Porsche bulletin No. D705
What it saysParts information for parts withdrawal for information on the cardan shaft and shock absorber. NHTSA’s full summary ↓
Porsche filed this with NHTSA as a service bulletin dated Dec 4, 2024, received Jan 7, 2025, about the suspension. It names 102 model years (2016–2026). 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 communicationParts information for parts withdrawal for information on the cardan shaft and shock absorber. The vehicles affected are cars that use part numbers 958521101, 958521101A, 9J1413031G
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| No. D705 | Service bulletin | Dec 4, 2024 | 11012556 | PDF, 287 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 958521101A | Cardan Shaft All parts with WE-Date | — | eBay Motors → |
| 9J1413031G | Shock Absorber All parts with WE-Date | — | eBay Motors → |
Read by machine from the document NHTSA serves (1 page), 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 themand 23 more on this site: 2021 Porsche Macan, 2020 Porsche Macan, 2019 Porsche Macan, 2018 Porsche Macan, 2017 Porsche Macan, 2016 Porsche Macan, 2025 Porsche Panamera, 2024 Porsche Panamera, 2023 Porsche Panamera, 2022 Porsche Panamera, 2021 Porsche Panamera, 2020 Porsche Panamera, 2019 Porsche Panamera, 2018 Porsche Panamera, 2017 Porsche Panamera, 2016 Porsche Panamera, 2026 Porsche Taycan, 2025 Porsche Taycan, 2024 Porsche Taycan, 2023 Porsche Taycan, 2022 Porsche Taycan, 2021 Porsche Taycan, 2020 Porsche Taycan.
Also filed against model years this site has no page for: 2017 Porsche 718; 2017 Porsche 718 Boxster S; 2018 Porsche 718 Boxster S; 2019 Porsche 718 Boxster S; 2026 Porsche 718 Cayman; 2017 Porsche 718 Cayman S; 2018 Porsche 718 Cayman S; 2019 Porsche 718 Cayman S; 2018 Porsche 718 Spyder; 2019 Porsche 718 Spyder; 2016 Porsche 918 Spyder; 2020 Porsche Baby Seat Latch; 2021 Porsche Baby Seat Latch; 2022 Porsche Baby Seat Latch; 2023 Porsche Baby Seat Latch; 2024 Porsche Baby Seat Latch; 2023 Porsche Carrera; 2023 Porsche Carrera 4; 2023 Porsche Carrera 4 GTS; 2023 Porsche Carrera 4S; 2023 Porsche Carrera GTS; 2023 Porsche Carrera S; 2021 Porsche Cayman GT4; 2021 Porsche Cayman GTS; 2023 Porsche Edition 50 Year; 2020 Porsche Junior Seat; 2021 Porsche Junior Seat; 2022 Porsche Junior Seat; 2023 Porsche Junior Seat; 2024 Porsche Junior Seat; 2017 Porsche Redundant Boxster; 2020 Porsche Redundant Boxster; 2021 Porsche Redundant Boxster; 2022 Porsche Redundant Boxster; 2020 Porsche Redundant Cayenne E-Hybrid; 2021 Porsche Redundant Cayman; 2022 Porsche Redundant Cayman; 2023 Porsche Redundant Cayman GT4; 2022 Porsche Redundant Cayman GTS.
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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What owners reported
Source: NHTSA complaint databaseOwners of the 63 model years this bulletin names have filed 801 complaints with NHTSA since 2015. 95 of them name Power Train, Suspension — 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.
The contact owns a 2018 Porsche 718 Cayman. The contact stated that while the spouse was driving the vehicle at 70 MPH, abnormal handling occurred, followed immediately by a loud knocking noise. The driver pulled the vehicle to the side of the road and discovered the rear left axle had fractured, detached, and was hanging on the ground.
2018 Porsche Cayman · Power Train · filed with NHTSA Oct 16, 2026 · ODI 11771621
On September 23, 2023, in the late afternoon, the control arm of my Porsche 911 (front driver side) snapped while making a routine stop at a stop sign in a residential neighborhood, driving at approximately 25mph. There was smoke that came from the front driver side wheel as the control arm had snapped and that wheel was being dragged.
2022 Porsche 911 · Suspension · filed with NHTSA Jan 19, 2024 · ODI 11566408
I was driving the car and warning light “possible R gear fault-driving permitted” came on. While driving on a highway at 50 mph, gear shift started malfunctioning and oscillating between 2nd and 4th gears and I could not change the gears. I lost control of the car speed and it would drop to 25-30mph even if I stepped on the gas pedal.
2022 Porsche Macan · Power Train · filed with NHTSA Oct 25, 2024 · ODI 11622034
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 suspension
Source: same model, same component group20 other manufacturer communications filed against these Porsche models under the same component group (suspension), newest first. The eight newest are listed; the rest are on the Porsche list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| No. 64-26-1 | Service bulletin | Sep 29, 2026 | Technical Information for Yellow Warning Message "Rear Axle Steering Has Failed" in Instrument Cluster: Replace Servo Motors for Rear Axle S… |
| SPTL2608 | Service bulletin | Aug 17, 2026 | Special Tools and Equipment Information for alignment machines - Q2 2026 Software Spec Update Available |
| No. 57-26 | Service bulletin | Aug 17, 2026 | Symptom-based workshop manual for Clunking Noises from the Front Axle Area when Driving Over Uneven Surfaces |
| No. 64-26 | Service bulletin | Aug 10, 2026 | Technical Information for Yellow Warning Message "Rear Axle Steering Has Failed" in Instrument Cluster: Replace Servo Motors for Rear Axle S… |
| No. 63-26 | Service bulletin | Aug 6, 2026 | Symptom-based workshop manual for Creaking Noise from the Front End of the Vehicle. |
| WTF4 | Service campaign | Jul 6, 2026 | Replacement of Front or Rear Spring Damper |
| 2605 | Service bulletin | Jun 16, 2026 | E3PA, G3 Pressure Sensor for Leveling System - Implausible Signal |
| No. D781 | Service bulletin | Apr 18, 2026 | Parts information for parts withdrawal involving (992513031K) Shock absorber (spring cyl.). The vehicles affected are ones that use the part… |
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. D705 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. D705 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. D705 cover?
The manufacturer filed it against 102 model years: 2025 Porsche 718, 2024 Porsche 718, 2023 Porsche 718, 2022 Porsche 718, 2021 Porsche 718, 2020 Porsche 718 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.