2021 Hyundai Tucson Emissions Logic Update (9C2)

Hyundai has announced an "IMPORTANT SERVICE CAMPAIGN", identified as campaign number 9C2, to address potential elevated engine-out emissions in certain vehicles equipped with the 2.4 GDI Theta II engine. This campaign involves an Engine Control Module (ECM) software update designed to improve engine combustion and fuel trim adaptations. Owners of affected vehicles, including the 2021 Hyundai Tucson, should schedule this essential service to ensure their vehicle complies with emissions standards.

This service campaign is crucial for maintaining your vehicle's emissions compliance and overall performance. The Hyundai Tucson emissions update is performed free of charge by authorized Hyundai dealers.

What's the Problem?

Hyundai has identified that certain vehicles may exhibit elevated engine-out emissions, potentially exceeding Federal and California standards. This issue specifically affects vehicles equipped with the 2.4 GDI Theta II engine.

The campaign applies to a range of models, including certain 2019-2020 Santa Fe, 2017-2018 Santa Fe Sport, 2015-2019 Sonata, and 2018-2021 Tucson vehicles. The primary concern is that these elevated emissions could lead to a failure during state-mandated emissions inspections, often referred to as a SMOG check.

Symptoms and Diagnosis

While the document does not list specific dashboard warning lights, the primary symptom an owner might encounter is a failed emissions inspection. If your vehicle fails a required SMOG check or emissions test, it could be due to the elevated engine-out emissions addressed by this campaign.

This condition is diagnosed during an emissions test, where the vehicle's exhaust output is measured against regulatory limits. The Hyundai Tucson emissions update is a preventative measure to ensure your vehicle passes these tests.

Repair Procedure Summary

To resolve the elevated emissions, Hyundai dealers will perform an update to the Engine Control Module (ECM) software. This software revision is designed to improve the engine's combustion efficiency and optimize fuel trim adaptations, thereby reducing engine-out emissions.

The procedure is straightforward and typically takes less than 30 minutes to complete. However, the dealership may require your vehicle for a longer period depending on their scheduling and workload. This service will be performed at "NO CHARGE" to you under Hyundai Service Campaign 9C2.

Important Warnings

Owners should be aware that failure to have this software update performed could have significant consequences. Specifically, not completing this service could cause your vehicle to fail an emissions inspection (SMOG check) when required under state law. Furthermore, it could be considered a lack of proper maintenance, potentially impacting your vehicle's full protection under the emissions warranty.

Owner Action

If you own an affected vehicle, including a 2021 Hyundai Tucson, you should contact your nearest Hyundai dealer to schedule an appointment for the ECM software update. You can find your local dealer and schedule service by calling 1-855-371-9460 or visiting www.hyundaiusa.com/campaignhome.

When scheduling online, you will need to enter your 17-digit Vehicle Identification Number (VIN) to confirm your vehicle's eligibility. After the update, if you are a registered owner in California or one of the states that adopted California emissions regulations (Colorado, Connecticut, Delaware, Maine, Maryland, Massachusetts, New Jersey, New York, Oregon, Pennsylvania, Rhode Island, Vermont, or Washington), your Hyundai dealer will provide a "Proof of Correction Certificate." This certificate should be kept with your vehicle records as it may be requested during your next vehicle registration renewal.

If you previously paid for a repair addressing this specific emissions problem, you may be eligible for reimbursement. Visit www.hyundaiusa.com/campaignhome, click the icon in the top right, select "Contact Us," and then choose the "Campaign Reimbursement" tile to submit your claim.

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Source: NHTSA ID: 11031416