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Service bulletins for the 2018 Porsche Panamera

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.

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

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
122-G6X5S-042018-04-23. Service bulletin. ELECTRICAL SYSTEM. Subject: Control unit for high-voltage charger Information: Due to a software error, there is a possibility that the control unit for the high-voltage charger will not switch to energy-savingmode after the vehicle is stopped in the event of specific user behavior. This can result in an increased closed-circuit current load and can thus deplete the vehicle electrical system battery.
122-G2H3D-022018-02-12. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Concern: Incorrect Model Year (MY) coding in Gateway prevents programming Information: During software updates, it is possible for the Gateway to store an incorrect MY. If this happens, the vehicle will function as normal until the next attempt at Coding/Programming.
122-D5Y9E-022018-02-12. Service bulletin. ELECTRICAL SYSTEM. Customer Concern: There are reports of failed Porsche Car Connect (PCC) initializations. Technical Concern: Due to input handling in the VTS software, the Porsche Car Connect initialization fails. The ninth character in the VIN may be an ?X? (e.g. WP0AF2A7XHL123456). However, the system sees this ?X? character as invalid and does not transmit the installation code to the backend server. In this case, the initialization ends unsuccessfully. Additionally, the PCC portal does not register the failed attempt.
122-R3R8W-122017-12-14. Service bulletin. ELECTRICAL SYSTEM. Technical Concern: The technician confirms the customer's observation and also notes fault code P305400 stored in the DME.
122-L4R6B-122017-12-14. Service bulletin. ELECTRICAL SYSTEM. Technical Concern: Due to input handling in the VTS software, the Porsche Car Connect initialization fails. The ninth character in the VIN may be an "X" (e.g. WP0AF2A7XHL123456). However, the system sees this "X" character as invalid and does not transmit the installation code to the backend server. In this case, the initialization ends unsuccessfully. Additionally, the PCC portal does not register the failed attempt.
122-D2C2G-112017-12-14. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Technical Concern: This failure is the result of faulty message monitoring within the instrument cluster. Because the instrument cluster cannot properly detect and display the current cruise control status, the cruise control does not engage. Service Information: The recommended repair is to replace the instrument cluster. Only part numbers with suffix "G" or later should be used.
122-E5M8Q-112017-12-14. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Technical Concern: This failure is often accompanied by a long list of instrument cluster faults, including "C11011 - Control unit faulty, watchdog". All reported cases have been at PDI or with very low mileage. Service Information: The recommended repair is to replace the instrument cluster. Only part numbers with suffix "G" or later should be used.
122-Y8S5J-082017-10-25. Service bulletin. ELECTRICAL SYSTEM:WIRING. Subject: Wire harness for PASMvalve unit Information: The wire harness for the PASM valve unit is not routed correctly in the area around the heat protection panels for the valve unit on the affected vehicles. Due to relative movements while driving and if significant amounts of dirt get in, this can cause chafing on the wire harness and as a result, faults can be entered in the fault memory and the warning "Chassis system fault" may be displayed in the instrument cluster. As a result, the vehicle level can no longer be set.
122-V9W9U-092017-09-14. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; SEAT BELTS. Information: Due to a software error, there is a possibility that the enhanced seat belt diagnostic function may not detect the driver's correctly fastened seat belt on the affected vehicles. If this happens, the warning message "Driver seat belt not fastened, Fasten seat belt" will be displayed in the instrument cluster. Remedial Action: Re-program the airbag control unit using the PIWIS Tester with software version 35.650.010 (or higher) installed.

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