Porsche bulletin No. 4-22
What it saysInstallation and conversion instructions for retrofitting the the trailer hitch - mechanical NHTSA’s full summary ↓
Porsche filed this with NHTSA as a service bulletin dated Jan 8, 2026, received Mar 3, 2022, about the trailer hitches — 5 documents under this number. It names 6 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 communicationInstallation and conversion instructions for retrofitting the the trailer hitch - mechanical
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| No. 4-22 | Service bulletin | Jan 8, 2026 | 11028376 | PDF, 1,258 KB |
| No. 4-22 | Service bulletin | Nov 4, 2024 | 11011160 | PDF, 1,598 KB |
| No. 4-22 | Service bulletin | Jun 9, 2022 | 10215419 | PDF, 1,583 KB |
| No. 4-22 | Service bulletin | Mar 10, 2022 | 10209803 | PDF, 46 KB |
| No. 4-22 | Service bulletin | Feb 10, 2022 | 10208594 | PDF, 1,604 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.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
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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 6 model years this bulletin names have filed 34 complaints with NHTSA since 2015. 7 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.
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
While driving on a major highway ( ) at over 60 MPH, we had a complete and catastrophic system wide shut down of our vehicle, culminating in our car grinding to a halt. This entire process elapsed over a 15-20 second period.
2024 Porsche Macan · Electrical System · filed with NHTSA Jun 21, 2026 · ODI 11745512
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.
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. 4-22 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. 4-22 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. 4-22 cover?
The manufacturer filed it against 6 model years: 2019 Porsche 911, 2026 Porsche Macan, 2025 Porsche Macan, 2024 Porsche Macan, 2023 Porsche Macan, 2022 Porsche Macan. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.