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Service bulletins for the 2021 Kia Seltos

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.

134 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
SST082_R12025-09-05. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This bulletin provides instructions to perform an engine vibration inspection using the Kia Diagnostic System (KDS) tablet on certain Kia engine/model vehicles. The piston oil ring(s) in certain Kia engines may, over time, damage the surface of the engine cylinder wall. This may lead to increased oil consumption which will eventually result in abnormal noise from the engine and/or illumination of the oil pressure warning light. The applicable vehicle may or may not have the Piston Noise Sensing System (PNSS) software installed at the time of an engine vibration inspection. The PNSS software may detect engine noise triggering a DTC P132700.
SC336YZ_TSB2025-09-05. Service bulletin. ENGINE. This bulletin provides information related to the Technical Service Bulletin previously published under SC336 titled “Engine Inspection/Replacement and ECM Logic Improvement”.
TSB_SST0822025-04-23. Service bulletin. ELECTRICAL SYSTEM; ENGINE. TECHNICAL SERVICE BULLETIN: PISTON NOISE SENSING SYSTEM (PNSS) INSPECTION - This bulletin provides instructions to perform an engine vibration inspection using the Kia Diagnostic System (KDS) tablet on certain 2020 - 2023 MY Kia Soul (SK3) 2021 - 2023 MY Seltos (SP2) Kia vehicles equipped with 2.0L Nu MPI Engines. The piston oil ring(s) in certain Kia engines may, over time, damage the surface of the engine cylinder wall. This may lead to increased oil consumption which will eventually result in abnormal noise from the engine and/or illumination of the oil pressure warning light. The applicable vehicle may or may not have the Piston Noise Sensing System (PNSS) software installed at the time of an engine vibration inspection. The PNSS software may detect engine noise triggering a DTC P132700.
TSB_ENG222_R82025-04-18. Service bulletin. ENGINE. 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 2011-2024MY vehicles (refer to the table on pages 9 and 10 for applicable models and engine), which may exhibit a symptom of excessive oil consumption.
TSB_ENG222_R72025-03-04. Service bulletin. ENGINE. 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 2011-2024MY vehicles (refer to the tables on pages 8-9 for applicable models and engine), which may exhibit a symptom of excessive oil consumption.
SC209Y_TSB_R22024-06-18. Service bulletin. ENGINE. TECHNICAL SERVICE BULLETIN: SUBSEQUENT REPAIR ACTION: ENGINE REPLACEMENT INSTRUCTIONS FOR PISTON RING NOISE DTC 1327 (SC209Y) - 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 in (SC209A) titled “ECM Logic Improvement for Piston Ring Noise Sensing System”. If DTC P1327 is present after the ECM Logic Improvement is performed per SC209A, follow the instructions in this bulletin to replace the engine long block.
TSB_ENG219_R12022-09-30. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: MAINTENANCE REMINDER FEATURE - 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 setting the "Service Interval Reminder" feature available on most 2014-2023MY Kia vehicles (refer to model list on page 2). If the service interval reminder is set, the customer will be informed to have the next maintenance service performed, which can positively affect vehicle longevity and performance. Refer to TSB ENG241 for 2023MY~ vehicles equipped with the Oil Life Management System (OLMS) feature not included in table on page 2.
TSB_ENG227_R22022-08-03. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: MIL ON DTC P0605 AND/OR P2181 ECM LOGIC IMPROVEMENT (SA463) - 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 improve the logic of the Engine Control Module (ECM) on some 2020-2021MY Soul (SK3) vehicles and 2021MY Seltos (SP2) vehicles produced in the date ranges shown below, equipped with NU 2.0L ATK engines, which may exhibit engine starting related DTC P0605 and/or thermostat related DTC P2181.
SC209Y_TSB_R12022-05-04. Service bulletin. ENGINE AND ENGINE COOLING. SUBSEQUENT REPAIR ACTION: ENGINE REPLACEMENT INSTRUCTIONS FOR PISTON RING NOISE DTC P1327 (SC209Y) - 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 in (SC209A) titled "ECM Logic Improvement for Piston Ring Noise Sensing System". If DTC P1327 is present after the ECM Logic Improvement is performed per SC209A, follow the instructions in this bulletin to replace the engine long block.
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.
SC209Y_TSB2022-03-31. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. SUBSEQUENT REPAIR ACTION: ENGINE REPLACEMENT INSTRUCTIONS FOR PISTON RING NOISE DTC P1327(SC209Y) - This bulletin provides information related to the Technical Service Bulletin previously published in (SC209A) titled "ECM Logic Improvement for Piston Ring Noise Sensing System". If DTC P1327 is present after the ECM Logic Improvement is performed per SC209A, follow the instructions in this bulletin to replace the engine long block.
TSB_ENG227_R12022-01-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:THERMAL MANAGEMENT:FLUID/COOLANT. TECHNICAL SERVICE BULLETIN - SERVICE ACTION: MIL ON DTC P0605 AND/OR P2181 ECM LOGIC IMPROVEMENT (SA463) - 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 improve the logic of the Engine Control Module (ECM) on some 2020-2021MY Soul (SK3) vehicles produced from November 24, 2018 through January 4, 2021 and 2021MY Seltos (SP2) vehicles produced from November 20, 2019 through January 12, 2021, equipped with NU 2.0L ATK engines, which may exhibit engine poor starting related DTC P0605 and/or thermostat related DTC P2181.
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.
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_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.
TSB_ENG2272021-03-04. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN - SERVICE ACTION: MIL ON DTC P0605 AND/OR P2181 ECM LOGIC IMPROVEMENT (SA463) - This bulletin provides the procedure to improve the logic of the Engine Control Module (ECM) on some 2020-2021MY Soul (SK3) vehicles produced from November 24, 2018 through January 4, 2021 and 2021MY Seltos (SP2) vehicles produced from November 20, 2019 through January 12, 2021, equipped with NU 2.0L ATK engines, which may exhibit engine poor starting related DTC P0605 and/or thermostat related DTC P2181.
TSB_ENG216_R22021-03-04. Service bulletin. ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC21) - 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 extracting “in use performance tracking” emissions data from the Engine Control Unit (ECU) of certain vehicles sold in California. The California Air Resources Board (CARB) requires the emissions data from vehicles with a minimum of 3,000 accumulated miles without reprogramming or resetting.
TSB_ENG216_R12021-02-04. Service bulletin. ENGINE AND ENGINE COOLING. TSB - DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC21) - 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 extracting “in use performance tracking” emissions data from the Engine Control Unit (ECU) of certain vehicles sold in California. The California Air Resources Board (CARB) requires the emissions data from vehicles with a minimum of 3,000 accumulated miles without reprogramming or resetting.
SC199_POC2021-01-06. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; POWER TRAIN. SC199_POC - Proof of Completion Card
SC199_DPSM2021-01-06. Service bulletin. EQUIPMENT; ENGINE; POWER TRAIN. SC199 - Dealer Parts and Service Manager Notice: Notification to Dealer Parts and Service Managers advising them of a Voluntary Emissions Service Campaign to improve the Transmission Control Module (TCM) logic and, if necessary, replace the Intelligent Variable Transmission (IVT) on some 2019-2020 Forte; 2020-2021 Soul, and 2021 Seltos vehicles.
TSB_ELE200_CLSD2021-01-06. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). TSB_ELE200_CLOSED: Technical Service Bulletin superseded by SC199_TSB
PS653_R22020-12-01. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:SOFTWARE. PITSTOP: VEHICLE AUTO-SHUT OFF SYSTEM - 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. Some 2021MY Seltos (SP2), K5 (DL3A) and Sorento (MQ4a, MQ4 KH) models are equipped with a new Auto-Shut Off feature, which automatically shuts off the engine after a set time period. This feature will help reduce fuel consumption and prevent carbon monoxide (CO) poisoning.
TSB_ENG2192020-08-04. Service bulletin. ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: MAINTENANCE REMINDER FEATURE - This bulletin provides information on setting the "Service Interval Reminder" feature available on most Kia vehicles. If the service interval reminder is set, the customer will be informed to have the next maintenance service performed, which can positively affect vehicle longevity and performance.
TSB_ENG2172020-08-04. Service bulletin. ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: MAINTENANCE REMINDER FEATURE
TSB_ENG2162020-06-03. Service bulletin. ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC21) - 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.

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