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Service bulletins for the 2014 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.

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

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Bulletins, newest first
122-T9Z8L-122017-10-25. Service bulletin. ENGINE. The following procedure is recommended to ensure that the engine oil level is correct. By following this procedure, the engine oil level display will be displayed as completely full. If the engine oil is filled beyond this level, the warning for ?Above Max? may be displayed intermittently under certain operating conditions.
122-P6P7K-102017-10-15. Service bulletin. EQUIPMENT. Converting transfer cases that are still in stock to the new type before installing themin customer vehicles. The optimized transfer case is used during production from week 31/2016. If the transfer case needs to be replaced, check the part number of the new transfer case. If the transfer case is the old type, it must be converted to the new type before doing any other work. Conversion to the new type involves: ? Fitting a new protective ring on the front output drive (sometimes also referred to as "dust boot"), ? Fitting a new vent connection (breather adapter) ? Retrofitting a vent line in the vehicle.
122-Q3V5G-102017-10-15. Service bulletin. ELECTRICAL SYSTEM. Cause: Clicking noises can come from around the transfer case when manoeuvring the vehicle (or driving slowly) due to activation of the transfer case servo motor. Remedial Action: Before doing any other work, the symptommust be simulated using a test procedure. (Opening the door windows can be helpful when evaluating noises). 1 Conditions for the first test procedure: ? Activate the Start/Stop function and ? deactivate all sources of noise in the vehicle (Entertainment, ventilation, etc.). ? A multi-story parking garage can be useful for acoustic reverberation. ? Onastraight stretch ? fromspeeds less than 10mph (20 km/h) ? brake the vehicle to a standstill. ? The best way of finding the clicking noise is by driving slowly and then stopping the vehicle.
122-G8Z4D-102017-10-15. Service bulletin. EXTERIOR LIGHTING:BRAKE LIGHTS:SWITCH. Information: A Cayenne with optional equipment no. 1D6 will come with a Trailer hitch receiver and wiring up to the receiver hitch that includes a control unit to operate the trailer parking lights, turn signals and brake lights. The Cayenne is also pre-wired for a brake controller. You will need to do the following to hook up the trailer electrics and/or an electric brake controller:
122-E3D6M-122017-10-15. Service bulletin. ELECTRICAL SYSTEM. Due to incorrect sealing of the electric plug connection on the transfer case servo motor, moisture can get into the connector. As a result, the contacts can become corroded. In the event of a customer complaint, check the plug connection on the servo motor and the servo motor itself for damage: ? If the electric plug connection on the transfer case servo motor is corroded, replace section of cable including electric plug connection using a repair kit. ? If the servo motor is damaged, replace section of cable including electric plug connection and transfer case servo motor.
122-T9Z8L-122017-10-15. Service bulletin. ENGINE. The following procedure is recommended to ensure that the engine oil level is correct. By following this procedure, the engine oil level display will be displayed as completely full. If the engine oil is filled beyond this level, the warning for ?Above Max? may be displayed intermittently under certain operating conditions.
122-A4N7P-092017-09-14. Service bulletin. TRAILER HITCHES; ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL. Information: A Cayenne with optional equipment no. 1D6 will come with a Trailer hitch receiver and wiring up to the receiver hitch that includes a control unit to operate the trailer parking lights, turn signals and brake lights. The Cayenne is also pre-wired for a brake controller. You will need to do the following to hook up the trailer electrics and/or an electric brake controller:
122-U5S5J-092017-09-14. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Information: During the packaging of a High Voltage Lithium Ion battery, copies of The test log for classification of lithium-ion high voltage batteries (located in PIWIS - Standard Forms) must be attached inside the box and to the document bag on the exterior of the box as per the Workshop Manual 2X00IN Packing non-critical high-voltage battery (970, 971, 92A) or Workshop Manual 2708IN Packaging instructions for high-voltage battery (918)
122-X3H2P-062017-09-14. Service bulletin. ENGINE. Concerns: Cylinder head Information: This is to inform you of a Stop Sale Campaign on the above-mentioned vehicles. Routine tests carried out previously have shown that the cylinder head on the engines on the affected vehicles do not meet the required specifications and there is a possibility that the long-term durability required by Porsche will not be met.
122-A2B6J-062017-09-14. Service bulletin. EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES. Concerns: Sensor for interior surveillance in the roof console Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. A sensor for the interior surveillance system in the roof console that does not meet the required specifications may have been installed on the affected vehicles. This can cause increased triggering sensitivity under certain conditions, resulting in the triggering of implausible alarms.
122-K2P3H-062017-09-14. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:COOLING SYSTEM. Concerns: Spring band clamp on coolant reservoir Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. There is a possibility that two spring band clamps with too large a diameter were installed on a breather hose for the engine cooling system reservoir. The inadequate pre-tension force of the spring band clamps can result in a small amount of coolant leaking out when the vehicle is driven.
122-G7N4L-052017-09-14. Service bulletin. ELECTRICAL SYSTEM. Concerns: Power supply relays Information: There is a possibility that relays froma batch whose switching contact was not manufactured according to specifications were installed on the affected vehicles. As a result, the switching contact in the relay can stick in normal position and the relevant electrical equipment will not therefore be supplied with current. Depending on where the relay is used in the vehicle, this can cause various systems, e.g. rear window heating or the levelling system, to stop working.
122-E7Q7N-052017-09-14. Service bulletin. ENGINE AND ENGINE COOLING. Concerns: Oil guide housing Information: Oil leak ("sweating", drops of oil) on engine in oil guide housing area We have discovered that the cause of some leaks in the specified area could not be detected and determined definitively in the dealer organisation when attempting to resolve the complaint "Oil leak"1 . As a result, some of the measures that were carried out were not always effective.
122-U5E8V-062017-08-01. Service bulletin. POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT. Concerns: Rear-differential lock control unit Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. With the current data record for regulating the rear-differential lock, noises ("rattling") can occur in the rear axle area as a result of a certain driving style over the service life of the vehicle. This will not impair the function of the rear-differential lock.
122-E2Z6Z-062017-07-28. Service bulletin. FUEL SYSTEM, GASOLINE:DELIVERY. Concerns: Fuel level sender Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. There is a possibility that the fuel level senders on the affected vehiclesmay not have been calibrated correctly during the production process. As a result, the fuel level displayed in the instrument cluster might be higher than the actual fuel level.
122-Q5C4S-062017-07-28. Service bulletin. ENGINE; ELECTRICAL SYSTEM:WIRING. Issue: Oil in the wiring harness. Information: If oil is found in the engine wiring harness during a repair, the wiring harness and all the affected components (including the oil pump control valve) must be replaced.
122-J8L6N-092016-10-03. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. ENABLING ONLINE SERVICES
25/162016-07-07. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES. AG02 Stop Sale Campaign/Recall Campaign - Checking Circlip on Bearing Bracket for Pedals Internal tests have shown that a circlip on the bearing bracket for the pedals may have become detached from its locking position as a result of preassembly processes carried out by a supplier. In this case, the bearing pin for the pedals will no longer be secured axially in the bearing bracket and can come out of one of the two bearings over the service life. If the bearing pin is mounted on one side only, brake pedal actuation will be impaired.
SB-1504-27602016-06-22. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
SB-15022016-03-17. Service bulletin. EQUIPMENT. PORSCHE CAYENNE (92A) BULLETIN ON REPLACING COWL DRAIN. IF COWL CAGE WILL NOT FASTEN PROPERLY TO THE BODY REPLACE IT. *CN
TIS-60-142015-08-15. Service bulletin. ENGINE. PORSCHE: THE CYLINDER HEAD ON SOME ENGINES FAILS TO MEET SPECIFICATIONS REQUIREMENT AND THE LONG TERM DURABILITY FOR VEHICLES MANUFACTURER. MODEL 2014 CAYENNE. *PE

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