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Service bulletins for the 2014 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.

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

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Bulletins, newest first
122-F3A8L-092018-01-29. Service bulletin. ELECTRICAL SYSTEM. This campaign includes steps where control unit(s) in the vehicle will be programmed with the PIWIS Tester. The vehicle voltage must be maintained between 13.5 volts and 14.5 volts during this programming. Failure to maintain this voltage could result in damaged control unit(s). Damage caused by inadequate voltage during programming is not a warrantable defect. The technician must verify the actual vehicle voltage in the PIWIS Tester before starting the campaign and also document the actual voltage on the repair order. Please refer to Equipment Information EQ1401 for a list of suitable battery chargers/power supplies which should be used to maintain vehicle voltage. Due to a software error in the gateway control unit, the optional lightweight battery (lithium-ion battery) - if installed in the vehicle - will not charge using the Porsche Charge-o-mat Pro charger when this is used via the cigarette lighter or 12-volt plug socket in the vehicle. As a result, the lightweight battery can go flat if the vehicle is parked up for a long time. The charging function works, however, if the charger is connected directly to the vehicle battery using the optional clamp adapter.
122-T7Y5Q-122017-12-14. Service bulletin. ELECTRICAL SYSTEM. Information: This document updates information previously published in EQ 1105, EQ 1105, and EQ 1401. To provide stable voltage and sufficient current throughout certain service operations, you should connect the vehicle to a battery charger (sometimes referred to as a power supply). However, you may experience ECU programming and coding issues if the chosen battery charger has insufficient power. Many workshop manuals currently advise use of a battery charger with a 40 or 70 A current rating. However, with the increasing current requirements of modern Porsche vehicles, we recommend a battery charger capable of producing a minimum current of 90 A.
122-S2Z5A-122017-12-14. Service bulletin. TIRES. Information: Summary tables with applicable notes on Ultra High Performance (UHP) tires for easy reference is supplied in this bulletin.
122-N9Z4L-072017-10-27. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Concerns: AGM starter battery (referred to below simply as 'battery') Situation: Support for the care andmaintenance of the AGMstarter battery (at the dealership): From the time the vehicle is delivered to the Porsche Centre until it is handed over to the customer, the battery must be maintained and charged regularly, depending on use.
122-R7W2C-072017-10-27. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Concerns: AGM starter battery (referred to below simply as ?battery?) Situation: Customer complaints concerning battery-related topics Recurring customer complaints concerning topics relating to battery capacity and quality.
122-E3L8H-032017-10-25. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. Cause: Noises can be caused by excessive relative movements between the individual components. Remedial Action: Rework sliding roof seal.
122-B5A3X-112017-10-15. Service bulletin. ELECTRICAL SYSTEM. On vehicles with low mileage, driven infrequently, or solely on short trips, the warning message "Oil pressure too low" can appear in the multi-function display when the engine is idling. Fuel and water in the oil can cause the control piston to swell. Remedial action involves carrying out the following test instructions during the PDI, or in the event of a customer complaint of the error message "Oil pressure too low" being displayed.
122-W4G8S-102017-10-15. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. Technical Concern: By design, the vehicle gateway allows certain vehicle features to time-out, in stages. This allows the vehicle to sleep. One feature that can time-out is the 12 V DC power point (cigarette lighter) in the center console area. One of the recommended methods of using the battery maintainer is to plug the battery maintainer into this power point. If this power point becomes disabled, it will not allow current flow from the battery maintainer to the vehicle, the vehicle battery will not trickle charge, and the battery maintainer will eventually shut off.
122-M2R2G-102017-10-15. Service bulletin. ENGINE. Concerns: Engine malfunction (Misfiring at high rpm) Situation: ? Diagnostic path for fault finding in the event of the complaint "Enginemalfunction" ? Required repairmeasures
122-M6Z7V-102017-10-15. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Information: Scopes not covered by this warranty extension Damage or malfunctions caused by external influences such as damage as a result of an accident, incorrect use or neglect of the vehicle. Restrictions on cover of the warranty extension The warranty and service information in the vehicle includes information about the warranty conditions for your vehicle. The owner should always read these warranty conditions carefully as the rights and obligations listed there also apply for the warranty extension.
122-U3Z5M-062017-09-14. Service bulletin. ENGINE AND ENGINE COOLING. Concerns: DME control unit Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. There is a possibility that the oil temperature sensor will be incorrectly diagnosed as faulty when the ignition is switched off and then back on again immediately on the affected vehicles due to the current diagnostic setup formonitoring the oil temperature sensor. As a result, the Check Engine light in the instrument cluster will be activated, although there is no fault present.
122-B4N2W-062017-09-14. Service bulletin. STRUCTURE:BODY:ROOF AND PILLARS; STRUCTURE:EMERGENCY:ESCAPE/EGRESS/EXIT. Concerns: Screw for Targa roof emergency operation on the hydraulic unit of the roof drive mechanism. Situation: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. There is a possibility that the screw for Targa roof emergency operation on the hydraulic unit of the roof drive mechanism on the affected vehicles may not have been tightened to the specified tightening torque during the production process. As a result, when the glass rear window is raised in order to top up engine oil, for example, the window may not be held in position, but may slowly drop forward in direction of travel, thereby restricting the available space.
122-H3A4J-062017-09-14. Service bulletin. LATCHES/LOCKS/LINKAGES:HOOD:LATCH. Concerns: Upper part of lock on front lid Information: This is to inform you of a Recall Campaign on the above-mentioned vehicles. Due to a temporary manufacturing error, there is a possibility that front lid lock upper parts, on which the catch bar was not riveted to themounting plate according to specifications, were installed on the affected vehicles. The durability of the upper part of the lock cannot be guaranteed over the service life of the affected vehicles and the risk of the lid opening unintentionally cannot be ruled out.
122-D6Q9P-062017-09-14. Service bulletin. EQUIPMENT:MECHANICAL; ENGINE. Concerns: Rubber sleeve between pressure pipe and throttle housing Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. There is a possibility that the clamp for the rubber sleeve was not tightened to a sufficiently high tightening torque on the pressure pipe and as a result, the rubber sleeve can slip off the pressure pipe on the affected vehicles. If this happens, full performance will no longer be guaranteed.
122-S4H7K-062017-09-14. Service bulletin. EQUIPMENT:ELECTRICAL; ENGINE. Concerns: DME control unit Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. Noises ("rattling") can come from the engines in the affected vehicles at idle speed under certain conditions.
122-G7H3U-062017-09-14. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Concerns: Instrument cluster Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. The following fault symptoms can occur on the affected vehicles due to a software error in the instrument cluster: * Failure of the display on the multi-function display: The display on the multi-function display in the instrument cluster can stop working at times under certain conditions. The display starts working again after a certain time. * Implausible service reminder indicator display: The driver is informed that a service (maintenance, intermediate maintenance or oil service) is due although the mileage and date for a required service have not yet been reached.
122-Y9X5V-062017-09-14. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL. Concerns: Control unit for Porsche Dynamic Chassis Control (PDCC) Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. Due to a software error in the control unit for Porsche Dynamic Chassis Control (PDCC), there is a possibility that an unauthorized fault code will be stored in the control unit under certain ambient conditions. This can cause the error message "PDCC failure" to be displayed in the instrument cluster and the PDCC function will no longer be available.
122-Q8R2Q-062017-09-14. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY; EQUIPMENT ADAPTIVE/MOBILITY. Concerns: Convertible top control unit Information: This is to inform you of a voluntary Stop Sale Campaign on the above-mentioned vehicles. A new data record for the convertible top control unit is available for the affected vehicles. Activation of the hydraulic cylinders for opening and closing the convertible top is improved with this data record.
122-N5B2J-062017-09-14. Service bulletin. ELECTRICAL SYSTEM. Concerns: Rear-end electronics control unit Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. A new data record for the rear-end electronics control unit has been used during series production. By modifying the way in which the front spoiler is activated in Performance position, the aerodynamic behaviour of the vehicle is further improved when the convertible top is open.
122-Q2E5G-062017-09-14. Service bulletin. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP. Concerns: Switching element for filler flap Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. Defective switching elements for the filler flap may have been installed on the affected vehicles due to a supplier error. This can cause the switching element to become mechanically blocked. If this happens, there is no guarantee that the filler flap will open correctly.
122-W6M7A-062017-09-14. Service bulletin. STRUCTURE:BODY; WHEELS. Concerns: Front wheel housing liner (front part) Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. When reversing out of the bed of gravel with hot tires during race track driving, small stones that are sticking to the front tires can become loose. These stones are flung against the radiators through an opening in the front part of the wheel housing liners and can damage the radiators.
122-F5K9C-062017-09-14. Service bulletin. ENGINE; EQUIPMENT:ELECTRICAL. Concerns: DME control unit Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. A new data record is available for the DME control unit. This data record improves the engine running quality at idle speed in order to prevent possible engine speed fluctuations and customer complaints. The improved idling quality only affects engine operating comfort.
122-K8Q9H-062017-09-14. Service bulletin. TIRES; WHEELS. Concerns: 20-inch Sport Classic wheel (I-no. XRU) Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. The opening for the wheel hub cover on the 20-inch Sport Classic wheel (I-no. XRU) was not machined correctly due to an error during the production process. As a result, there is no guarantee that the wheel can be balanced correctly when changing the tire, depending on the wheel balancing machine used. This can result in noticeable vibrations and reduced driving comfort.
122-N7A9G-062017-09-14. Service bulletin. STRUCTURE:BODY:DOOR. Concerns: Cover for door arrester Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. There is a possibility that covers for the door arresters that do not conform to the high quality standards of Porsche AGmay have been installed on the affected vehicles.
122-M6M5Z-062017-09-14. Service bulletin. ELECTRICAL SYSTEM:HORN. Concerns: Horn (also referred to as fanfare) Information: Modified assignment of connector contacts due to installation of new type of horn. As a result, if the horn needs to be replaced, an adapter cable must also be installed.

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