# Service campaign 25\-01\-054H DN

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 campaign
- NHTSA id: 11021979
- Published by NHTSA: 2025\-08\-19
- Manufacturer's number: 25\-01\-054H DN
- Manufacturer's date: 2025\-08\-15
- Campaign id or software version: 968
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Certain 2017\-2019MY Elantra \(AD, ADA\) vehicles equipped with 2.0L ATK engines may be unable to complete diagnosis of the OBD\-II Fuel System Readiness Monitor. This bulletin provides instructions to perform a software update for the Engine Control Module \(ECM\) to revise control logic.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021979-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021979-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- 2017 to 2019 HYUNDAI ELANTRA

## Other bulletins for the same vehicles and component

- [9D3 OL](/bulletins/11037292.md), 2026-09-11, Service campaign: ENGINE; ELECTRICAL SYSTEM. Hyundai has become aware that your Hyundai Elantra equipped with a 2.0 ATK engine may have been incorrectly updated with Cylinder Noise Detection System \(CNDS\) software intended only for Korean\-built Elantra vehicles and may not meet specifications.
- [26\-01\-039H DN](/bulletins/11036204.md), 2026-08-15, Service campaign: ELECTRICAL SYSTEM; ENGINE. Certain Elantra \(ADA\) vehicles may have been incorrectly updated with Cylinder Noise Detection System \(CNDS\) software that can set DTC P132700; this software was intended only for Korean\-built Elantra \(AD\) vehicles. In addition, the California Air Resources Board has determined that these vehicles may be releasing air pollutants which exceed Federal and California standards.
- [26\-01\-039H TSB](/bulletins/11036202.md), 2026-08-15, Service campaign: ELECTRICAL SYSTEM; ENGINE. Certain Elantra \(ADA\) vehicles may have been incorrectly updated with Cylinder Noise Detection System \(CNDS\) software that can set DTC P132700; this software was intended only for Korean\-built Elantra \(AD\) vehicles. This bulletin provides instructions to perform a software update for the Engine Control Module \(ECM\) to revert to the original ROM ID, apply the emissions label under the hood, and provide the vehicle owner with Proof of Correction.
- [25\-01\-089H DCS](/bulletins/11027035.md), 2026-01-06, Other: ELECTRICAL SYSTEM. Upon customer's request ONLY, the Technical Service Bulletin \(TSB\) 25\-01\-089H provides the service procedure for installation of a key cylinder reinforcement protector assembly and two anti\-theft decals on the front windows. This repair procedure is being provided in addition to the previous Anti\-Theft software provided under Service Campaign 993 \(TSB 24\-01\-009H\-1\).
- [25\-01\-089H DN](/bulletins/11027034.md), 2026-01-06, Other: ELECTRICAL SYSTEM. In addition to the Anti\-Theft software provided under Service Campaign 993 \(TSB 24\-01\-009H\-1\), a zinc reinforced ignition cylinder protector hardware upgrade is being made available to customers upon request. This supplemental security measure is to be installed at the ignition switch location and provides additional protection against the social media theft method. Vehicles not equipped with an immobilizer during production at the factory are eligible. The repair procedure shall be performed and claimed upon customer request only. Any future repairs to these vehicles in which an installed ignition cylinder protector impacts required parts and/or labor, shall be covered by HMA. Please see TSB 25\-01\-089H for details.
- [25\-01\-089H TSB](/bulletins/11027033.md), 2026-01-06, Other: ELECTRICAL SYSTEM. This bulletin provides the service procedure for installation of a key cylinder reinforcement protector assembly and two anti\-theft decals on the front windows.
- [P33 OL](/bulletins/11026704.md), 2025-12-19, Other: ELECTRICAL SYSTEM. In response to this trend, we engineered a software upgrade that addresses the social media theft method and made it available to owners of eligible models free of charge at authorized Hyundai dealers since early 2023. In addition to the anti\-theft software, we’ve developed a new zinc\-reinforced ignition cylinder protector hardware upgrade that can be installed at the ignition cylinder location to provide additional protection against the social media theft method. Because your Hyundai vehicle with the VIN listed above \(“Subject Vehicle”\) was not factory\-equipped with an engine immobilizer and was previously eligible for the software upgrade, you are now eligible until March 31, 2027 to have the ignition cylinder protector installed — if you request it — at no cost to you through an authorized Hyundai dealership.
- [25\-01\-054H](/bulletins/11021978.md), 2025-08-19, Service campaign: ELECTRICAL SYSTEM. Certain 2017\-2019MY Elantra \(AD, ADA\) vehicles equipped with 2.0L ATK engines may be unable to complete diagnosis of the OBD\-II Fuel System Readiness Monitor. This bulletin provides instructions to perform a software update for the Engine Control Module \(ECM\) to revise control logic.
- [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.

JSON: [/v1/bulletins/11021979](/v1/bulletins/11021979)

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