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Service bulletin SSM 47072

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10136593
Published by NHTSA2018-05-14
Manufacturer's numberSSM 47072
Manufacturer's date2018-02-13
NHTSA componentELECTRICAL SYSTEM:STARTER ASSEMBLY

NHTSA's summary

Some 2018 F-150, Expedition, and Navigator vehicles may exhibit an illuminated MIL with DTC P0521 stored in powertrain control module (PCM) usually after a crank, no-start event. Refer to Workshop Manual (WSM), Section 303-14 for normal diagnostics. If unable to determine root cause, do not attempt any repairs. Engineering is investigating, monitor OASIS for updates.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Starter

Trouble codes named

P0521

Vehicles listed
FORD F-1502018

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
SSM 511222022-10-11. Service bulletin. Some 2017-2022 F-250-F-550, 2015-2020 F-150 and 2018-2022 Expedition vehicles without push button start and passive entry may exhibit a condition where it is difficult to insert the ignition key and/or turn it to the accessory position when removing the ignition lock cylinder per the functional lock cylinder service procedure in Workshop Manual (WSM), Section 501-14. This may be due to debris or contamination in the ignition lock cylinder. If this concern occurs, use a suitable shop vacuum to dislodge or remove debris or contamination by placing the vacuum hose over the lock cylinder, without the key installed, for 30 seconds. Insert the ignition key and reattempt turning it to the accessory position for lock cylinder removal. If the key will not turn to the accessory position, continue with the non-functional lock cylinder removal procedure.
SSM 470972018-05-14. Service bulletin. Some 2017-2018 F-150 vehicles built on or before 29-Sep-2017 may exhibit a no crank/no start, auto-start-stop inoperative, illuminated malfunction indicator lamp (MIL) and or powertrain malfunction indicator lamp, transmission shift issues, DTC P061A, U0140, U0401, U0101, U0074 and/or U0037 being set in the PCM, TCM, IPC, FCIM, ABS and/or PSCM. This may be due to the 15525 transmission wire harness not being properly secured. Visually inspect the harness for possible damage and proper routing at the rear of the engine down to the transmission. Repair as necessary. If no damage is found, proceed with normal diagnostics.