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Service bulletins for the 1999 Porsche 911

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.

176 on file from NHTSA, as of 2026-10-19.

By type

By component

Bulletins, newest first
No. 24042024-04-03. Service bulletin. POWER TRAIN; EQUIPMENT. Special tools and equipment information for the Boxster, Cayman, 911, and Panamera
No. 24032024-04-03. Service bulletin. SERVICE BRAKES, HYDRAULIC. Special tools and equipment information for brake caliper pins for the 911, Boxster, and Cayman
PIWIS2401j2024-03-04. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM:SOFTWARE. Information for PIWIS tester update 42.500.020
No. D82024-03-04. Service bulletin. UNKNOWN OR OTHER. Product knowledge for the chassis and VIN numbering systems
PIWIS2401f2024-03-04. Service bulletin. UNKNOWN OR OTHER. Information for PIWIS tester update 42.500.008
PIWIS2401e2024-02-08. Service bulletin. UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE. Information on PIWIS tester update 42.500.005
PIWIS2302s2023-12-08. Service bulletin. EQUIPMENT. Information for PIWIS tester update 42.300.050 & .052
No. 35-232023-12-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Instructions on manufactures certificate for approved Porsche A40 engine oils
No. 33-232023-12-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Instructions on manufactures certificate for approved Porsche C30 engine oils
No. 32-232023-12-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Instructions on manufacturers certificate for approved C20 engine oils
PIWIS2302r2023-12-07. Service bulletin. EQUIPMENT. Information for PIWIS tester update 42.300.040 & .041
PIWIS2302q2023-12-07. Service bulletin. EQUIPMENT. Information for PIWIS tester update 42.300.035
PIWIS2302p2023-12-07. Service bulletin. EQUIPMENT. Information for PIWIS tester update 42.300.030 - .032
No. D6542023-12-07. Service bulletin. EQUIPMENT. Parts information for parts withdrawal involving the glass roof - 9J0877069EY and 9J0877069DY
PIWIS2302h2023-11-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Special tools and equipment information on PIWIS tester update 42.250.050
PIWIS2302g2023-10-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Information on PIWIS tester update 42.250.045
PIWIS2302f2023-10-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Information on PIWIS tester update 42.250.042
PIWIS2302e2023-10-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Information PIWIS tester update 42.250.040
PIWIS2302d2023-10-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Information on PIWIS tester update 42.250.032
PIWIS2302C2023-10-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Information on PIWIS tester update 42.250.030
PIWIS2302b2023-10-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Information on PIWIS tester update 42.200.025
PIWIS2302a2023-10-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Information on PIWIS tester update 42.200.020 & .022
No. 23142023-10-05. Service bulletin. ELECTRICAL SYSTEM. Special tools and equipment information for all Porsche models. Diagnostic equipment standards.
No. 19-232023-10-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. Manufacturers certificate for an overview of approved Porsche A40 engine oils.
No. 18-232023-10-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. Manufacturers certificate for an overview of approved Porsche C40 engine oils.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.