Porsche bulletin 26/26
What it saysNon-Deletable Fault Memory Entries for Clutch Slip/Speed Adjuster in Transmission Electronics (PDK) Control Unit After Repair (26/26) NHTSA’s full summary ↓
Porsche filed this with NHTSA as a service bulletin dated Jul 17, 2026, received Aug 5, 2026, about the power train. It names 8 model years (2016–2023). 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 communicationNon-Deletable Fault Memory Entries for Clutch Slip/Speed Adjuster in Transmission Electronics (PDK) Control Unit After Repair (26/26)
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 26/26 | Service bulletin | Jul 17, 2026 | 11035909 | PDF, 212 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 211 complaints with NHTSA since 2015. 4 of them name Power Train — 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 the car and warning light “possible R gear fault-driving permitted” came on. While driving on a highway at 50 mph, gear shift started malfunctioning and oscillating between 2nd and 4th gears and I could not change the gears. I lost control of the car speed and it would drop to 25-30mph even if I stepped on the gas pedal.
2022 Porsche Macan · Power Train · filed with NHTSA Oct 25, 2024 · ODI 11622034
On November 12, 2025 the transmission, power train, and/or other components on my Porsche Macan S failed. My Macan was parked (gear selector in "Park") on a level surface, the ignition turned off and the key removed from the ignition when it was tapped from behind by another vehicle that was exiting a residential garage.
2021 Porsche Macan · Power Train · filed with NHTSA Jan 15, 2026 · ODI 11711211
The Macan engine cooling system is defective and dangerous. It is made with a plastic cooling lines that are poorly placed (and concealed) where they are subject to high heat and pressure and therefore break suddenly.
2018 Porsche Macan · Power Train · filed with NHTSA Dec 30, 2025 · ODI 11707892
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 power train
Source: same model, same component group20 other manufacturer communications filed against the Porsche Macan under the same component group (power train), newest first. The eight newest are listed; the rest are on the Porsche list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| No. 28-26 | Service bulletin | Sep 22, 2026 | Technical information on Transmission Warning Message “P Not Available”, Fault Memory Entries for Parking Lock Buttons in the Shift Console… |
| No. 26-26 | Service bulletin | Sep 22, 2026 | Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils. Note that the bulletin includes all models back to model year 1… |
| 39/26 | Warranty extension | Jul 17, 2026 | Warranty Information: Warranty Extension for Transmission Electronics Control Unit (39/26) |
| No. D780 | Service bulletin | Apr 17, 2026 | Parts information for parts withdrawal involving the transmission oil. Part number 00004321012 is affected - the vehicles that use this part… |
| No. 13-25 | Service bulletin | Apr 2, 2026 | Installation and conversion instructions for Sports Exhaust System - Silver (0P8) / Dark Bronze (0P9). The affected vehicle is the Cayenne T… |
| No. D768.1 | Service bulletin | Mar 5, 2026 | Parts information for parts withdrawal involving the transmission fluid. Part number 00004321048. The cars affected are ones that use the pa… |
| No. D768 | Service bulletin | Feb 27, 2026 | Parts information for parts withdrawal involving the (00004321048) Transmission fluid. The vehicles affected are ones that use the part numb… |
| No. D761 | Service bulletin | Feb 12, 2026 | Parts information for parts withdrawal involving the 7 speed dual clutch gear box. Part numbers 0BG300047 and 0BG300047X are affected. Cars… |
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 26/26 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 26/26 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 26/26 cover?
The manufacturer filed it against 8 model years: 2023 Porsche Macan, 2022 Porsche Macan, 2021 Porsche Macan, 2020 Porsche Macan, 2019 Porsche Macan, 2018 Porsche Macan and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.