Tesla bulletin SB-25-16-006
What it saysOn certain Cybertruck vehicles, the AC junction box to fast charge contactor HV harness might have a poor crimp connection, which may cause increased resistance and localized heating in the harness. NHTSA’s full summary ↓
Tesla filed this with NHTSA as a service bulletin dated Dec 8, 2025, received Jan 1, 2026, about the electrical system. 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 AC junction box to fast charge contactor HV harness might have a poor crimp connection, which may cause increased resistance and localized heating in the harness. If the ancillary cover is removed for other procedures, replace the AC junction box to fast charge contactor HV harness with version -J or later.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SB-25-16-006 | Service bulletin | Dec 8, 2025 | 11026874 | not found |
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. 63 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.
The contact owns a 2025 Tesla Cybertruck. The contact stated that while pulling into a charging station with the self-driving system activated, the vehicle stopped in front of the payment pole; however, the vehicle inadvertently accelerated through the barrier gate arm, and the arm was fractured.
2025 Tesla Cybertruck · Electrical System · filed with NHTSA Jun 23, 2026 · ODI 11745888
Received a “critical error” message on the screen and was advised to pull over. After doing so and putting the vehicle in “park” I was unable to take the vehicle out of park or move it at all. This would have been very dangerous if it occurred in an unsafe neighborhood or busy highway.
2024 Tesla Cybertruck · Electrical System · filed with NHTSA Aug 25, 2024 · ODI 11610705
In depth: 2024 Tesla Cybertruck 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 group5 other manufacturer communications filed against the Tesla Cybertruck under the same component group (electrical system), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SB-25-17-003 | Service bulletin | Feb 25, 2025 | On certain Cybertruck vehicles, the left body controller's printed circuit board was misaligned with its heatsink, which may cause the board… |
| UI_A006 | Over-the-air update | Dec 23, 2024 | Tesla identified a manufacturing flaw in certain Cybertruck vehicles. Driving range and performance can be impacted by this high voltage bat… |
| SB-24-16-008 | Service bulletin | Dec 6, 2024 | On certain Cybertruck vehicles, the HV battery ancillary harness may have been improperly routed, which might strain the harness branches an… |
| SB-24-17-004 | Service bulletin | Sep 10, 2024 | On certain Cybertruck vehicles, the backbone harness Flat Flex Cable (FFC) might have been misrouted, which may cause damage to the cable. |
| SB-24-16-007 | Service bulletin | Aug 12, 2024 | On certain Cybertruck vehicles, a rework to the ancillary cover is required to prevent damage to or to mitigate impact from the Ancillary Ba… |
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-25-16-006 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-25-16-006 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-25-16-006 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.