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Service bulletin No. 109-21-1

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 id10235368
Published by NHTSA2023-05-03
Manufacturer's numberNo. 109-21-1
Manufacturer's date2023-04-03
NHTSA componentSUSPENSION

NHTSA's summary

Symptom based workshop manual involving a clicking noise from the area of the front axle - observe specified procedure

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

Suspension

Vehicles listed
PORSCHE 9112014

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

Other bulletins for the same vehicles and component
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SPTL26082026-09-04. Service bulletin. Special Tools and Equipment Information for alignment machines - Q2 2026 Software Spec Update Available
No. D7812026-05-07. Service bulletin. Parts information for parts withdrawal involving (992513031K) Shock absorber (spring cyl.). The vehicles affected are ones that use the part number mentioned.
No. D7572026-03-02. Service bulletin. Parts information for parts withdrawal involving the retaining spring. The vehicles affected are cars that use part number 95C615269E
D7072025-03-05. Service bulletin. Parts Information - Parts Withdrawal - Shock Absorbers (99133305324)
No. D705.12025-01-07. Service bulletin. Parts 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
No. D7052025-01-07. Service bulletin. Parts 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
No. D6862024-07-03. Service bulletin. Parts information for parts withdrawal involving the air spring
No. 89-112022-04-05. Service bulletin. Technical information - adjust values for suspension alignment: using current values and observing specifcations.
No. 109-212022-01-05. Service bulletin. Symptom-based workshop manual: noise symptom, clicking sound from around the front axle. Observe specified procedure.