Service bulletins for the 2018 Porsche Cayenne
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.
718 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Automatic transmission are shown. Show all
| WMD1 | 2021-06-03. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Porsche intranet posting with preliminary information for Porsche workshop campaign WMD1 Workshop Campaign -PCM Software Update. |
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| No. 173-20 | 2020-12-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); EQUIPMENT. Instructions for fixing the navigation in the PCM in the event that it is loading slowly. |
| No. 2020 | 2020-10-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Information on new special tool for offline updates of the PCM Versions 4 and 5. |
| 122-B6P3D-03 | 2018-03-13. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. Symptom: Hard or jerky gear changes. Cause: This is caused by the transition phase when changing from the engaged gear to the target gear. Various components of the powertrain affect the shifting quality. Remedial Action: In the event of a customer complaint, use PIWIS Tester III with software 36.400.020 (or higher) installed to: ? re-program and code the Tiptronic control unit via "Automatic programming" and ? reset the adaptation values. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.