Porsche bulletin No. 66-25
What it saysTechnical information for Front Seat Ventilation Does Not Function: Observe Specified Procedure NHTSA’s full summary ↓
Porsche filed this with NHTSA as a service bulletin dated Feb 3, 2026, received Oct 6, 2025, about the seats — 2 documents under this number. It names 7 model years (2020–2026). 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 communicationTechnical information for Front Seat Ventilation Does Not Function: Observe Specified Procedure
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| No. 66-25 | Service bulletin | Feb 3, 2026 | 11029118 | PDF, 293 KB |
| No. 66-25 | Service bulletin | Sep 3, 2025 | 11023942 | PDF, 440 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 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 7 model years this bulletin names have filed 279 complaints with NHTSA since 2015. 149 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 car is an electric car. I was driving on the highway and the car shut down completely leaving me without power steering, engine control error, electrical system error. I had to glide to the shoulder of the highway. Luckily traffic was light enough that I was able to get over on the highway and avoid getting hit by other vehicles.
2023 Porsche Taycan · Electrical System · filed with NHTSA Oct 18, 2026 · ODI 11771935
The contact owns a 2020 Porsche Taycan 4S. The contact received notification of NHTSA Campaign Number: 24V732000 (ELECTRICAL SYSTEM); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair.
2020 Porsche Taycan · Electrical System · filed with NHTSA Mar 6, 2025 · ODI 11646798
The contact owns a 2021 Porsche Taycan Turbo S. The contact received notification of NHTSA Campaign Number: 24V732000 (Electrical System); however, the part to do the recall repair was not yet available. The local dealer was contacted.
2021 Porsche Taycan · Electrical System · filed with NHTSA Jan 23, 2025 · ODI 11637890
In depth: 2020 Porsche Taycan 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 seats
Source: same model, same component group4 other manufacturer communications filed against the Porsche Taycan under the same component group (seats), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| No D769 | Service bulletin | Mar 9, 2026 | Parts information for Parts Withdrawal - Repair Set for Seat Occupied Sensor. Part numbers 9J1881256AJ, 9J1881256AK, 9J1881256AL, 9J1881256A… |
| No. D767 | Service bulletin | Feb 27, 2026 | Parts information for parts withdrawal for Repair Set for Seat Occupied Sensor. Parts involved are 95C881256F and 95C881256H. The cars affec… |
| No. ASA2 | Service bulletin | Jan 23, 2026 | Technical information for ASA2 - Replace Front Seat Cushion (Passenger Side) (Recall Campaign) |
| No. 2227.2 | Service bulletin | Apr 29, 2024 | Instructions on advanced technical information for the Taycan - squeaking noises from front seats |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Porsche, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Porsche No. 66-25 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 No. 66-25 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 Porsche warranty extension on file lists the ones Porsche has filed.
Which vehicles does No. 66-25 cover?
The manufacturer filed it against 7 model years: 2026 Porsche Taycan, 2025 Porsche Taycan, 2024 Porsche Taycan, 2023 Porsche Taycan, 2022 Porsche Taycan, 2021 Porsche Taycan and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.