Porsche bulletin No. 151-23
What it saysTechnical information on WPM9 - replacing rear axle air spring bellows NHTSA’s full summary ↓
Porsche filed this with NHTSA as a service bulletin dated Apr 5, 2024, received May 2, 2024, about the power train. It names 1 model year (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 communicationTechnical information on WPM9 - replacing rear axle air spring bellows
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| No. 151-23 | Service bulletin | Apr 5, 2024 | 10253912 | PDF, 341 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 9Y0616025D | — | — | |
| 9Y0616026D | — | — |
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| PAF010332 | Hexagon flange nut, self-locking M14 x | 1.5 hrs |
| 10106403 | Hexagon collar nut, self-locking, M12 x | 1.5 hrs |
| WHT002305 | Square nut, M12 x | 1.5 hrs |
Read by machine from the document NHTSA serves (20 pages), read Sep 30, 2026. A part number is shown only where it matches Porsche’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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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.
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What owners reported
Source: NHTSA complaint databaseOwners of the 1 model year this bulletin names have filed 5 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 power train
Source: same model, same component group23 other manufacturer communications filed against the Porsche Cayenne under the same component group (power train), newest first. The eight newest are listed; the rest are on the Porsche list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| No. 28-26 | Service bulletin | Sep 22, 2026 | Technical information on Transmission Warning Message “P Not Available”, Fault Memory Entries for Parking Lock Buttons in the Shift Console… |
| No. 26-26 | Service bulletin | Sep 22, 2026 | Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils. Note that the bulletin includes all models back to model year 1… |
| No. 62-26 | Service bulletin | Sep 1, 2026 | Technical Information for Coolant Warning Light Lights Up: Suspected Coolant Loss on the Coolant Pump |
| No. 2304-2 | Service bulletin | Aug 24, 2026 | Information on Advanced Technical Information for E3. I/G2 V8 – Oil/Air Separator Membrane Failure |
| No. 2332.2 | Service bulletin | May 13, 2026 | Instructions on advanced technical information for E3 Cayenne Auxiliary Hydraulic Pump for Transmission Oil |
| No. D780 | Service bulletin | Apr 17, 2026 | Parts information for parts withdrawal involving the transmission oil. Part number 00004321012 is affected - the vehicles that use this part… |
| No. 13-25 | Service bulletin | Apr 2, 2026 | Installation and conversion instructions for Sports Exhaust System - Silver (0P8) / Dark Bronze (0P9). The affected vehicle is the Cayenne T… |
| No. D768.1 | Service bulletin | Mar 5, 2026 | Parts information for parts withdrawal involving the transmission fluid. Part number 00004321048. The cars affected are ones that use the pa… |
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. 151-23 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. 151-23 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. 151-23 cover?
The manufacturer filed it against 1 model year: 2024 Porsche Cayenne. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.