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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.

By type

By component

By trouble code

Bulletins, newest first
122-M7G3R-052018-05-21. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Information: The 48-volt system on the affected vehicles can fail when the ignition is switched on due to incorrect initialization. As a result, the electronic anti-roll stabilization system (eAWS) of Porsche Dynamic Chassis Control (PDCC) will no longer be available until the next time the ignition is switched off and on again and the warning message "Chassis system fault - Adapted driving permitted" will be displayed in the menu on the instrument cluster. Remedial Action: Re-program control unit for 48-volt additional battery.
122-D9R9E-042018-04-23. Service bulletin. EQUIPMENT. This Technical Information is intended as a supplement to the existing information in the event of complaints about data processing or data transfer between the Porsche Diagnostic Key and reader. The list provided here is sorted according to possible faults and is not a complete list. The Porsche Diagnostic Key functions are used for the first time with the Porsche Panamera (971). Remote vehicle key/hand-held transmitters from other Porsche models or earlier model years cannot be read out.
122-W3K7N-042018-04-23. Service bulletin. VISIBILITY. Subject: Wiper arm on rear wiper Situation: There is a possibility that the affected vehicles were fitted with a rear wiper on which there is a crack on the cone of the wiper arm due to amanufacturing error. This can cause the cone to break, thereby breaking the connection between the wiper arm and rear wiper motor and interrupting the power supply required to drive the rear wiper.
122-L6U2W-042018-04-23. Service bulletin. ELECTRICAL SYSTEM. Subject: Plug socket (230 V/100 V/110 V) Symptom: AC plug socket (230 V/100 V/110 V) does not work. Cause: The bit for "Plug socket switch-off" may be set unnecessarily in the gateway control unit.
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-B6P3D-032018-03-13. 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.
122-A6Z3V-032018-03-13. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). Subject: Intake valves and intake ports Information: Carboned-up valves in the engine can be reworked and cleaned using cleaning equipment. If there is a complaint about knocking combustion, e.g. during acceleration at high load, the condition of the intake valves and portsmust be checked before doing any other work. If the check shows that the intake valves and intake ports have carbon deposits and are dirty, they must be cleaned using the VAS 294 011 - cleaning unit. There should be no need to replace the components. Date of Introduction: The VAS 294 011 - cleaning unit can be ordered immediately for dealers. Remedial Action: The VAS 294 011 - cleaning unit is used for cleaning carboned-up intake valves and intake ports. Compressed air is used to spray a special granulatemixture into the intake port,where it loosens and removes carbon build-up. The dirty granulate is extracted during spraying using an industrial vacuum cleaner.
122-A7E7V-032018-03-13. Service bulletin. EQUIPMENT. Customer Concern: The remote key battery is dead before its expected end of life. Technical Concern: The technician confirms this behavior. Service Information: For vehicles built before 8/19/2017, the key itself is defective and the battery likely performs as expected. In this case, replace the key.
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-H3T9C-022018-02-12. Service bulletin. POWER TRAIN. Concern: Abrupt, ?Harsh? Gear Shift Changes, particularly in first and second gears Information: Rough gear changes with unmatched engine and transmission revs can be attributed to an unadapted PDK. Transmission performance issues characterized by unmatched, abrupt shifts, particularly in first and second gears may require a driving adaption. Prior to the adaption drive, update PDK Software using the latest PT3G Version and perform a calibration. Successful calibration of the PDK is a prerequisite for the adaption drive.
122-Y3W6C-022018-02-12. Service bulletin. EQUIPMENT; STRUCTURE. Subject: Gap between rear spoiler and roof Information: There is a possibility that the gap dimension fromthe rear spoiler to the roof does not comply with specifications on the affected vehicles. Customers may regard this as a visual defect.
122-B4P8W-012018-01-29. Service bulletin. ENGINE. Subject: Fastening screw for engine ground cable on front right longitudinalmember Concern: There is a possibility that the fastening screw for the engine ground cable on the front right longitudinalmember may not have been tightened sufficiently.
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-E7X5D-122017-12-14. Service bulletin. SUSPENSION. Subject: Control unit for Porsche Active SuspensionManagement (PASM) Information: On vehicles with air suspension, the vehicle level can be lowered after the vehicle has been idle for a long time. At temperatures below 5° F (-15° C), this can result in the front axle being lowered to the low level.
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-W6Z8L-082017-10-25. Service bulletin. ENGINE. Concern: Abrupt, ?Harsh? Gear Shift Changes, particularly in first and second gears Information: Rough gear changes with unmatched engine and transmission revs can be attributed to an unadapted PDK.
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-H7B7W-092017-09-14. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Information: Very small leaks may not be found on a normal inspection. Extra effort to locate these leaks is required.
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.
122-N5Q5H-092017-09-14. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. Information: An unfavorably positioned drain bore in the front right power windows mechanism can prevent moisture that penetrates via the window channel frombeing drained completely. If this moisture freezes at low outside temperatures, the mechanism can be damaged when the front right power window is actuated. As a result, the front right side window will no longer close. Remedial Action: Replace front right power windows mechanism.

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