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Service bulletins for the 2018 Lincoln MKZ

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.

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

By type

By component

By trouble code

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

Bulletins, newest first
SSM 477652019-03-04. Service bulletin. FUEL SYSTEM, GASOLINE. Some 2013-2018 C-MAX, 2013-2019 Fusion Energi, and 2017-2019 Fusion/MKZ Hybrid vehicles may exhibit an illuminated MIL with diagnostic trouble code (DTC) P04B5. This may be due to inadvertent actuation of the fuel door release button by the customer when exiting the vehicle. If the fuel filler door is not fully closed after a refueling event or the fuel filler door is open from erroneously pressing the fuel door release button, a message displays during the third drive cycle to indicate the fuel filler door is not closed and the DTC sets. Before performing Workshop Manual (WSM) diagnosis, consult the customer about the potential for accidental fuel door actuation and explain the need to fully latch the fuel door after every refueling event. Malfunction Indicator Lamp will turn off after (3) drive cycles with fuel filler door closed.
SSM 477372019-03-04. Service bulletin. FUEL SYSTEM, GASOLINE; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ELECTRICAL SYSTEM. Some 2017-2019 MKZ vehicles equipped with a 2.0 HEV engine may exhibit a fuel filler door unable to be opened or closed with or without an illuminated malfunction indicator (MIL) and DTC P04B5. This may occur when the fuel door is pressed or obstructed while the fuel door release latch is operating. If the fuel filler door is unable to be closed, a message displays during the third drive cycle and the DTC P04B5 will set. Before performing Workshop Manual (WSM) diagnosis, reset the system by pressing the fuel filler door release switch and wait 12 seconds for reset. The fuel door release latch should be heard when the motor is in motion. Review fuel filler door for locking tab operation. If the fuel filler door is operating properly, it should not be replaced. Advise the customer about the correct operation of the fuel filler door.
SSM 470902018-05-14. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES; FUEL SYSTEM, GASOLINE:STORAGE. Some 2017-2018 Energi and Hybrid vehicles may exhibit a fuel door opening delay longer than 15 sec or unable to open condition without refueling system or fuel door related DTCs. This condition may be due to the high pressure fuel tank pressure transducer (HPFTPT) functionality. Check the HPFTPT after opening the fuel door by releasing the mechanical lever located in the trunk. Install supplemental refueling adaptor in the vehicle to open the capless fuel tank filler pipe. During key on engine off (KOEO) condition check if the fuel tank pressure transducer (FTPT) voltage is between 1.4 1.54 V at atmospheric pressure in the tank. If the voltage is within the range, FTPT is functioning as intended. Check the fuel vapor vent valve (FVVV), also called refueling valve, integrity by following Workshop Manual (WSM), Section 310-00.

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