Porsche bulletin No. 27-23
What it saysSymptom based workshop manual for the Power Transmission Symptom - 7th Gear cannot be Engaged: Checking Locking Piece NHTSA’s full summary ↓
Porsche filed this with NHTSA as a service bulletin dated Feb 19, 2026, received Nov 7, 2023, about the wheels — 3 documents under this number. It names 10 model years (2017–2026). 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 communicationSymptom based workshop manual for the Power Transmission Symptom - 7th Gear cannot be Engaged: Checking Locking Piece
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| No. 27-23 | Service bulletin | Feb 19, 2026 | 11029191 | PDF, 270 KB |
| No. 27-23 | Service bulletin | Feb 19, 2026 | 11029188 | PDF, 267 KB |
| No. 27-23 | Service bulletin | Oct 10, 2023 | 10245045 | PDF, 398 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 10 model years this bulletin names have filed 47 complaints with NHTSA since 2015. 8 of them name Power Train, Wheels — 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.
On the day of delivery of this Porsche Approved Certified Pre-Owned vehicle (purchased May 24, 2022, from Porsche Nashua, Nashua, NH), traction control and all-wheel-drive warnings appeared on the drive home from the dealership. The valve lift solenoid/actuator was replaced under warranty; the vehicle spent 7 days in the shop.
2017 Porsche 911 · Power Train · filed with NHTSA Sep 29, 2026 · ODI 11767918
The contact owns a 2024 Porsche 911. The contact received notification of NHTSA Campaign Number: 24V809000 (Wheels); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair.
2024 Porsche 911 · Wheels · filed with NHTSA Dec 27, 2024 · ODI 11632716
On XXX, less than 24 hours after an authorized Porsche dealer released this 2024 911 as a successfully completed repair with the diagnostic codes cleared and no root cause documented, the vehicle suddenly lost motive power while traveling at highway speed.
2024 Porsche 911 · Power Train · filed with NHTSA Jul 11, 2026 · ODI 11749681
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 wheels
Source: same model, same component group30 other manufacturer communications filed against the Porsche 911 under the same component group (wheels), newest first. The eight newest are listed; the rest are on the Porsche list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 24-26 | Service bulletin | Aug 31, 2026 | Manufacturer's Certificate for approved wheels and tires. Also includes model year 2024 911 S/T and GT3 Touring. |
| 23-26 | Service bulletin | Aug 31, 2026 | Manufacturer's Certificate for approved wheels and tires |
| 40/26 4407 | Service bulletin | Jun 30, 2026 | Wheel Bolt Replacement Requirement - Change from Wheel Bolts with Aluminum Washers to Wheel Bolts with Steel Washers (40/26) |
| 53/26 4005 | Service bulletin | Jun 9, 2026 | Additional Test Instructions for Rim Damage on the Front Axle (53/26) |
| 109/21 4407 | Service bulletin | Jun 3, 2026 | Noise Symptom – Clicking Noises from the Area of the Front Axle: Observe Specified Procedure (SY 109/21) |
| No. 164-24-1 | Service bulletin | May 26, 2026 | Technical information for a Safety Pin on the Locking Unit in the Central Wheel Lock cannot be Pressed In / Jammed: Observe Specified Proced… |
| No. 11-23 | Service bulletin | May 26, 2026 | Installation and conversion instructions for the trailer hitch on the Cayenne. Model years not listed - please refer to PDF for more informa… |
| No. 1506.2 | Service bulletin | Apr 23, 2026 | Instructions on advanced technical information for center-locking wheel nut tightening. |
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. 27-23 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. 27-23 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. 27-23 cover?
The manufacturer filed it against 10 model years: 2026 Porsche 911, 2025 Porsche 911, 2024 Porsche 911, 2023 Porsche 911, 2022 Porsche 911, 2021 Porsche 911 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.