# Service bulletin 5NP\-Q5X4W\-01

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.

- Type: Service bulletin
- NHTSA id: 10152866
- Published by NHTSA: 2019\-02\-19
- Manufacturer's number: 5NP\-Q5X4W\-01
- Manufacturer's date: 2018\-12\-20
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Hyundai Motor America is conducting a Service Campaign to update the ECM software on certain Dealer Stock 2019 Model Year Ioniq Hybrid and Plug\-In vehicles. Service Campaign T3P provides a procedure to update the ECM software.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10152866-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10152866-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Vehicles listed

- 2019 HYUNDAI IONIQ HYBRID
- 2019 HYUNDAI IONIQ PLUG\-IN HYBRID

## Recalls for the same vehicles and component

- [21V944000](/recalls/nhtsa/21V944000.md), 2021-12-07: ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:MODULE:ONBOARD \(OBCM\); ELECTRICAL SYSTEM:SOFTWARE

## Other bulletins for the same vehicles and component

- [26\-01\-065H TSB](/bulletins/11036311.md), 2026-08-21, Service campaign: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. Certain Kona Electric \(OS EV\) and Ioniq Electric \(AE EV\) vehicles are eligible for a Battery Management System \(BMS\) software update. This update to the BMS software improves the system’s diagnostic capability. Follow this bulletin to complete the BMS software update.
- [25\-01\-024H\-1 TSB](/bulletins/11018575.md), 2025-05-27, Service campaign: ELECTRICAL SYSTEM. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s communication network. Follow the procedure in this TSB to reestablish the connection via the AVN pinhole reset method.
- [25\-01\-024H EM](/bulletins/11017111.md), 2025-04-18, Service campaign: ELECTRICAL SYSTEM. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon's communication network. If you are experiencing issues with remote commands, or other Bluelink services, please see the instructions below to reestablish the connection via the AVN pinhole reset method.
- [25\-01\-024H TSB](/bulletins/11015936.md), 2025-03-25, Service campaign: ELECTRICAL SYSTEM. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s communication network. Follow the procedure in this TSB to reestablish the connection via the AVN pinhole reset method.
- [23\-01\-072H](/bulletins/10243318.md), 2023-10-02, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. This bulletin provides the procedure to update the Hybrid Control Unit \(HCU\) / Low DC/DC Converter \(LDC\) software logic to eliminate internal P\-DTCs \(that are not viewable\) in certain 2019\-2021MY IONIQ Hybrid \(AE HEV\) and 2021MY IONIQ Plug\-in Hybrid \(AE PHEV\) vehicles.
- [23\-BE\-007H](/bulletins/10240087.md), 2023-08-02, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; ELECTRICAL SYSTEM. This Service Information bulletin provides information on how to update the Apple Carplay software from Hyundai’s Navigation Updates page. The current version of Google Maps has 10 times the data transmission compared to the previous version. As a countermeasure, an update with a frame skip logic has been added to resolve the data congestion with Google Maps.
- [22\-HC\-001H](/bulletins/10213725.md), 2022-06-10, Service bulletin: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. If you are servicing an applicable model with Hybrid Drive Motor \(Traction Motor\) improper operation or any DTC listed in the related shop manual, Motor Control System, refer to the shop manual for diagnosis. If the diagnosis indicates a faulty hybrid drive motor, refer to the Service Procedure and replace the hybrid drive motor.
- [21\-01\-013H](/bulletins/10190035.md), 2021-04-07, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT. This bulletin describes the procedure to install a protection cover over the In\-Cable Control Box \(ICCB\) to protect against drops, bumps, or shock.
- [21\-EE\-001H](/bulletins/10190031.md), 2021-04-07, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. This Service Information bulletin provides the instructions on how to adjust the maximum EV battery charging threshold in the radio head unit.
- [21\-EE\-001H](/bulletins/10189806.md), 2021-04-06, Service bulletin: ELECTRICAL SYSTEM. This Service Information bulletin provides the instructions on how to adjust the maximum EV battery charging threshold in the radio head unit.

JSON: [/v1/bulletins/10152866](/v1/bulletins/10152866)

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