Tesla bulletin SB-26-40-001
What it saysOn certain Cybertruck vehicles, the halfshaft bolts may lose torque, which may cause a loud grinding noise if the hub and axle facespline teeth become unseated and damaged. NHTSA’s full summary ↓
Tesla filed this with NHTSA as a service bulletin dated Mar 26, 2026, received Feb 3, 2026, about the power train — 2 documents under this number. It names 2 model years (2024–2025). 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 communicationOn certain Cybertruck vehicles, the halfshaft bolts may lose torque, which may cause a loud grinding noise if the hub and axle facespline teeth become unseated and damaged. If axle grinding noise is present before starting this bulletin, replace the hub, halfshaft, and halfshaft bolt on the impacted corner. Replace the remaining halfshaft bolts on the unaffected halfshaft locations. Then, run a Double Pedal Torque Test to confirm the hub and halfshaft facespline teeth are properly seated. If no axle grinding noise is present before starting this bulletin, replace all 4 halfshaft bolts and run a Double Pedal Torque Test to confirm the hub and halfshaft facespline teeth are properly seated.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SB-26-40-001 | Service bulletin | Mar 26, 2026 | 11030614 | |
| SB-26-40-001 | Service bulletin | Jan 21, 2026 | 11028090 |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 2009788-00-A | BLT,HHL,M16-1.5x80,[109],G0410,SM,A02 | 4 | eBay Motors → |
| 1250171-00-D | — | — | |
| 1250161-00-C | — | — | |
| 1250119-00-B | — | — | |
| 1250169-00-B | DRIVEN HUB-6X139.7MM PCD-180MM FLANGE | — | eBay Motors → |
Read by machine from the document NHTSA serves (5 pages), read Sep 30, 2026. A part number is shown only where it matches Tesla’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.
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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.
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What owners reported
Source: NHTSA complaint databaseOwners of the 2 model years this bulletin names have filed 204 complaints with NHTSA since 2015.
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 power train
Source: same model, same component group5 other manufacturer communications filed against the Tesla Cybertruck under the same component group (power train), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SB-24-40-007 | Service bulletin | Oct 4, 2024 | Certain Dual Motor Cybertruck vehicles are equipped with a Rear Drive Unit (RDU) inverter with an internal component that does not meet Tesl… |
| SB-24-40-006 | Service bulletin | Oct 4, 2024 | Certain Dual Motor Cybertruck vehicles are equipped with a Rear Drive Unit (RDU) with an internal component that does not meet Tesla specifi… |
| SB-24-40-004 | Service bulletin | Oct 4, 2024 | On certain Cybertruck vehicles, the Rear Drive Unit (RDU) oil fill plug might not have been torqued to specification. |
| SB-24-39-003 | Service bulletin | Oct 4, 2024 | Certain Tri Motor Cybertruck vehicles are equipped with a Front Drive Unit (FDU) with an internal component that does not meet Tesla specifi… |
| SB-24-30-001 | Service bulletin | May 2, 2024 | On some Cybertruck vehicles, some underbody fasteners may not have been torqued to specification. |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Tesla, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Tesla SB-26-40-001 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 SB-26-40-001 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.
Which vehicles does SB-26-40-001 cover?
The manufacturer filed it against 2 model years: 2025 Tesla Cybertruck, 2024 Tesla Cybertruck. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.