WenmarOpen by Wenmar Pro

Service bulletins for the 2018 Hyundai Ioniq

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.

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

By type

By component

By trouble code

By topic

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
DCS T3R2019-03-18. Service bulletin. ELECTRICAL SYSTEM. Hyundai Motor America is conducting Service Campaign T3R to update the D-Audio lite head unit software on certain 2018 Model Year Tucson and 2018-19 Ioniq Plug-In Hybrid vehicles. Service Campaign T3R provides a service procedure to update the D-Audio lite software for home screen remaining blank.
5NP-M7Z5K-022019-02-19. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information on how to return a Hyundai HEV/PHEV/EV/Fuel Cell Lithium Battery for proper disposal and safe environmental recycling using Hyundai?s authorized vendor Kinsbursky Brothers Inc. (KBI).
5NP-B6S5Q-012019-02-19. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides the procedures for calibrating Ioniq Hybrid sensors using GDS whenever the components listed below are replaced or the DTC listed are stored.
5NP-W9W4Y-122018-12-17. Service bulletin. LATCHES/LOCKS/LINKAGES; ELECTRICAL SYSTEM. Some Ioniq EV (AE EV) and Ioniq Plug-in Hybrid (AE PHEV) vehicles may experience a charging connector lock/unlock actuator malfunction, which may cause: The charging connector to not remain locked when the charger is inserted into the charging port. And/or the charging connector to be unable removed from the vehicle charging port. This bulletin provides part replacement instruction and information on the availability of the inlet locking actuator as a separate part. If the vehicle exhibits one of the condition described above, it is recommended to replace the inlet locking actuator only, not the entire quick charge inlet cable wiring assembly.
5NP-T2P5P-102018-10-15. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Hyundai Motor America is conducting a Service Campaign to update the BMS software on certain 2017-18 Model Year Ioniq Hybrid vehicles. Service Campaign T3D provides a procedure to update the BMS ECU software.
5NP-X2L9K-102018-10-15. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:SOFTWARE. This bulletin provides information related to a BMS (Battery Management System) ECU software update to revise the 12V LiOn battery system management and diagnostics.
5NP-T5B2D-022018-02-12. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM. This bulletin describes the procedure to determine if the vehicle?s head unit needs to be replaced as a result of the system frequently losing a Bluetooth connection with Apple iPhone devices.
5NP-E2C3Q-092017-09-14. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This bulletin provides information on how to return a Hyundai HEV/PHEV/EV/Fuel Cell Lithium Battery for proper disposal and safe environmental recycling using Hyundai?s authorized vendor Kinsbursky Brothers Inc. (KBI).

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