY Sorento (UMa) 3.3L vehicles, produced from March 31, 2017 through July 25, 2017, which may experience a shift quality concern, such as a hard downshift, upshift, and/or shift delay.
TSBTRA0712017-12-22. Service bulletin. POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). TSB - SERVICE ACTION: 2.0T & 3.3L SHIFT QUALITY LOGIC IMPROVEMENT (SA315) - CLOSED - This bulletin provides the procedure to improve the logic of the Transmission Control Unit (TCU) on some 2018MY Optima (JFa) 2.0T, produced from April 19, 2017 through July 10, 2017, and some 2018MY Sorento (UMa) 2.0T and 3.3L vehicles, produced from March 31, 2017 through July 25, 2017, which may experience a shift quality concern, such as a hard downshift, upshift, and/or shift delay.
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.
TSBENG177B2017-12-22. Service bulletin. POWER TRAIN. TSB - SERVICE ACTION: 2.4L SHIFT QUALITY & WAKE-UP LOGIC IMPROVEMENT (SA316B) - This bulletin provides the procedure to improve the logic of the Electronic Control Unit (ECU) and Transmission Control Unit (TCU) on some 2018MY Optima (JFa) 2.4L, produced from April 18, 2017 through September 7, 2017, and some 2018MY Sorento (UMa) 2.4L vehicles, produced from March 31, 2017 through October 19, 2017, which may experience an extended crank and/or a shift quality concern, such as a hard downshift, upshift, and/or shift delay.
TSBENG1772017-12-22. Service bulletin. POWER TRAIN. TSB - SERVICE ACTION: 2.4L SHIFT QUALITY & WAKE-UP LOGIC IMPROVEMENT (SA316) - CLOSED - This bulletin provides the procedure to improve the logic of the Electronic Control Unit (ECU) and Transmission Control Unit (TCU) on some 2018MY Optima (JFa) 2.4L, produced from April 18, 2017 through September 7, 2017, and some 2018MY Sorento (UMa) 2.4L vehicles, produced from March 31, 2017 through October 19, 2017, which may experience an extended crank and/or a shift quality concern, such as a hard downshift, upshift, and/or shift delay.
TSBTRA0712017-11-14. Service bulletin. POWER TRAIN. TSB - SERVICE ACTION: 2.0T & 3.3L SHIFT QUALITY LOGIC IMPROVEMENT (SA315) - This bulletin provides the procedure to improve the logic of the Transmission Control Unit (TCU) on some 2018MY Optima (JFa) 2.0T, produced from April 19, 2017 through July 10, 2017, and some 2018MY Sorento (UMa) 2.0T and 3.3L vehicles, produced from March 31, 2017 through July 25, 2017, which may experience a shift quality concern, such as a hard downshift, upshift, and/or shift delay.
TSBENG1772017-11-14. Service bulletin. POWER TRAIN. TSB - SERVICE ACTION: 2.4L SHIFT QUALITY & WAKE-UP LOGIC IMPROVEMENT (SA316) - This bulletin provides the procedure to improve the logic of the Electronic Control Unit (ECU) and Transmission Control Unit (TCU) on some 2018MY Optima (JFa) 2.4L, produced from April 18, 2017 through September 7, 2017, and some 2018MY Sorento (UMa) 2.4L vehicles, produced from March 31, 2017 through October 19, 2017, which may experience an extended crank and/or a shift quality concern,
TSBBOD1762017-11-14. Service bulletin. EQUIPMENT:OTHER:LABELS. TSB - SERVICE ACTION: SORENTO (UMA) HEADREST HANG TAG REPLACEMENT (SA314) - This bulletin provides the procedure to replace the front headrest hang tag on some 2018MY Sorento (UMa) vehicles, produced from March 31, 2017 through September 22, 2017, which may have the incorrect hang tag displaying information regarding ?Dual Clutch Transmission? (DCT).

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