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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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Only bulletins with component: Equipment and accessories are shown. Show all

Bulletins, newest first
TSB_ELE3202024-01-06. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: AVN 5.0 WIDE SCREEN FREEZING OR MAP DELAY WITH WIRED APPLE CARPLAY - This bulletin provides information to update the software on 5th Generation AVN wide on certain 2020-2023MY Kia vehicles to remedy an inaccurate map location, freezing AVN screen, or experiencing a delay when using Google Maps or Waze through wired Apple CarPlay.
CS2304_TSB_R62023-11-03. Service bulletin. EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: ANTI-THEFT S/W LOGIC UPGRADE & DECAL INSTALLATION (CS2304) - 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 upgrade the software logic of the Integrated Body Control Unit (IBU) or Body Control Module (BCM), or Intelligent Integrated Platform Module (IPM) system on certain 2011-2015MY Sorento (XMa), 2016-2020MY Sorento (UMa), and 2021-2022MY Sorento (MQ4a) vehicles produced within the dates outlined on page 10, which may not be equipped with an immobilizer. This logic upgrade will add anti-theft ignition start logic to the vehicle's system operation which activates when the vehicle is locked.
TSB_ELE303_R12023-10-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This bulletin provides information to update the software on 5th Generation AVN wide on certain 2020-2024MY Kia vehicles (refer to model list on page 3) to remedy a 'non-responsive' or 'inoperative' radio (FM, AM, SXM, etc. ) concern. The affected AVN unit on the vehicles may not respond when pressing the 'RADIO' hard key/button on the AVN unit or when selecting the 'RADIO' icon on the AVN menu screen.
TSB_ELE229_R42023-08-02. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. 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.
TSB_ELE2822023-04-22. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: MQ4 HEV LEAFLET AND RESERVOIR CAP LABEL REPLACEMENT(SA524) - This bulletin provides information to replace the hybrid motor coolant reservoir cap label and provide a leaflet on some 2021-2022MY Sorento HEV (MQ4 HEV) vehicles produced from September 17, 2021 through January 10, 2022. Follow the procedure outlined in this publication to provide a leaflet in the glovebox and replace the hybrid motor coolant reservoir cap label.
TSB_ELE2812023-04-22. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: MQ4 HEV RESERVOIR CAP LABEL REPLACEMENT (SA523) - This bulletin provides information to replace the hybrid motor coolant reservoir cap label on some 2021MY - 2022MY Sorento (MQ4 HEV) vehicles produced from January 11, 2022 through May 19, 2022.
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.
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_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_ENG2252021-02-02. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: CENTER AND REAR MUFFLER INSPECTION AND REPAIR (SA461) - This bulletin provides the procedure to inspect the center muffler on some 2021MY Sorento (MQ4a HEV) vehicles equipped with 1.6L T-GDI engine, produced from September 02, 2020 through December 30, 2020, which may exhibit a poor engine start up due to freezing of condensation in the muffler(s) after parking the vehicle for an extended period of time in cold/freezing temperature. The issue does not affect drivability once the vehicle is started.
PS6812020-12-02. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; WHEELS. PITSTOP: SORENTO (MQ4A) ALIGNMENT SPECIFICATIONS - This Pitstop provides information regarding alignment specifications for 2021MY Sorento (MQ4a) and Sorento Hybrid (MQ4 KH) vehicles.
PS654_R12020-11-03. Service bulletin. STRUCTURE:BODY:DOOR; EQUIPMENT:APPLIANCE:TV/RADIO/SPEAKERS; ELECTRICAL SYSTEM. PITSTOP: DOOR SPEAKER DIAGNOSTIC GUIDE - 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 diagnostic information to guide in diagnosis of suspected defective door speakers on some Kia vehicles.

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