Tesla bulletin SB-25-16-004
What it saysOn certain Model S and Model X vehicles, the HV battery umbrella valves, over time, may become damaged due to road debris. NHTSA’s full summary ↓
Tesla filed this with NHTSA as a service bulletin dated Sep 3, 2025, received Jul 4, 2025, about the electrical system — 2 documents under this number. It names 4 model years (2021–2022). 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 Model S and Model X vehicles, the HV battery umbrella valves, over time, may become damaged due to road debris. Replace all 5 umbrella valves with updated parts. This new revision, R1, updates the affected Countries/Regions.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SB-25-16-004 | Service bulletin | Sep 3, 2025 | 11023641 | |
| SB-25-16-004 | Service bulletin | Jun 4, 2025 | 11020190 |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 1667216-00-D | Parts Required | — | eBay Motors → |
| 1024173-00-A | THERMAL VENT ASSY, ENCLOSURE, HVB, P | — | eBay Motors → |
Read by machine from the document NHTSA serves (1 page), 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 4 model years this bulletin names have filed 490 complaints with NHTSA since 2015. 66 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.
Tesla provides a back-up input form to its touch screen -- namely voice commands. Voice commands operate, among other things, map positioning, HVAC, lighting. Unfortunately, as quiet as the car is, the voice commands are a roulette wheel of results. 80% accuracy in detecting the specific command is the best Tesla manages.
2022 Tesla Model S · Electrical System · filed with NHTSA Aug 17, 2022 · ODI 11479846
The start up chime that dings when the car starts plays CONTINUOUSLY while the car is driven. This is not only distracting, but it prevents the driver from hearing the other dings that are associated with the safety systems (collision warning, lane departure, etc.).
2021 Tesla Model S · Electrical System · filed with NHTSA Jan 27, 2022 · ODI 11449096
Compressor fails causing cooling of the battery to fail and AC in the car not to work. System sais AC reduced charging reduced. No Air at all. It seems to be a very common issue. This seems unsafe and is a major expense to fix. $2300+
2021 Tesla Model X · Electrical System · filed with NHTSA Aug 2, 2023 · ODI 11536030
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 group8 other manufacturer communications filed against these Tesla models under the same component group (electrical system), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SB-25-16-002 | Service bulletin | Sep 2, 2025 | On certain Model S and Model X vehicles built between approximately January 2021 and September 22, 2022, the High Voltage (HV) battery ports… |
| SB-25-16-003 | Service bulletin | Jun 3, 2025 | On certain Model S and Model X vehicles, the battery powered Pyrotechnic High Voltage (HV) Battery Disconnect will reach the end of its batt… |
| SB-24-17-005 | Service bulletin | Apr 3, 2025 | On certain Model S, Model X and Model Y vehicles, the interior camera requires replacement to mitigate reduced driver attentiveness detectio… |
| SB-24-21-002 | Service bulletin | Mar 21, 2025 | Some Model S and Model X vehicles with 1st Generation Global Navigation Satellite System (GNSS) antennas might suffer from lower-than-expect… |
| SB-25-17-004 | Service bulletin | Feb 28, 2025 | Some Model S and Model X vehicles with revision D interior cameras might suffer from lower-than-expected navigation signal strength under ce… |
| SB-24-21-001 | Service bulletin | Oct 1, 2024 | On certain Model S and Model X vehicles built before November 1, 2021, the vehicle may lack Bluetooth headphone hardware support for the rea… |
| SB-22-11-002 R1 | Service bulletin | Apr 18, 2024 | One or both front door drive units and front door harnesses may require replacement due to corrosion. |
| SB23-00-006 | Service bulletin | Oct 27, 2023 | Some model year 2021-2023 Model S Plaid and Model X Plaid vehicles running a vehicle software version earlier than 2023.44 may require a veh… |
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-25-16-004 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-25-16-004 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-25-16-004 cover?
The manufacturer filed it against 4 model years: 2022 Tesla Model S, 2021 Tesla Model S, 2022 Tesla Model X, 2021 Tesla Model X. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.