Porsche bulletin No. 19-20
What it saysInstructions for retrofitting a sports exhaust on the new Cayenne. NHTSA’s full summary ↓
Porsche filed this with NHTSA as a service bulletin dated Jan 5, 2024, received Jul 2, 2020, about the electrical system — 2 documents under this number. It names 32 model years (2016–2024). 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 communicationInstructions for retrofitting a sports exhaust on the new Cayenne.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| No. 19-20 | Service bulletin | Jan 5, 2024 | 10249867 | PDF, 48 KB |
| No. 19-20 | Service bulletin | Jun 5, 2020 | 10176883 | not found |
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: 2022 Porsche Redundant 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 31 model years this bulletin names have filed 378 complaints with NHTSA since 2015. 107 of them name Electrical System, 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.
While driving my 2019 Porsche Cayenne S on the freeway, the check-engine light came on, followed by a message on the dashboard that read “Engine Control fault – Driving permitted – Visit workshop.” Moments later, the vehicle suddenly lost power and decelerated from about ~75 mph to around 55 mph, even though my foot was still on the…
2019 Porsche Cayenne · Engine · filed with NHTSA Nov 9, 2025 · ODI 11698394
While travelling on the freeway on 7/30/23, I experienced a "low oil pressure, shut down engine immediately" warning. I pulled over to the shoulder and was unable to restart the car. It was towed to Porsche Carlsbad dealership where it is awaiting analysis by Porsche. The car has 4900 miles on it and is under the MFG warranty
2021 Porsche 718 · Engine · filed with NHTSA Aug 7, 2023 · ODI 11537030
2019 Porsche Cayennes (and other Porsche models) have LiFe P04 lithium batteries that have an internal Battery Control Module that causes a "Battery Low " indication. Porsche has been updating the software/ firmware for this module, only for it to fail again. Eventually, the battery will fail, lose charge, and become dead.
2019 Porsche Cayenne · Electrical System · filed with NHTSA Nov 13, 2023 · ODI 11554814
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 group374 other manufacturer communications filed against these Porsche models 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. 35-26 | Service bulletin | Sep 29, 2026 | Technical information for a Malfunction Indicator Light Active / Warning Message All-Wheel Drive Disturbed: Fault Memory Entry “U140500 - Te… |
| No. 84-26 | Service bulletin | Sep 9, 2026 | Technical Information for Filler Flap on Vehicles with Hybrid Drive System (PHEV) Does Not Close |
| No. 81-26 | Service bulletin | Sep 8, 2026 | Technical Information for Yellow Warning Message “All-Wheel Drive System Malfunction”, “C12BEF6” and “C133700” in the All-Wheel Electronics… |
| WTK4 | Service campaign | Sep 1, 2026 | Technical Information for Campaign WTK4 – Reset Vehicle Electrical System Battery |
| No. 12-26 | Service bulletin | Sep 1, 2026 | Technical information for Damage to Nano Plug Contacts Due to Utilization of Incorrect Measuring Equipment |
| No. 2109-3 | Service bulletin | Aug 28, 2026 | Information on Advanced Technical Information for Critical 12V Li-ion Battery Recycling |
| 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 |
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. 19-20 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. 19-20 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. 19-20 cover?
The manufacturer filed it against 32 model years: 2023 Porsche 718, 2022 Porsche 718, 2021 Porsche 718, 2024 Porsche 911, 2023 Porsche 911, 2022 Porsche 911 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.