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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.

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By component

By trouble code

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

Bulletins, newest first
122-Z6Y7L-092019-09-23. Service bulletin. ELECTRICAL SYSTEM. Bulletin outlining PIWIS Tester updates 38.600.030 & 035.
122-E4R8U-092019-09-23. Service bulletin. ELECTRICAL SYSTEM. Bulletin outlining PIWIS Tester updates 38.600.020.
122-B3Y6H-092019-09-23. Service bulletin. ELECTRICAL SYSTEM. Bulletin outlining PIWIS Tester updates 38.600.000, .010, & .015.
122-K2U8K-092019-09-23. Service bulletin. ELECTRICAL SYSTEM. Instructions for reprogramming the High Voltage Control Unit on Cayenne S E-Hybrid models in the event of a red or yellow hybrid warning message.
122-C3T2Z-082019-08-12. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. Information about possible fault codes being displayed after vehicle has not been driven for an extended period of time, and instructions on how to clear the faults.
122-L6P5E-072019-07-08. Service bulletin. ELECTRICAL SYSTEM. Request for dealers to remove Special Tool VAS 6839 from High Voltage tool box because the unit could give erroneous voltage readings. PAG has decided that VAS 6558A could be used in its place.
122-U8T8P-032019-03-25. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Complaint - Battery Low and YellowWarning Message "Battery low _ Service necessary"
122-J9R5B-012019-02-25. Service bulletin. BACK OVER PREVENTION; ELECTRICAL SYSTEM. Symptom: The front "Real Top View" camera display in the PCM is milky/cloudy although the camera lens is clean and dry.
122-F9S5J-092018-11-19. Service bulletin. ELECTRICAL SYSTEM. Cause The control unit for the auxiliary alarm system has limited bus communication. Date of Introduction Control units for the auxiliary alarm system with updated software have been used in production since the beginning of December 2017.
122-R7X8Y-092018-11-19. Service bulletin. ELECTRICAL SYSTEM. Customer Concern Customer complains of vehicle stalling and/or Check Engine Light illuminated (DME fault code ?P032200 Engine speed sender - no signal? or ?P032100 - Engine speed sensor, implausible signal? may be stored). Technical Background The crankshaft position sensor can have an intermittent internal electrical connection. It is from a bad batch produced at the supplier in April 2017. Vehicles built in late 2017 model year and very early 2018 model year may have one of these sensors.
122-M4Q2P-092018-11-19. Service bulletin. ELECTRICAL SYSTEM. In the event of a complaint about low battery voltage in the vehicle electrical system and/or if the vehicle cannot be started or unlocked, the following instructionsmust be followed before doing any other work. Read out the hardware version fromthe instrument cluster and life cycle data from the gateway as described below (under 'Conditions'): ? If the hardware version that is read out = "011" and the life cycle data value is "20" at least once, ? aVehicle Analysis Log (VAL) must be created and attached to the PQIS claim and ? the work described under 'Action required' must be carried out.
122-N8X6K-102018-10-15. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. Complaint - PCM 5.0 Integrated System: Repair instructions (132/18)
122-B9L7S-072018-08-06. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. Subject: Control unit for rear-end electronics Symptom: The alarm system is triggered spontaneously (for no apparent reason). Cause: The mobile phone antenna (GSM) signals can be picked up by the interior surveillance system and result in spontaneous triggering of the alarm system.
122-P5G7U-072018-08-06. Service bulletin. ELECTRICAL SYSTEM:WIRING; ENGINE. Oil in the wiring harness. 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-B9L7S-072018-07-30. Service bulletin. ELECTRICAL SYSTEM. Subject: Control unit for rear-end electronics Symptom: The alarm system is triggered spontaneously (for no apparent reason). Cause: The mobile phone antenna (GSM) signals can be picked up by the interior surveillance system and result in spontaneous triggering of the alarm system.
122-F4U4P-042018-04-23. Service bulletin. ELECTRICAL SYSTEM. Model Line: Cayenne (92A) Macan (95B) 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.

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