Porsche over-the-air update WTH1
What it saysPorsche intranet post for Campaign WTH1 Over-the-Air (OTA) Update - Reprogramming high-voltage central box (JX6) NHTSA’s full summary ↓
Porsche filed this with NHTSA as an over-the-air update dated Aug 24, 2026, received Sep 4, 2026, about the fuel/propulsion system. It names 1 model year (2026). An over-the-air update 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.
Get the next Porsche Macan bulletin by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationPorsche intranet post for Campaign WTH1 Over-the-Air (OTA) Update - Reprogramming high-voltage central box (JX6)
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| WTH1 | Over-the-air update | Aug 24, 2026 | 11037065 | PDF, 8 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.
Email me new Porsche bulletins for the Macan
A weekly email, sent only in a week when Porsche files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
More bulletins about the fuel/propulsion system
Source: same model, same component group12 other manufacturer communications filed against the Porsche Macan under the same component group (fuel/propulsion system), newest first. The eight newest are listed; the rest are on the Porsche list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| nO. d766 | Service bulletin | Feb 23, 2026 | Parts information for parts withdrawal involving the fuel filler flap and the charge cable for mains socket. Part numbers 976809857E and 7PP… |
| No. D764 | Service bulletin | Feb 13, 2026 | Parts information for parts withdrawal involving the multi-purpose additive for gasoline. Part number is 00004320902. The vehicles affected… |
| No. D756 | Service bulletin | Jan 30, 2026 | Parts information for parts withdrawal involving the - Diagnosis Pump for Fuel System 958906243B and 958906243A. Vehicles affected are ones… |
| No. 02-25 | Service bulletin | Jan 5, 2026 | Technical information for Need For Replacement of High-Voltage Battery On Vehicles Up to Model Year 2024: Observe Specified Procedure… |
| No. 2505 | Service bulletin | May 6, 2025 | Advanced Technical Information - Macan (95B. III)- Lean Mixture Faults at Altitude |
| No. 2501 | Service bulletin | Apr 17, 2025 | Advanced Technical Information - E3. II Cayenne PHEV: DME P242100 - Fuel Tank Isolation Valve for Tank Ventilation System - Stuck Open |
| No. 06-25 | Service bulletin | Apr 17, 2025 | Technical Information - Warning Message “Chassis Failed” / Fault Memory Entry “C12EF00” in the Control Unit for Chassis Control (PASM) as Pa… |
| No. 04-25 | Service bulletin | Mar 7, 2025 | Symptom-based workshop manual - Incorrect Representation of the Vehicle Silhouette in the Instrument Cluster: Check and, if necessary, Updat… |
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 WTH1 a recall?
No. A over-the-air update 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 WTH1 repair free?
A over-the-air update 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 WTH1 cover?
The manufacturer filed it against 1 model year: 2026 Porsche Macan. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.