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Service bulletin SSM 46997

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 id10138513
Published by NHTSA2018-05-29
Manufacturer's numberSSM 46997
Manufacturer's date2018-01-05
NHTSA componentSTEERING

NHTSA's summary

Some 2018 Mustang vehicles may exhibit a customer complaint of lack of on center feel or overall power steering feel performance. A new power steering control module (PSCM) calibration has been released. Reprogram the PSCM to the latest calibration using Integrated Diagnostic System (IDS) release 108.02 or higher. Make sure you are connected to the internet when entering module programming to obtain the latest updates. Calibration files may also be obtained at www.motorcraftservice.com. For claiming, use causal part 3504 and applicable labor operations in section 10 of the service labor time standards (SLTS) manual.

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

Steering

Vehicles listed
FORD MUSTANG2018

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
SB23-012023-08-03. Service bulletin. Spl Parts, Inc. communications index accompanying MCP uploads 23mc40464 & 23mc40471
SB 23-012023-08-02. Service bulletin. SPL Parts, Inc. manufacturers and distributes aftermarket lower control arms for dedicated competition vehicles and "track day" cars some of which may be used on both track and highway. SB 23-01 adresses proper installation torque of cap bolt fasteners attaching SPL's aftermarket lower control arms, recurring inspection and confirmation of torque setting and removal and replacement of damaged or under torqued fasteners to reduce risk of premature failure and accident. SB-23-01 was mailed, emailed and posted on SPL website to known resellers, race teams and users of the affected parts and is being submitted here as required by part 579.5. Vehicle Applications include: BMW series 1,2,3,& 4, 2008-2023; Chevrolet Camaro 26-2023, Cadillac ATS, CTS 2016-2019; Ford Mustang 2015-2023; Toyota Supra 2020-2023.
SSM 513122023-02-02. Service bulletin. During replacement of the electronic power assist system (EPAS) steering gear assembly on 2015-2023 Mustang vehicles, removal and replacement of the inner tie rods and bellows boots is required. To assist engineering with root cause analysis of failed steering gears, include these parts in the same package when returning warranty replacement steering gears. Make sure to avoid damage to the bellows boots or inner tie rods during removal. The steering gear should also be packaged in the original box with all protective insulators in place to properly protect it during shipping.
SSM 506722022-04-13. Service bulletin. Some 2018-2022 Mustang vehicles (Non-Shelby) and built at Flat Rock Assembly may experience a clunk/pop type noise when turning the steering wheel. This may be due to an incorrectly installed upper spring seat which is part of the front strut assembly. To correct this condition, remove the suspect strut(s) from the vehicle and inspect the upper spring seat for damage and/or incorrect installation and repair as necessary. Refer to Workshop Manual, Section 204-01. For claiming, use casual part 18124 and the applicable labor operations of Section 03 of the Service Labor Time Standards (SLTS) Manual.
SSM 474892018-09-24. Service bulletin. When connecting the Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) or Ford Diagnosis and Repair System (FDRS) to the DLC located on the driver side under the steering column at the GWM, make sure that the ignition is off before connecting the VCM. If the ignition is on or the engine is running during the connection, it can result in various warning lights being illuminated with diagnostic trouble codes (DTCs), no start, no crank conditions or the IPC inoperative. If a vehicle displays these issues, disconnect the equipment from the DLC and disconnect the vehicle battery. Wait 10 minutes and reinstall with the ignition off. Clear any DTCs present and retest.
SSM 469972018-06-11. Service bulletin. Some 2018 Mustang vehicles may exhibit a customer complaint of lack of on center feel or overall power steering feel performance. A new power steering control module (PSCM) calibration has been released. Reprogram the PSCM to the latest calibration using Integrated Diagnostic System (IDS) release 108.02 or higher. Make sure you are connected to the internet when entering module programming to obtain the latest updates. Calibration files may also be obtained at www.motorcraftservice.com. For claiming, use causal part 3504 and applicable labor operations in section 10 of the service labor time standards (SLTS) manual.