Porsche service campaign WNM9
What it saysRe-Programming DME Control Unit (Workshop Campaign) NHTSA’s full summary ↓
Porsche filed this with NHTSA as a service campaign dated Jul 9, 2026, received Aug 5, 2026, about the fuel/propulsion system — 1 document under this number: 171/22. It names 1 model year (2019). A service campaign is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationRe-Programming DME Control Unit (Workshop Campaign)
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 171/22 | Service campaign | Jul 9, 2026 | 11035743 | PDF, 228 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 1 model year this bulletin names have filed 2 complaints with NHTSA since 2015.
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 fuel/propulsion system
Source: same model, same component group15 other manufacturer communications filed against the Porsche 911 under the same component group (fuel/propulsion system), newest first. The eight newest are listed; the rest are on the Porsche list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| WTB0 | Service campaign | Jul 6, 2026 | Reprogramming the engine ECU to resolve fan blockage fault codes |
| nO. d766 | Service bulletin | Feb 23, 2026 | Parts information for parts withdrawal involving the fuel filler flap and the charge cable for mains socket. Part numbers 976809857E and 7PP… |
| No. D764 | Service bulletin | Feb 13, 2026 | Parts information for parts withdrawal involving the multi-purpose additive for gasoline. Part number is 00004320902. The vehicles affected… |
| No. D756 | Service bulletin | Jan 30, 2026 | Parts information for parts withdrawal involving the - Diagnosis Pump for Fuel System 958906243B and 958906243A. Vehicles affected are ones… |
| No. 52-25 | Service bulletin | Jan 5, 2026 | Technical information on a Warning Messages / Information Messages for Gasoline Particle Filter (OPF): Provision of Supporting Diagnostic In… |
| No. 02-25 | Service bulletin | Jan 5, 2026 | Technical information for Need For Replacement of High-Voltage Battery On Vehicles Up to Model Year 2024: Observe Specified Procedure… |
| No. 2501 | Service bulletin | Apr 17, 2025 | Advanced Technical Information - E3. II Cayenne PHEV: DME P242100 - Fuel Tank Isolation Valve for Tank Ventilation System - Stuck Open |
| No. 06-25 | Service bulletin | Apr 17, 2025 | Technical Information - Warning Message “Chassis Failed” / Fault Memory Entry “C12EF00” in the Control Unit for Chassis Control (PASM) as Pa… |
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 WNM9 a recall?
No. A service campaign 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 WNM9 repair free?
A service campaign is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does WNM9 cover?
The manufacturer filed it against 1 model year: 2019 Porsche 911. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.