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Service bulletins for the 2021 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.

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

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Bulletins, newest first
TSB_ELE209_R32022-08-18. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: SERVICE REMINDER SETTING RESET PROCEDURE - This bulletin provides the procedure to turn OFF the service reminder lamp, at the first service interval reminder alert that will display on the instrument cluster. The KDS is required to change the setting from "Workshop" to "Customer Mode."
PS672_R12022-08-18. Service bulletin. ELECTRICAL SYSTEM; SEATS. PITSTOP: REAR OCCUPANT ALERT (ROA) W/REAR DOOR LOGIC - 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 Pitstop provides information regarding the Rear Occupant Alert (ROA) with Rear Door Logic system on all 21MY~ models equipped with this feature. This system is designed to help prevent a rear passenger from being left inside the vehicle when exiting. The "Check Rear Seats" message will display on the cluster when driver opens the front door, if during vehicle operation the rear doors (one or both) were opened and closed.
TSB_BOD3082022-08-03. Service bulletin. STRUCTURE; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: REAR CORNER RADAR UNIT BODY SEALER INSPECTION & REPAIR (SA503) - This bulletin provides information to inspect both rear (LH & RH) corner radar unit mounting body sealer surface on some 2021-2022MY Sorento (MQ4a) vehicles equipped with rear Blind Spot Detection (BSD) System, produced from November 30, 2021 through June 30, 2022, which may have excess body sealer applied during assembly causing improper mounting angle of the rear corner radar unit. An improperly mounted rear radar unit may cause the vehicle to exhibit a MIL 'ON' with DTC C270954. Follow the procedure outlined in this publication to inspect and, if necessary, file down the seam sealer behind the bracket.
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).
PS613_R12022-04-01. Service bulletin. ELECTRICAL SYSTEM. PITSTOP: INSTRUMENT CLUSTER REPLACEMENT AND MILEAGE SETTING WITH KDS - 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 pitstop provides the KDS service procedure for mileage setting on the models listed below with newly replaced instrument clusters. Certain models allow for mileage setting with the KDS, which prevents the need to send out the instrument cluster to a 3rd party for mileage adjustment (refer to PS264). After a new cluster is installed, cluster (variant) coding may also need to be conducted using the KDS. Make sure the KDS software is also updated to the latest version. Mileage setting should be performed by using the KDS only, as described in this bulletin.
TSB_ENG222_R62022-03-31. Service bulletin. 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_TRA1002022-02-04. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; POWER TRAIN:CLUTCH ASSEMBLY; POWER TRAIN. TECHNICAL SERVICE BULLETIN: 8 SPEED WET DUAL CLUTCH TRANSMISSION (WDCT) JUDDER EVALUATION - This bulletin provides information to inspect for judder in the 8-speed Wet Dual Clutch Transmission (WDCT) and possibly replace the Dual Clutch Assembly on some 2021MY~ K5 GT (DL3a) vehicles produced from November 16, 2020 and later and Sorento EX trim and above (MQ4a) non-hybrid vehicles, produced from October 26, 2020 and later, which may exhibit clutch judder. If the vehicle body vibrates without the steering wheel shuddering when performing the creep driving test (driving the vehicle up to 3mph), the vehicle is exhibiting clutch judder. The creep test can be conducted by driving at a speed slower than 5 mph after releasing the brake.
TSB_ENG2352022-02-04. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV). TECHNICAL SERVICE BULLETIN: AIR INTAKE SYSTEM CLEANING, PCV VALVE & AIR FILTER REPLACEMENT DUE TO OIL CONTAMINATION - This bulletin provides information regarding the air intake system which may become contaminated with oil due to a faulty Positive Crankcase Ventilation (PCV) check valve on some 2021-2022MY Sorento (MQ4a) vehicles equipped with Theta III 2.5L T-GDI engine, produced from September 10, 2020 through October 2, 2021, which may allow engine oil to enter the air intake system and contaminate the engine air filter with oil.
PS576_R22022-02-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. PITSTOP: BATTERY DEALER (SHIPPING)/CUSTOMER MODE SWITCH - 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 Pitstop provides information regarding a new interface related to the electronic Dealer (Shipping) / Customer Mode Switch setting on all applicable models.
TSB_ENG222_R52022-01-20. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. 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.
PS7192022-01-04. Service bulletin. ENGINE AND ENGINE COOLING. PITSTOP: POTENTIAL LOW OIL PRESSURE DUE TO FILTER DRAIN PLUG THAT WAS LEFT IN FILTER - Attention Dealership Service Managers, Service and Lube Techs, pay particular attention to this information. This Pitstop provides information regarding potential engine damage if the proper procedures are not followed during an oil change on some 2021 and later K5 (DL3a) and Sorento (MQ4a) vehicles equipped with 2.5L/2.5L-T GDI Theta III engines.
TSB_FUE054_CLSD2021-12-23. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TSB_FUE054_CLOSED: TECHNICAL SERVICE BULLETIN CLOSED
TSB_FUE0542021-12-23. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: 2.5L GDI WITH MIL ON DTC P2074XX ECM LOGIC IMPROVEMENT (SA489) - This bulletin provides the procedure to update the software logic of the Engine Control Module (ECM) system on some 2021-2022MY Sorento (MQ4a) vehicles with Theta 2.5L GDI engines, produced from September 30, 2020 through October 25, 2021, which may exhibit an MIL ON with DTC P2074XX due to throttle position to Mass Air Flow Sensor (MAF) correlation value reading error under high load.
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_FUE0552021-12-23. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: 2.5L GDI WITH MIL ON DTC P2074XX ECM LOGIC IMPROVEMENT (SA489A) - This bulletin provides the procedure to update the software logic of the Engine Control Module (ECM) system on some 2021-2022MY Sorento (MQ4a) vehicles with Theta 2.5L GDI engines, produced from September 30, 2020 through October 25, 2021, which may exhibit an MIL 'ON' with DTC P2074XX due to throttle position to Mass Air Flow Sensor (MAF) correlation value reading error under high load.
TSB_CHA084_R82021-10-22. Service bulletin. STEERING. 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), Steering Column Housing, or Worm Gear Assembly. When the steering wheel is rotated a scraping noise can be heard originating from the lower bearing on the Worm Gear Assembly on some 2010MY~ Kia models listed on page 8, equipped with a Column Motor Driven Power Steering (C-MDPS) unit. On some vehicles when the steering wheel is rotated a scraping noise can be heard originating from the lower bearing on the Worm Gear Assembly and does not affect the steering effort.
TSB_BOD055_R12021-10-02. Service bulletin. STRUCTURE; EXTERIOR LIGHTING. TECHNICAL SERVICE BULLETIN: INFORMATION FOR HEADLAMP CONDENSATION AND MOISTURE - 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 relating to some Kia models that may exhibit fogging, condensation, and/or moisture inside a headlamp assembly. Generally, a fogging condition is considered normal and can be eliminated by turning on the headlamps with the engine running for up to 30 minutes or during normal driving conditions. Headlamp assembly replacement WILL NOT be necessary in most cases.
TSB_ENG222_R32021-09-10. Service bulletin. 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 2011-2019MY vehicles (refer to table below for applicable model and engine), which may exhibit a symptom of excessive oil consumption.
PS656_R22021-09-03. Service bulletin. ELECTRICAL SYSTEM. PITSTOP: REAR OCCUPANT ALERT (ROA) WITH ULTRASONIC OPERATION - 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 Pitstop provides information regarding the Rear Occupant Alert (ROA) with ultrasonic sensor feature designed to alert the driver, in the event that a rear passenger is remaining inside the vehicle.
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).
PS7042021-08-25. Service bulletin. FORWARD COLLISION AVOIDANCE; ELECTRICAL SYSTEM. PITSTOP: FRONT RADAR SENSOR MOUNTING INSPECTION (PS704) - This pitstop provides information regarding front radar sensor alignment on 2014MY and later vehicles that may exhibit a warning light ON related to radar sensor alignment errors in the Forward Collision-Avoidance Assist (FCA)/Smart Cruise Control (SCC) system.
PS677_R12021-06-15. Service bulletin. ELECTRICAL SYSTEM. PIT STOP: LOG FILE COLLECTION FOR AVN 5.0/W AND DISPLAY AUDIO 2.0 - 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 Pitstop contains information regarding the log file collection procedure for 2020MY~ models equipped with AVN 5.0/W or Display Audio 2.0 head units.
PS7022021-06-15. Service bulletin. VISIBILITY. PIT STOP: A/C DYE FOR E-COMPRESSOR EQUIPPED VEHICLES - This bulletin provides information on the proper non-conductive A/C system leak detection dye to be used in all EV, HEV, and PHEV models equipped with an electric A/C compressor.
PS6872021-05-19. Service bulletin. ELECTRICAL SYSTEM; STEERING. PIT STOP: DIAGNOSING HAPTIC MOTOR CONCERNS - This Pitstop provides information regarding a "Check Haptic Steering Wheel System" message displayed on the cluster on some 2021MY Sorento (MQ4a) vehicles, with DTC B247300 which may be related to a poor connection in the haptic motor circuit.
TSB_ELE229_R32021-04-15. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: DISPLAY AUDIO 2.0 VALUE SOFTWARE UPDATE FOR WIRELESS CARPLAY 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 the procedure to update the head unit software on some 2021MY K5 (DL3a), Sorento (MQ4a), and Sorento Hybrid (MQ4 HEV) vehicles equipped with a Display Audio 2.0 Value head unit, which may exhibit a wireless CarPlay connectivity issue with Apple phones running iOS14 software version.

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