Porsche bulletin No. 79-22
What it saysTechnical information for Various PCM Central Computer Fault Corrections: Re-Programming PCM Central Computer and if Necessary Front Display and Control Panel NHTSA’s full summary ↓
Porsche filed this with NHTSA as a service bulletin dated Nov 15, 2025, received Sep 8, 2025, about the electrical system — 2 documents under this number. It names 8 model years (2019–2026). 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 Various PCM Central Computer Fault Corrections: Re-Programming PCM Central Computer and if Necessary Front Display and Control Panel
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| No. 79-22 | Service bulletin | Nov 15, 2025 | 11026373 | PDF, 101 KB |
| No. 79-22 | Service bulletin | Aug 15, 2025 | 11022915 | PDF, 149 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 8 model years this bulletin names have filed 93 complaints with NHTSA since 2015. 19 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 contact owns a 2019 Porsche MACAN. The contact stated that while driving at an undisclosed speed, the contact noticed an abnormal loud sound. In addition, the contact stated none of the safety features functioned as intended. The vehicle was taken to the dealer where it was diagnosed with a failed power control module.
2019 Porsche Macan · Electrical System · filed with NHTSA Jun 2, 2026 · ODI 11741620
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
Water intrusion into the rear of the vehicle flooded due to a manufacturers defect. this area houses the battery and other electrical wiring. The water created a potential electrocution and short of much of the wiring, but the rust contaminated the air quality in the vehicle.
2021 Porsche Macan · Electrical System · filed with NHTSA Jun 23, 2026 · ODI 11745933
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 electrical system
Source: same model, same component group124 other manufacturer communications filed against the Porsche Macan under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Porsche list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| No. 12-26 | Service bulletin | Sep 1, 2026 | Technical information for Damage to Nano Plug Contacts Due to Utilization of Incorrect Measuring Equipment |
| No. 2433-4 | Service bulletin | Aug 20, 2026 | Information on Advanced Technical Information for Porsche Mobile Charger NEMA Supply Cable Initialization Failure |
| No. 2315-1 | Service bulletin | Aug 20, 2026 | Information on Advanced Technical Information for Porsche Mobile Charger Plus (PMC+) Red LEDs and Fault B191E49 |
| No. 71-26 | Service bulletin | Aug 7, 2026 | Technical Information for The Second Hand of the Sport Chrono Clock (Stopwatch) Runs Unevenly or Jumps Anti-Clockwise |
| No. 34-26-1 | Service bulletin | Aug 4, 2026 | Technical Information for Windshield Water Ingress in the Area of the Front Overhead Console |
| 33/26 Update 2 | Service bulletin | Jul 22, 2026 | AC Charging Process in the Customer’s Home Network Not Working (33/26) |
| 33/26 | Service bulletin | Jul 20, 2026 | AC Charging Process in the Customer’s Home Network Not Working (33/26) |
| WTA6_UPDATE | Service campaign | Jul 7, 2026 | Software optimizations are available for various control units for the Macan Electric. |
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. 79-22 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. 79-22 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. 79-22 cover?
The manufacturer filed it against 8 model years: 2026 Porsche Macan, 2025 Porsche Macan, 2024 Porsche Macan, 2023 Porsche Macan, 2022 Porsche Macan, 2021 Porsche Macan and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.