Porsche bulletin No. 2308
What it saysInstructions on advanced technical information for the lightweight glass panes cracked NHTSA’s full summary ↓
Porsche filed this with NHTSA as a service bulletin dated May 18, 2023, received May 3, 2023, about the visibility/wiper — 2 documents under this number. It names 6 model years (2021–2023). 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 communicationInstructions on advanced technical information for the lightweight glass panes cracked
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| No. 2308 | Service bulletin | May 18, 2023 | 10237419 | PDF, 183 KB |
| No. 2308 | Service bulletin | Apr 7, 2023 | 10235387 | PDF, 716 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 9P1909000CN | — | — | |
| 9Y0909000AQ | — | — |
Read by machine from the document NHTSA serves (3 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.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
Find the glass, side/rear for the 2023 911 →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
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 6 model years this bulletin names have filed 55 complaints with NHTSA since 2015. 9 of them name Electrical System — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
Battery completely discharged and the safety switch in the battery malfunctions and battery can not be charged again. There are many complaints seen online about the battery problems Porsche has. This strands the car and me the driver. The dealer and independent mechanics said the same.
2021 Porsche Cayenne · Electrical System · filed with NHTSA Aug 6, 2026 · ODI 11755286
Water intrusion into the rear of the vehicle flooded due to a manufacturers defect. this area houses the battery and other electrical wiring. The water created a potential electrocution and short of much of the wiring, but the rust contaminated the air quality in the vehicle.
2021 Porsche Macan · Electrical System · filed with NHTSA Jun 23, 2026 · ODI 11745933
Rear camera has failed twice since the recall was performed. The recall was performed on 20 May 2026. The first failure occurred on 27 May 2026. The second on 1 July 2026
2023 Porsche 911 · Electrical System · filed with NHTSA Jul 3, 2026 · ODI 11748176
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 visibility/wiper
Source: same model, same component group56 other manufacturer communications filed against these Porsche models under the same component group (visibility/wiper), newest first. The eight newest are listed; the rest are on the Porsche list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| No. 34-26 | Service bulletin | Sep 29, 2026 | Manufacturer's Certificate for Approval: Wheels and Tires. Note that this bulletin covers MY25+ 911 GT3, GT3 Touring, and GT3 S/C |
| No. 96-26 | Service bulletin | Sep 24, 2026 | Symptom-based workshop manual for Noises from Front Wiper Blade |
| No. 37-26 | Service bulletin | Sep 22, 2026 | Symptom based workshop manual for Information Messages Regarding Assistance System Failures, Fault Memory Entry: Implausible Chassis Number… |
| 43-26 | Warranty extension | Sep 1, 2026 | Technical Information for Warranty Extension for Front Door Wiring Harness related to Real Top View (RTV) issues |
| No. 80-26 | Service bulletin | Aug 25, 2026 | Symptom-based workshop manual for Reworking Squeaking and/or Creaking Noises from the Panoramic Roof Area - Roof Module and Roof Trim Panel |
| WTL3 | Service campaign | Aug 21, 2026 | Technical Information for Workshop Campaign WTL3 - Replacing Seal for Roof Module. Note that this Campaign is only applicable to all Cayenne… |
| No. 76-26 | Service bulletin | Aug 18, 2026 | Technical Information for Replacement Requirement for Left Door Window Pane - Change of Supplier: Using the Door Window Panes of the 911… |
| No. 2601.1 | Service bulletin | May 26, 2026 | Instructions on advanced technical information for G2. II Panamera - Exclusive Design Taillight Faulty |
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. 2308 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. 2308 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. 2308 cover?
The manufacturer filed it against 6 model years: 2023 Porsche 911, 2022 Porsche 911, 2021 Porsche 911, 2021 Porsche Cayenne, 2021 Porsche Macan, 2021 Porsche Panamera. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.