WenmarOpen by Wenmar Pro

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.

By type

By component

By trouble code

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
122-Y5B4K-012020-01-03. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY. Additional information for repairing the cylinder head cover near the injector holes if there are leaks.
122-G2B4B-112019-11-01. Service bulletin. ENGINE AND ENGINE COOLING. List of approved A40 engine oils for Porsche vehicles.
122-A8X6X-102019-10-31. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE AND ENGINE COOLING. Porsche intranet posting for WKA2 campaign, which seeks to replace the exhaust system holders on affected vehicles.
122-D2B8P-102019-10-15. Service bulletin. ENGINE AND ENGINE COOLING. Instructions for what course of action to take if the customer should complain about oil leaks from the transfer case
122-B9P6V-092019-09-23. Service bulletin. ENGINE AND ENGINE COOLING. Instructions for installing a modified coolant pipe at the front of the cylinder head in the event of a customer complaint about leaking. This bulletin is specific to the Cayenne E-Hybrid models.
122-D4F2Y-092019-09-23. Service bulletin. ENGINE AND ENGINE COOLING. Instructions for installing a modified coolant pipe at the front of the cylinder head in the event of a customer complaint about leaking
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-W5C2W-082019-08-12. Service bulletin. ENGINE; EQUIPMENT ADAPTIVE/MOBILITY. Information about possible engine knocking and how to clean carbon deposits is they are dirty and causing knocking.
122-X2X7N-072019-07-08. Service bulletin. ENGINE AND ENGINE COOLING. Notice to dealers that coolants will be moved out of the special tool cabinet in the dealer service department in order to make room for new special tools. All coolant tools will be moved to the "Coolant Cart" because they need to be housed in the same place.
122-K8J3T-042019-04-08. Service bulletin. ENGINE AND ENGINE COOLING. There is cast residue in the cylinder head cover sealing groove, causing the injector holes to leak.
122-R8P3T-012019-02-25. Service bulletin. ENGINE. Oil Leakage from Cylinder Head of 3.0 and 2.9-Liter V6 Engines
122-R9H5B-072018-08-06. Service bulletin. ENGINE; EQUIPMENT ADAPTIVE/MOBILITY. Concerns: Belt tensioner Information: Checking belt tensioner in the event of a complaint about "leaks" before carrying out any other work.
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-R9H5B-072018-07-30. Service bulletin. ENGINE. Concerns: Belt tensioner Information: Checking belt tensioner in the event of a complaint about "leaks" before carrying out any other work.
122-K8M7U-052018-05-21. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; EQUIPMENT. Subject: Cayenne S (9YA) As of 2018 Front exhaust pipes Symptom: Buzzing/vibrating noises in the exhaust system area at an engine speed of approx. 1,100 rpm during deceleration. Cause: The exhaust system can expand in an unfavorable direction and become strained at operating temperature. Remedial Action: Loosen clamps on the exhaust system, bring the exhaust system to operating temperature and re-position the clamps.
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.

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