Porsche service campaign WRT9
What it saysPorsche intranet post with information on WRT9 Workshop Campaign - Reprogramming DME control unit NHTSA’s full summary ↓
Porsche filed this with NHTSA as a service campaign dated May 19, 2025, received Jun 2, 2025, about the engine — 2 documents under this number: No. 196-24 and 1 more. It names 3 model years (2021–2023). 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 communicationPorsche intranet post with information on WRT9 Workshop Campaign - Reprogramming DME control unit
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| No. 196-24 | Service campaign | May 19, 2025 | 11018772 | PDF, 142 KB |
| WRT9 | Service campaign | May 8, 2025 | 11019264 | PDF, 11 KB |
What the document itself lists
Part the bulletin names
| Part number | Description | Qty |
|---|---|---|
| 9Y0907559AB | May 19, 2025 | — |
Read by machine from the document NHTSA serves (5 pages), read Sep 30, 2026. A part number is shown only where it matches Porsche’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote.
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 3 model years this bulletin names have filed 30 complaints with NHTSA since 2015. 3 of them name Engine — 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 my 2021 Porsche Cayenne Base, which is equipped with the 3.0L V6 EA839 engine, I brought the vehicle to the dealership for a recall service. During inspection, the dealership found a leaking water pump and quoted $8,500 for repairs. There were no visible signs of a coolant leak on the ground, indicating an internal seal failure.
2021 Porsche Cayenne · Engine · filed with NHTSA Aug 31, 2026 · ODI 11760942
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 engine
Source: same model, same component group158 other manufacturer communications filed against the Porsche Cayenne under the same component group (engine), newest first. The eight newest are listed; the rest are on the Porsche list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| No. 31-26 | Service bulletin | Sep 22, 2026 | Symptom based workshop manual for a Warning Message in Instrument Cluster: Fault Memory Entry “P060700 - Control Unit Reset” in The Front/Re… |
| No. 30-26 | Service bulletin | Sep 22, 2026 | Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils |
| No. 29-26 | Service bulletin | Sep 22, 2026 | Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils |
| No. 27-26 | Service bulletin | Sep 22, 2026 | Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils. Note that the bulletin covers all models back to model year 198… |
| No. 25-26 | Service bulletin | Sep 22, 2026 | Manufacturer's Certificate for Overview of Approved Porsche A40 Engine Oils. Note that this bulletin covers all vehicles from model year 199… |
| No. 36-26 | Service bulletin | Sep 8, 2026 | Symptom based workshop manual for Door Window Moves Up / Down Very Slowly or Reverses |
| GR13D803 | Service bulletin | Aug 28, 2026 | Parts Withdrawal - Control Valve |
| GR13D802 | Service bulletin | Aug 10, 2026 | Parts Information for Parts Withdrawal - Coolant Regulator Housing |
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 WRT9 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 WRT9 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 WRT9 cover?
The manufacturer filed it against 3 model years: 2023 Porsche Cayenne, 2022 Porsche Cayenne, 2021 Porsche Cayenne. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.