Certain 2022-2023 Tucson Hybrid (NX4 P/HEV) and 2022-2023 Santa Fe Hybrid (TM P/HEV vehicles may experience a malfunction indicator light (MIL) illumination accompanied by DTC P2601 – Coolant Pump Control Circuit Range/Performance, due to a malfunction of the Auxiliary Electronic Water Pump (AEWP). Vehicles with malfunctioning AEWP will operate in EV mode and continuously consume energy of the high voltage battery due to engine starting failure. This bulletin provides instructions to inspect the AEWP and engine control wiring harness and replace if necessary.

Certain 2020-2025MY Palisade (LX2) vehicles may experience oil leak from the mating surface between the engine block and the oil filter housing. The warranty period for the engine oil filter housing has been extended to 15 years or 240,000 km, whichever occurs first, from the date of original delivery. This bulletin provides the procedure to inspect the engine oil filter housing for indications of oil leakage and replace the oil seal if necessary.

Certain 2026MY Sonata (DN8) and Sonata Hybrid (DN8 HEV) vehicles may exhibit a condition where the fuel filler door requires excessive force to open. This bulletin provides procedures to inspect the fuel filler door push opener for proper operation and, if necessary, replace the push opener to correct this condition.

In certain 2024-2026MY Sonata (DN8) and 2026MY Sonata Hybrid (DN8 HEV) vehicles the Auto Temperature Control Unit (ATCU) may fail to enter sleep mode when the vehicle is locked and may result in 12V battery drain. Additionally, the HVAC controller may remain blank when Bluelink remote engine start function is used. This bulletin provides instructions to update the ATCU to prevent these conditions. This update has also been released as an Over-The-Air (OTA) update.

In certain 2024-2026MY Sonata (DN8) and 2026MY Sonata Hybrid (DN8 HEV) vehicles the Auto Temperature Control Unit (ATCU) may fail to enter sleep mode when the vehicle is locked and may result in 12V battery drain. Additionally, the HVAC controller may remain blank when Bluelink remote engine start function is used. This bulletin provides instructions to update the ATCU to prevent these conditions. This update has also been released as an Over-The-Air (OTA) update.

On certain 2024-2025MY Hyundai vehicles equipped with ccNC, an error may occur while on the Driver Profile selection screen, preventing access to the infotainment system features. This bulletin provides instructions for updating the ccNC system to correct this condition.

Certain 2025-2026MY Tucson Hybrid (NX4 HEV) and Plug-in Hybrid (NX4 PHEV) vehicles may experience intermittent rebooting of the instrument cluster due to a communication error with the Heads-Up Display (HUD), resulting in a temporary black screen. This bulletin outlines the procedure to update the cluster module (CLU) to correct this condition. This update has also been released as an Over-The-Air (OTA) update.

Certain 2026MY Palisade Hybrid (LX3 HEV) vehicles may experience false diagnostic trouble codes after Bluelink Remote Start due to Vehicle Platform Controller (VPC) logic error. This bulletin provides instructions to update the VPC to correct this condition. This improvement will also be released as an Over-The-Air (OTA) update.