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Manufacturer communication · Service bulletin

Porsche bulletin 53/26 4005

What it saysAdditional Test Instructions for Rim Damage on the Front Axle (53/26) NHTSA’s full summary ↓

Porsche filed this with NHTSA as a service bulletin dated Jun 9, 2026, received Jul 8, 2026, about the wheels. It names 2 model years (2025–2026). 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.

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What the bulletin says

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

Additional Test Instructions for Rim Damage on the Front Axle (53/26)

Kind Service bulletin Manufacturer date Jun 9, 2026 Received by NHTSA Jul 8, 2026 Components Wheels

Document filed under this number

DocumentKindDatedNHTSA idAt NHTSA
53/26 4005Service bulletinJun 9, 202611034801PDF, 49 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 them

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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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.

What owners reported

Source: NHTSA complaint database

Owners of the 2 model years this bulletin names have filed 3 complaints with NHTSA since 2015.

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 wheels

Source: same model, same component group

31 other manufacturer communications filed against the Porsche 911 under the same component group (wheels), newest first. The eight newest are listed; the rest are on the Porsche list.

NumberKindDatedNHTSA’s summary
24-26Service bulletinAug 31, 2026Manufacturer's Certificate for approved wheels and tires. Also includes model year 2024 911 S/T and GT3 Touring.
23-26Service bulletinAug 31, 2026Manufacturer's Certificate for approved wheels and tires
40/26 4407Service bulletinJun 30, 2026Wheel Bolt Replacement Requirement - Change from Wheel Bolts with Aluminum Washers to Wheel Bolts with Steel Washers (40/26)
109/21 4407Service bulletinJun 3, 2026Noise Symptom – Clicking Noises from the Area of the Front Axle: Observe Specified Procedure (SY 109/21)
No. 164-24-1Service bulletinMay 26, 2026Technical information for a Safety Pin on the Locking Unit in the Central Wheel Lock cannot be Pressed In / Jammed: Observe Specified Proced…
No. 11-23Service bulletinMay 26, 2026Installation and conversion instructions for the trailer hitch on the Cayenne. Model years not listed - please refer to PDF for more informa…
No. 1506.2Service bulletinApr 23, 2026Instructions on advanced technical information for center-locking wheel nut tightening.
No. 24-23Service bulletinMar 31, 2026Symptom-Based workshop manual for the power transmission - manual upshifting from first to second gear is not possible. reprogramming PDK co…

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.

Photo: Christian Buehner / Unsplash

Common questions

Source: NHTSA, 49 CFR 579.5

Is Porsche 53/26 4005 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 53/26 4005 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 53/26 4005 cover?

The manufacturer filed it against 2 model years: 2026 Porsche 911, 2025 Porsche 911. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.