Hyundai bulletin 24-TC-001H
What it saysThis bulletin provides instructions to update the all wheel drive engine control unit (AWD ECU) for certain AWD Palisade (LX2) vehicles to reduce the coupling noises when making turns. NHTSA’s full summary ↓
Hyundai filed this with NHTSA as a service bulletin dated Aug 15, 2024, received Sep 3, 2024, about the electrical system. It names 5 model years (2020–2024). 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.
Get the next Hyundai Palisade bulletin by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationWhat it applies to, as the document itself states it — the build window in the manufacturer’s own words, read by machine from the PDF NHTSA serves. The build date is on the certification label in the driver’s door jamb; the dealer settles a borderline vehicle by its VIN.
This bulletin provides instructions to update the all wheel drive engine control unit (AWD ECU) for certain AWD Palisade (LX2) vehicles to reduce the coupling noises when making turns.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 24-TC-001H | Service bulletin | Aug 15, 2024 | 11006822 | PDF, 319 KB |
What the document itself lists
The manufacturer titles it “AWD ECU SOFTWARE UPDATE FOR AWD COUPLING NOISE”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 95447-4G500 | — | — | |
| 95447-4G550 | AWD ECU SOFTWARE UPDATE FOR AWD COUPLING NOISE | — | eBay Motors → |
Read by machine from the document NHTSA serves (3 pages), read Sep 30, 2026. A part number is shown only where it matches Hyundai’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
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.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Email me new Hyundai bulletins for the Palisade
A weekly email, sent only in a week when Hyundai files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 5 model years this bulletin names have filed 2,116 complaints with NHTSA since 2015. 179 of them name Electrical System — 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.
Speedometer stopped working and went to Zero MPH June 1, 2022. Vehicle has only 2,800 miles on it. Shutting off and restarting the car did not solve this. Simultaneously, the car compass indicated wrong direction; a safety announcement came over the infotainment system repeatedly telling us we were driving the wrong way on the street (we…
2022 Hyundai Palisade · Electrical System · filed with NHTSA Jun 1, 2022 · ODI 11467028
1) first issue was a cracked windshield within the first 500 miles. Driving down the highway, no foreign object, suddenly a crack started to form. 2) second issue is a blind spot warning system alert when no cars are present. 3) third issue is automatic wiper that suddenly come on when no rain or debris are present.
2020 Hyundai Palisade · Electrical System · filed with NHTSA Apr 12, 2020 · ODI 11320885
2021 Palisade calligraphy - while driving on highway (comfor mode - cruise control) htrac error light came on. After stopping and shutting car off the error resolved for a few minutes and then came back on while driving. Noticed no power to rear wheels while driving - snowed next day- AWD vehicle became only FWD.
2021 Hyundai Palisade · Electrical System · filed with NHTSA Dec 31, 2020 · ODI 11385952
In depth: 2021 Hyundai Palisade electrical 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 electrical system
Source: same model, same component group24 other manufacturer communications filed against the Hyundai Palisade under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Hyundai list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 26-GI-003H | Service bulletin | Oct 27, 2026 | This bulletin provides information related to the navigation and head unit software changes introduced in the 2026 2nd Navigation Map and So… |
| 9D4 | Service campaign | Sep 1, 2026 | Certain Palisade (LX3) and Palisade Hybrid (LX3 HEV) vehicles may experience Over-the-Air (OTA) update failures due to outdated Central Comm… |
| LA39 | Warranty extension | Aug 29, 2026 | Some Palisade Hybrid (LX3 HEV) vehicles may illuminate the hybrid system warning light with Diagnostic Trouble Codes (DTC) P0C381C when the… |
| 26-BE-024H | Service bulletin | Aug 20, 2026 | Some Palisade (LX3) and Palisade Hybrid (LX3 HEV) vehicles may exhibit a 12-volt battery drain due to the passive entry feature of the Digit… |
| LA28 | Warranty extension | Jul 2, 2026 | Certain Palisade Hybrid (LX3 HEV) vehicles may illuminate the Malfunction Indicator Lamp (MIL) and display a false “Check Hybrid System” war… |
| 26-EE-007H | Service bulletin | Jun 17, 2026 | Some Palisade (LX2), Tucson (NX4), and Tucson Hybrid (NX4 HEV) vehicles may experience battery drain due to continuous operation of the cool… |
| 26-GI-002H | Service bulletin | May 27, 2026 | This bulletin provides information related to the navigation and head unit software changes introduced in the 2026 1st Navigation Map and So… |
| 9C0 | Service campaign | Apr 8, 2026 | Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink functions. This may be due to an occasiona… |
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 24-TC-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 24-TC-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 24-TC-001H cover?
The manufacturer filed it against 5 model years: 2024 Hyundai Palisade, 2023 Hyundai Palisade, 2022 Hyundai Palisade, 2021 Hyundai Palisade, 2020 Hyundai Palisade. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone. The document itself sets the build window: built 10 Apr 2019 – 10 Jan 2024 — the build date is on the certification label in the driver’s door jamb.