SSM 49355

Service Bulletin Details

Public Details for: SSM 49355

Some 2015-2020 f-150 and 2018-2020 expedition/navigator vehicles equipped with a 3.5l/2.7l ecoboost engine and four-wheel drive (4wd) may exhibit an intermittent grinding type noise while driving in two-wheel drive (2wd), most commonly on a

- 2020 - 2019 - 2018 - 2017 - 2016 - 2015 -

Models from 2020

2020 FORD EXPEDITION

2020 FORD F-150

2020 LINCOLN NAVIGATOR

Models from 2019

2019 FORD EXPEDITION

2019 FORD F-150

2019 LINCOLN NAVIGATOR

Models from 2018

2018 FORD EXPEDITION

2018 FORD F-150

2018 LINCOLN NAVIGATOR

Models from 2017

2017 FORD F-150

Models from 2016

2016 FORD F-150

Models from 2015

2015 FORD F-150

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SSM 49355 - 2015-2020 F-150, 2018-2020 Expedition/Navigator 3.5L/2.7L EcoBoost - 4WD - Intermittent Grinding Type Noise While
Driving
Some 2015-2020 F-150 and 2018-2020 Expedition/Navigator vehicles equipped with
a 3.5L/2.7L EcoBoost engine and four-wheel drive (4WD) may exhibit an intermittent
grinding type noise while driving in two-wheel drive (2WD), most commonly on
acceleration. This noise could appear to be turbocharger related. After engineering
analysis of returned turbochargers that have been replaced for this condition, no
concerns were identified with the turbochargers. The grinding type noise may be
related to the 4WD system integrated wheel ends (IWE). To aid in diagnosis, shift the
vehicle to 4WD and attempt to verify the condition. If the grinding noise no longer
occurs with the vehicle in 4WD a IWE vacuum system and/or mechanical fault may be
present.
APPLICABLE VEHICLES
2018 - 2020 TRUCK: B8 U553N EXPEDITION
2018 - 2020 TRUCK: B9 U554N NAVIGATOR
2015 - 2020 TRUCK: FC P552N F-150
2015 - 2020 TRUCK: FC P552N F-150
2019 - 2020 TRUCK: FC P552N F-150
https://www.fordtechservice.dealerconnection.com/vdirsnet/TSB_SSM/DisplayArticle.asp... 12/2/2020