2021 Hyundai Tucson Emissions Logic ECM Update

Hyundai has launched Service Campaign 9C2, an important initiative to address elevated engine-out emissions in certain vehicles equipped with Theta II engines. This campaign specifically targets the 2019-2020 Hyundai Santa Fe (TMA), 2019 Hyundai Sonata (LFA), and 2019-2021 Hyundai Tucson (TL) models. The primary goal is to ensure these vehicles comply with Federal and California air quality standards.

This proactive measure, detailed in Technical Service Bulletin (TSB) 25-01-087H, involves an Engine Control Module (ECM) software update. This update is designed to improve the emissions logic, thereby reducing air pollutants to acceptable levels. Owners of affected vehicles, including the 2021 Hyundai Tucson, will receive this necessary repair at no charge.

Why This Matters

Elevated engine-out emissions mean that affected vehicles are releasing air pollutants that exceed established Federal and California standards. These standards are in place to protect public health and welfare from the adverse effects of air pollution. Hyundai's Service Campaign 9C2 is crucial for bringing these vehicles into compliance and minimizing their environmental impact.

What's Being Addressed

The core issue is the elevated engine-out emissions from certain Hyundai Santa Fe, Sonata, and Tucson vehicles equipped with Theta II engines. Specifically, this includes 2019-2020MY Santa Fe (TMA) models produced from May 23, 2018, to August 23, 2021; 2019MY Sonata (LFA) models produced from July 23, 2018, to September 30, 2019; and 2019-2021MY Tucson (TL) models produced from January 30, 2018, to February 04, 2021. The California Air Resources Board (CARB) has identified that these vehicles may be releasing air pollutants above regulatory limits.

Repair Procedure Summary

To resolve the elevated emissions, Hyundai dealerships will perform an Engine Control Module (ECM) software update. This update modifies the emissions logic within the ECM to ensure proper pollutant control. Technicians will follow the service procedure outlined in TSB 25-01-087H to complete this repair.

After the software update, an emissions sticker must be applied under the hood of the vehicle. This sticker serves as proof that the emissions system has been updated according to regulatory requirements. The entire process for this Hyundai Tucson emissions update is performed by Hyundai Certified technicians.

Required Parts

Dealers will utilize specific parts for this service campaign:

• Campaign Sticker: Part Number NP001-SC9C2. This sticker is applied under the hood to indicate the completion of the emissions update.
• Vehicle Emission - Proof of Correction Card: Part Number NP050-09006. For owners in states that have adopted California emissions regulations (such as CA, CO, CT, DE, ME, MD, MA, NJ, NY, OR, PA, RI, VT, WA), this card will be provided as proof of the completed emissions campaign, which may be required for vehicle registration.

Important Warnings and What Owners Should Know

• No Cost Repair: This service campaign, including the ECM software update and emissions sticker application, will be provided at no cost to the customer. Hyundai will cover all associated labor and parts.
• Mandatory Update: All affected vehicles, including the 2021 Hyundai Tucson, will require the ECM software update and the application of an emissions sticker under the hood during service.
• Customer Notification: Owners of affected vehicles are expected to be notified via First Class Mail starting in January 2026.
• Check Engine Light: If your vehicle experiences a "check engine light" related to emissions, please reach out to your nearest Hyundai dealership for assistance to schedule an appointment.
• Alternative Transportation: If your vehicle needs to be kept overnight for the repair, or if the repair duration is extended, Hyundai dealerships are recommended to offer alternative transportation options, such as a Service Rental Vehicle (SRC), 3rd Party Rental, or rideshare.

Owner Action

If you own a 2019-2020 Hyundai Santa Fe, 2019 Hyundai Sonata, or a 2019-2021 Hyundai Tucson, particularly a 2021 Hyundai Tucson, and receive notification for Service Campaign 9C2, it is important to schedule an appointment with your authorized Hyundai dealership. Even if you haven't received a letter yet, you can contact your dealer to inquire about the Hyundai Tucson emissions update.

The repair, which involves an ECM software update, will be performed at no charge to you. Be sure to discuss any need for alternative transportation with the dealership if your vehicle needs to be kept for an extended period. This campaign is a crucial step to ensure your vehicle meets environmental standards and continues to operate correctly.

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Source: NHTSA ID: 11025964