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Home›Bulletins›Porsche› No. 11-25-4
Manufacturer communication · Service bulletin

Porsche bulletin No. 11-25-4

Porsche filed this with NHTSA as a service bulletin dated Aug 25, 2026, received Sep 4, 2026, about the forward collision avoidance. It names 24 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.

2026 Porsche 911: every bulletin →Every Porsche bulletin on file →Porsche’s own VIN lookup →

What the bulletin says

Source: NHTSA's summary of the manufacturer's communication

Technical Information for White Messages Regarding Driver Assistance Systems in Conjunction with Passive Fault Memory Entries in the ZFAS Control Unit

Kind Service bulletin Manufacturer date Aug 25, 2026 Received by NHTSA Sep 4, 2026 Components Forward Collision Avoidance, Back Over Prevention, Lane Departure

Document filed under this number

DocumentKindDatedNHTSA id
No. 11-25-4Service bulletinAug 25, 202611037046

The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5; the full text comes from the manufacturer or a dealer. 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. Quote it at a service desk; it is what the dealer’s system is keyed on.

Model years it names

Source: as the manufacturer filed them
2026 Porsche 9112025 Porsche 9112024 Porsche 9112023 Porsche 9112022 Porsche 9112021 Porsche 9112020 Porsche 9112026 Porsche Cayenne2025 Porsche Cayenne2024 Porsche Cayenne2023 Porsche Cayenne2022 Porsche Cayenne2021 Porsche Cayenne2020 Porsche Cayenne2019 Porsche Cayenne2025 Porsche Panamera2024 Porsche Panamera2026 Porsche Taycan2025 Porsche Taycan2024 Porsche Taycan2023 Porsche Taycan2022 Porsche Taycan2021 Porsche Taycan2020 Porsche Taycan

A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.

Common questions

Source: NHTSA, 49 CFR 579.5

Is Porsche No. 11-25-4 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. 11-25-4 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.

Which vehicles does No. 11-25-4 cover?

The manufacturer filed it against 24 model years: 2026 Porsche 911, 2025 Porsche 911, 2024 Porsche 911, 2023 Porsche 911, 2022 Porsche 911, 2021 Porsche 911 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.

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