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Service bulletin No. 09-21

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10222366
Published by NHTSA2022-10-04
Manufacturer's numberNo. 09-21
Manufacturer's date2022-09-02
NHTSA componentEQUIPMENT; SERVICE BRAKES, HYDRAULIC

NHTSA's summary

Technical information for workshop campaign WMA1 - check installation position of brake fluid return line and correct it if necessary.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Brakes, Equipment and accessories

Vehicles listed
PORSCHE PANAMERA 4 E-HYBRID2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4S E-HYBRID2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA E-HYBRID2022 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA TURBO S E-HYBRID2020, 2021 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20236622023-12-13. Accessories

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
No. D7522026-02-05. Service bulletin. Parts information for parts withdrawal involving the caliper without brake pads. The part numbers affected are in the attached PDF. The vehicles associated are cars that use the part numbers in the PDF.
No. 25302025-12-05. Service bulletin. Instructions on advanced technical information for Y1A, 971, 9YB, 9YA – Brake Noise & Long Brake Pedal
No. D7492025-12-05. Service bulletin. Parts information for parts withdrawal involving the brake disc 9Y0615301AJ
No. 31-252025-08-04. Service bulletin. Technical information for a complaint Maneuvering Assistant: Implausible Standstill When Reversing
D7192025-06-02. Service bulletin. Parts information for Parts Withdrawal - 1 Set of Brake Pads for Disk Brake. Vehicles included are all cars that use part number 992698451R
No. D6892024-08-06. Service bulletin. Parts information for parts withdrawal involving the brake hose 9J1611707F and 9J1611708F
No. D6842024-07-02. Service bulletin. Parts information for parts withdrawal involving the retainer for brake hose/brake line
No. D6812024-06-05. Service bulletin. Parts information for parts withdrawal involving the retainer for brake hose/pressure difference sender. (9J1611845C, 9J1611846C, PAB906051C)
No. 120-19-32024-05-03. Service bulletin. Symptom based workshop manual for a noise symptom - rattling noises from engine compartment. Checking balance shaft bracing wheel and replacing if necessary - G2
No. D6772024-05-02. Service bulletin. Parts information for parts withdrawal involving the brake pads - 992698151F