Porsche bulletin No. 08-25
What it saysTechnical Information - Important Information on External Power Connection and Jump-Lead Starting (08/25) NHTSA’s full summary ↓
Porsche filed this with NHTSA as a service bulletin dated Mar 28, 2025, received Mar 6, 2025, about the fuel/propulsion system — 2 documents under this number. It names 9 model years (2024–2026). 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 - Important Information on External Power Connection and Jump-Lead Starting (08/25)
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| No. 08-25 | Service bulletin | Mar 28, 2025 | 11016721 | PDF, 622 KB |
| No. 08-25 | Service bulletin | Mar 1, 2025 | 11015158 | PDF, 74 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: 2026 Porsche 718 Cayman.
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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What owners reported
Source: NHTSA complaint databaseOwners of the 8 model years this bulletin names have filed 33 complaints with NHTSA since 2015. 13 of them name Electrical System, Engine, Fuel/Propulsion 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 motor experienced a catastrophic failure causing the rod to blow through the top of the engine, cutting a fuel line and causing a fire. It was later determined and passed to me via unofficial sources that this was due to a manufacturing defect where the incorrect camshaft bearings were used on specific pistons.
2025 Porsche 718 · Engine · filed with NHTSA May 29, 2026 · ODI 11740939
I was driving on the highway at 60mph on a 4 month old 2025 Porsche Macan Ev 4S. I turned off the AC for both driver and passenger. I suddenly started seeing increasingly larger clouds of black smoke coming out of the passenger side of the cabin, and a clear and increasing smell of something burning.
2025 Porsche Macan · Electrical System · filed with NHTSA Oct 10, 2025 · ODI 11692623
The left usb-c port does not work and the rearview camera image may not display when the vehicle is placed in reverse. As such, the vehicle fails to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."
2025 Porsche Macan · Electrical System · filed with NHTSA Aug 27, 2026 · ODI 11759899
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 group30 other manufacturer communications filed against these Porsche models 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 |
|---|---|---|---|
| WTL2 | Service campaign | Sep 1, 2026 | Porsche intranet posting for Campaign WTL2 – Replacing Electric Passenger Compartment Heater |
| WTL5 | Over-the-air update | Aug 24, 2026 | Porsche intranet posting for Campaign WTL5 Over-the-Air (OTA) Update– Reprogramming the high-voltage battery control unit (BMCe) |
| WTH1 | Over-the-air update | Aug 24, 2026 | Porsche intranet post for Campaign WTH1 Over-the-Air (OTA) Update - Reprogramming high-voltage central box (JX6) |
| WNM9 | Service campaign | Jul 9, 2026 | Re-Programming DME Control Unit (Workshop Campaign) |
| WTB0 | Service campaign | Jul 6, 2026 | Reprogramming the engine ECU to resolve fan blockage fault codes |
| 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… |
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. 08-25 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. 08-25 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. 08-25 cover?
The manufacturer filed it against 9 model years: 2025 Porsche 718, 2025 Porsche 911, 2025 Porsche Cayenne, 2025 Porsche Macan, 2024 Porsche Macan, 2025 Porsche Panamera and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.