Hyundai bulletin 26-AD-001H
What it saysSome 2019MY and newer vehicles equipped with a front view camera may illuminate certain warning lights and trigger DTC C272246 fault code for the front camera. NHTSA’s full summary ↓
Hyundai filed this with NHTSA as a service bulletin dated Feb 25, 2026, received Mar 7, 2026, about the forward collision avoidance — 1 document under this number: 26-AD-001H TSB. It names 36 model years (2020–2026). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationSome 2019MY and newer vehicles equipped with a front view camera may illuminate certain warning lights and trigger DTC C272246 fault code for the front camera. In the following cases, the front camera auto-calibration range may be exceeded while driving: • If the front camera is not properly installed and is completely or partially detached. • In case of excessive changes affecting the vehicle's balance (e.g., loading excessively heavy cargo in a specific location of the vehicle, or significant under-inflation of the tires). • Specific road conditions affecting the vehicle's balance (e.g., excessive road crown) This TSB provides instructions on how to service the vehicle when the front camera related warning light(s) are triggered due to system out of calibration (DTC_C272246).
Trouble codes it names: C2721 C2722 all 2 read from the document itself; NHTSA’s summary names none
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 26-AD-001H TSB | Service bulletin | Feb 25, 2026 | 11029906 | PDF, 385 KB |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
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Model years it names
Source: as the manufacturer filed themAlso filed against model years this site has no page for: 2026 Hyundai Ioniq 6; 2026 Hyundai Ioniq 6 N.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 34 model years this bulletin names have filed 4,618 complaints with NHTSA since 2015. 888 of them name Forward Collision Avoidance, Lane Departure, Exterior Lighting — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
On the 2025 Hyundai Tucson, the 25 owners who gave an odometer reading for Forward Collision Avoidance reported it at a median of 5,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
The lake keep assist safety feature works inconsistently. Many times, the system has allowed my vehicle to cross the yellow or white lines, when it shouldn't have. Even worse, during wintertime, the vehicle gets confused as to what is road and what is not, jerking the vehicle in directions that it shouldn't be going (either off the road…
2026 Hyundai Santa Cruz · Lane Departure · filed with NHTSA May 22, 2026 · ODI 11739509
On Monday I was driving home from work going 45 mph when my forward collision warning came on and the car stopped. However, there was no one in front of me. This was extremely dangerous and if there was a car behind me I could have been hit. I am extremely scared to drive this car. I had it towed to Lynne’s Hyundai in Bloomfield NJ.
2024 Hyundai Kona · Forward Collision Avoidance · filed with NHTSA Mar 9, 2025 · ODI 11647205
Making a left turn against oncoming traffic into a convenience store parking lot. There was a car in the driveway waiting to exit the convenience store parking lot. As I crossed the oncoming traffic lane the crash avoidance light on the dash came on and the brakes locked up nearly causing me to be broadsided by the oncoming traffic.
2025 Hyundai Santa Cruz · Forward Collision Avoidance · filed with NHTSA Sep 15, 2026 · ODI 11764533
In depth: 2026 Hyundai Tucson automatic emergency braking problems → · 2025 Hyundai Tucson automatic emergency braking problems →
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the forward collision avoidance
Source: same model, same component group2 other manufacturer communications filed against these Hyundai models under the same component group (forward collision avoidance), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SERVICE CAMPAIGN TCF | Service campaign | Sep 18, 2024 | Certain Kona (SX2) vehicles may exhibit a warning light ON in the cluster related to the “Check Forward Safety system” due to software inten… |
| 24-BE-005H | Service bulletin | Mar 20, 2024 | Certain 2021~2022MY Elantra (CN7/CN7A) vehicles may exhibit a warning light with DTC C1620, caused by a distorted signal due to internal con… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Hyundai, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Hyundai 26-AD-001H a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the 26-AD-001H repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every Hyundai warranty extension on file lists the ones Hyundai has filed.
Which vehicles does 26-AD-001H cover?
The manufacturer filed it against 36 model years: 2026 Hyundai Elantra, 2025 Hyundai Elantra, 2024 Hyundai Elantra, 2023 Hyundai Elantra, 2022 Hyundai Elantra, 2021 Hyundai Elantra and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.