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Service bulletins for the 2018 Kia Cadenza

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.

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

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Bulletins, newest first
PS6752020-09-03. Service bulletin. EQUIPMENT; SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER. PITSTOP - BRAKE CALIPER LEAK INSPECTION - This PITSTOP provides information related to a brake caliper fluid/oil substance found on some Kia vehicles, due to possible excess assembly oil applied during assembly.
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_TRA046_R12020-05-05. Service bulletin. POWER TRAIN. TECHNICAL SERVICE BULLETIN: - TRANSMISSION FLUID APPLICATION GUIDE - This bulletin has been revised to include additional information. This bulletin provides information relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush is required ONLY when a transmission is replaced, refer to applicable vehicles on page 2. Refer to the shop manual on KGIS for the specific Kia model for the correct transmission fluid check/fill procedures.
TSB_BOD2042020-04-07. Service bulletin. STRUCTURE. TECHNICAL SERVICE BULLETIN: PANORAMIC SUNROOF SLOW TO CLOSE AND/OR ABNORMAL NOISE WHEN CLOSING - This bulletin provides the procedure to repair a panoramic sunroof that exhibits a slow to close condition and/or abnormal noise when closing, on some 2017-2019MY Cadenza (YG) vehicles.
TSB_ELE1482020-02-04. Service bulletin. EXTERIOR LIGHTING. TECHNICAL SERVICE BULLETIN: HALOGEN HEAD LAMP LOW BEAM BULB CONNECTOR REPLACEMENT - This bulletin provides information regarding the procedure to repair the bulb connector on some 2010MY~ vehicles listed on the table below, which may exhibit a bulb connector concern. To correct this concern, replace the connector with a new and improved part.
TSBCHA084_R42019-12-09. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING; STEERING. TECHNICAL SERVICE BULLETIN: PARTIAL REPAIR OF C-MDPS MOTOR, ECU AND/OR STEERING COLUMN HOUSING - This bulletin has been revised to include additional information.This bulletin provides information regarding the partial repair of the Motor Driven Power Steering (MDPS) Motor, Electronic Control Unit (ECU) or Steering Column Housing on some 2010MY~ Kia models listed on page 5 equipped with a Column Motor Driven Power Steering (C-MDPS) unit. Follow the MDPS Flowchart (page 2) along with the MDPS DTC Table (page 3) procedure outlined in this bulletin before replacing the C-MDPS Motor, ECU or Steering Column Housing.
TSBCHA084_R32019-11-07. Service bulletin. STEERING. TECHNICAL SERVICE BULLETIN TSB084_R3: PARTIAL REPAIR OF C-MDPS MOTOR, ECU AND/OR STEERING COLUMN HOUSING - This bulletin has been revised to include additional information.This bulletin provides information regarding the partial repair of the Motor Driven Power Steering (MDPS) Motor, Electronic Control Unit (ECU) or Steering Column Housing on some 2010MY~ Kia models listed on page 5 equipped with a Column Motor Driven Power Steering (C-MDPS) unit.
SC169_TSB_R12019-11-07. Service bulletin. ENGINE AND ENGINE COOLING. VOLUNTARY EMISSIONS SERVICE CAMPAIGN (SC169_Rev1): ENGINE OIL FILLER CAP INSPECTION AND/OR REPLACEMENT - This bulletin has been revised to include additional information.This bulletin provides the procedure to inspect and, if necessary, replace the oil filler cap on some vehicle models listed below. The engine oil filler cap may contain a misprint of SAE Engine Oil Viscosity Number. Follow the procedure outlined in this bulletin to replace the oil filler cap.
SC169_TSB2019-11-07. Service bulletin. ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: ENGINE OIL FILLER CAP INSPECTION AND/OR REPLACEMENT (SC169) - This bulletin provides the procedure to inspect and, if necessary, replace the oil filler cap on some vehicle models listed below. The engine oil filler cap may contain a misprint of SAE Engine Oil Viscosity Number. Follow the procedure outlined in this bulletin to replace the oil filler cap.
SC169_QA2019-11-07. Service bulletin. ENGINE AND ENGINE COOLING. VOLUNTARY EMISSIONS SERVICE CAMPAIGN (SC169): QUESTIONS AND ANSWERS - This document contains questions and answers regarding the Voluntary Emissions Service Campaign on the Engine Oil Filler Cap inspection, and if necessary, replacement.
SC169_OWNR_YG2019-11-07. Service bulletin. ENGINE AND ENGINE COOLING. VOLUNTARY EMISSIONS SERVICE CAMPAIGN (SC169): OWNER NOTIFICATION LETTER - CADENZA - This document is the owner notification letter to 2018 MY Kia Cadenza vehicle owners advising them of the Voluntary Emissions Service Campaign to inspect, and if necessary, replace the engine oil filler cap in their vehicles.
SC169_DSM2019-11-07. Service bulletin. ENGINE AND ENGINE COOLING. VOLUNTARY EMISSIONS SERVICE CAMPAIGN (SC169): DEALER SERVICE MANAGER NOTICE - Kia Motors America, Inc. will be conducting a Voluntary Emissions Service Campaign to inspect and, if necessary, replace the engine oil filler cap on certain 2018 MY Stinger, 2018 MY Cadenza, 2019 MY Sedona, 2019 MY Sorento, and 2019 MY Optima vehicles. The engine oil filler cap may contain a misprint of the SAE Engine Oil Viscosity Number.
SC169_DP2019-11-07. Service bulletin. ENGINE AND ENGINE COOLING. VOLUNTARY EMISSIONS SERVICE CAMPAIGN (SC169) DEALER PRINCIPAL NOTICE - This document notifies the Kia dealer principals that that Kia Motors America, Inc. will be conducting a Voluntary Emissions Service Campaign to inspect and, if necessary, replace the engine oil filler cap on certain 2018 MY Stinger, 2018 MY Cadenza, 2019 MY Sedona, 2019 MY Sorento, and 2019 MY Optima vehicles. The engine oil filler cap may contain a misprint of the SAE Engine Oil Viscosity Number.
TSBENG178_R32019-08-07. Service bulletin. ENGINE AND ENGINE COOLING. 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.
PS6132019-07-11. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. PITSTOP: INSTRUMENT CLUSTER REPLACEMENT, MILEAGE SETTING WITH KDS - This publication provides the KDS service procedure for mileage setting on the listed vehicles with newly replaced instrument clusters.
TSBENG178_R22019-05-08. Service bulletin. ENGINE AND ENGINE COOLING. 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. The California Air Resources Board (CARB) requires the emissions data from vehicles with a minimum of 3,000 accumulated miles without reprogramming or resetting.
TSBENG083_R12019-02-19. Service bulletin. FUEL SYSTEM, GASOLINE. TSB: SPECIAL SERVICE INFORMATION & SPECIFICATIONS FOR GDI HIGH PRESSURE FUEL SYSTEM - This bulletin has been revised to include additional information. This bulletin provides information relating to all Kia vehicles equipped with Gasoline Direct Injection (GDI) engines. In these engines highly pressurized gasoline is injected via a common fuel rail and injectors that deliver fuel directly into the combustion chamber of each cylinder. In comparison, in a conventional Multi-Point Fuel Injection (MPI) engine, the gasoline is injected into the intake port of each cylinder at a relatively low pressure. Due to high fuel pressure in a GDI system, servicing the GDI system requires special attention and handling procedures. This bulletin provides special service information and specifications for the GDI fuel system components.
PS299_R32018-10-09. Service bulletin. VISIBILITY:WINDSHIELD; VISIBILITY:WINDSHIELD WIPER/WASHER. PITSTOP - CORRECT PROCEDURE FOR RAISING WINDSHIELD WIPERS - When servicing the windshield wipers on the listed vehicles below during PDI, make sure to use the procedure outlined below to raise the wiper arms to the fully vertical position in order to avoid damaging the paint on the rear edge of the hood. It is important to note that the wipers on these vehicles are recessed under the hood to provide better appearance and reduced wind noise characteristics. This procedure applies to both key start and SMK type ignition systems.
PS464_R22018-08-06. Service bulletin. VISIBILITY; LANE DEPARTURE: BLIND SPOT DETECTION. PITSTOP - NO COMMUNICATION WITH BLIND SPOT DETECTION AFTER COLLISION REPAIRS - This Pitstop provides information relating to the vehicles listed below with Blind Spot Detection (BSD), which may exhibit a ?Check BSD System? message and no communication with the BSD system after collision repairs.
TSBENG1882018-06-25. Service bulletin. ELECTRICAL SYSTEM. TSB - SERVICE ACTION: ELECTRIC THERMOSTAT ASSEMBLY REPLACEMENT (SA346) - This bulletin provides the procedure to replace the electric thermostat (ECT) assembly on some 2017-2018MY Cadenza (YG) vehicles, produced from January 6, 2016 through August 10, 2017, which may exhibit a Malfunction Indicator Light (MIL) illuminated with one or more DTCs.
PS5642018-06-18. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. PITSTOP - CLOCK CONCERNS ON UVO eSERVICES (UVO 3.0) - This Pitstop contains information regarding possible concerns with the clock on UVO eServices (UVO 3.0) head units installed on 2017-2018MY vehicles.
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.
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.
TSBTRA0752018-03-13. Service bulletin. POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:FLOOR SHIFT. TSB - SERVICE ACTION: TRANSMISSION GEAR SHIFT LOGIC IMPROVEMENT (SA337) - This bulletin provides the procedure to improve the logic of the Transmission Control Unit (TCU) on some 2017-2018MY Cadenza (YG) vehicles, produced from June 2, 2016 through August 18, 2017, which may experience unusual 5th gear engagement instead of 1st gear after starting the engine and shifting from Park (P) to Drive (D).
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.

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