Porsche service campaign WSS4
Porsche filed this with NHTSA as a service campaign dated May 13, 2026, received Jun 5, 2026, about the electrical system. It names 6 model years (2020–2026). A service campaign is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationPorsche intranet posting with information on WSS4 Over-the-Air (OTA) Update – Reprogramming 11 kW (OBC) high-voltage charger
Document filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| WSS4 | Service campaign | May 13, 2026 | 11033659 |
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 themA 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 579.5Is Porsche WSS4 a recall?
No. A service campaign 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 WSS4 repair free?
A service campaign is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does WSS4 cover?
The manufacturer filed it against 6 model years: 2026 Porsche Taycan, 2024 Porsche Taycan, 2023 Porsche Taycan, 2022 Porsche Taycan, 2021 Porsche Taycan, 2020 Porsche Taycan. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.