Koenigsegg bulletin TSB-25431-01
What it saysAn updated fuse has been implemented to improve the power steering system performance during extended full lock operation. NHTSA’s full summary ↓
Koenigsegg filed this with NHTSA as a service bulletin dated Oct 6, 2025, received Nov 3, 2025, about the electrical system. It names 3 model years (2019–2021). 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 communicationAn updated fuse has been implemented to improve the power steering system performance during extended full lock operation.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| TSB-25431-01 | Service bulletin | Oct 6, 2025 | 11024706 | PDF, 129 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.
Model years it names
Source: as the manufacturer filed themAlso filed against model years this site has no page for: 2021 Koenigsegg Regera.
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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More bulletins about the electrical system
Source: same model, same component group1 other manufacturer communication filed against the Koenigsegg Regera under the same component group (electrical system), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| TSB-25473-01 | Service bulletin | Nov 21, 2025 | The immobilizer cable may not be routed according to the standards and may be damaged or kinked. This can affect the communication to the i… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Koenigsegg, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Koenigsegg TSB-25431-01 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 TSB-25431-01 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 TSB-25431-01 cover?
The manufacturer filed it against 3 model years: 2020 Koenigsegg Regera, 2019 Koenigsegg Regera, 2021 Koenigsegg Regera. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.