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Service bulletin SSM 48450

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 id10170924
Published by NHTSA2020-02-04
Manufacturer's numberSSM 48450
Manufacturer's date2020-01-16
NHTSA componentSERVICE BRAKES

NHTSA's summary

Some 2016-2019 F-650/F-750 vehicles equipped with a 6.7L engine and an air brake system may exhibit inoperative cruise control and/or immediate transmission downshifting when releasing the accelerator pedal. This may be caused by an in range failure of the brake pedal pressure transducer (7920) that does not set a diagnostic trouble code (DTC). The Integrated Diagnostic System (IDS) can be used to view the WHEEL TRQ RAW PID in the generic function module (GFM). It displays the voltage value of the brake pedal pressure transducer. The voltage should be between 0.35 volts and 0.65 volts with the brakes released and will increase with brake pedal pressure. An inoperative transducer will not change with brake pedal pressure. Refer to Workshop Manual (WSM), Section 206-08 for the location of the brake pedal pressure transducer.

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

Brakes

Vehicles listed
FORD F-650 SD2016, 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
FORD F-750 SD2016, 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it)

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

Recalls for the same vehicles and component
20183112018-06-13. Brakes
18V3890002018-06-11. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS
18V3190002018-05-16. PARKING BRAKE
20161392016-03-31. Brakes
16V1820002016-03-31. PARKING BRAKE
15V8580002015-12-22. SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS
20156092015-12-21. Brakes

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
SIL 7902021-04-06. Service bulletin. It has been discovered that some hydraulic lines installed by Altec may be in contact with chassis air brake line(s). Some DOT inspections have considered this to be a violation of federal regulation 49 CFR § 393.45 b 2. Over time, chafing of the air brake line(s) could result in loss of air pressure and reduction in braking performance. Altec requires the routing of the hydraulic lines to be inspected no later than the next periodic maintenance interval. The affected unit are some T40P cable placers installed on Ford F750 chassis from May 2015 to January 2020
19B27-S12019-12-05. Service bulletin. Customer Satisfaction Program 19B27 – Supplement #1 Certain 2019 Model Year F-Super Duty Vehicles Uncured Power Steering Hoses
19B272019-12-05. Service bulletin. Customer Satisfaction Program 19B27 Certain 2019 Model Year F-Super Duty Vehicles Uncured Power Steering Hoses
SSM 482992019-12-04. Service bulletin. Some 2016-2019 F-750 vehicles may exhibit an excessive or uneven amount (inner versus outer) of front and/or rear brake pad wear. For vehicles exhibiting this condition, it's recommended to use FC4Z-2001-F brake pad kit when replacing front or rear pads. Some vehicle applications will demonstrate improved brake pad wear after installing this kit.
SSM 478012019-04-08. Service bulletin. Some 2017-2019 F-Super Duty vehicles may exhibit concerns related to brake drag. Utilize Workshop Manual (WSM) diagnostics in section 206-00 to verify the correct installation of the stoplamp switch. Improper adjustment of the stoplamp switch can cause the brake pedal assembly to lightly apply the brakes resulting in dragging condition
SSM 478012019-04-01. Service bulletin. Some 2017-2019 F-Super Duty vehicles may exhibit concerns related to brake drag. Utilize Workshop Manual (WSM) diagnostics in section 206-00 to verify the correct installation of the stoplamp switch. Improper adjustment of the stoplamp switch can cause the brake pedal assembly to lightly apply the brakes resulting in dragging condition
SSM 463702017-03-20. Service bulletin. SOME 2017 F-SUPER DUTY VEHICLES EXHIBIT CONCERNS RELATED TO BRAKE DRAG. UTILIZE WORKSHOP MANUAL (WSM) DIAGNOSTICS IN SECTION 206-00 TO VERIFY THE CORRECT INSTALLATION OF THE STOPLAMP SWITCH. IMPROPER ADJUSTMENT OF THE STOPLAMP SWITCH CAN CAUSE THE BRAKE PEDAL ASSEMBLY TO LIGHTLY APPLY THE BRAKES RESULTING IN DRAGGING CONDITION.
SSM 462572017-03-10. Service bulletin. ALL 2017 F-SUPER DUTY VEHICLES EQUIPPED WITH A FACTORY TRAILER BRAKE CONTROLLER (TBC) UTILIZE A TRAILER MODULE (TRM) WHICH INITIATES THE TRAILER CHARGING SYSTEM. FOR TRAILER CHARGING TO OPERATE, THE TRM MUST DETECT A TRAILER IS CONNECTED AND A BRAKE PEDAL INPUT BEFORE CHARGING WILL BE PRESENT AT THE TRAILER CONNECTOR. ADDING THE TRAILER BATTERY CHARGE RELAY AND FUSE INTO THE BATTERY JUNCTION BOX ARE NOT REQUIRED TO OPERATE TRAILER CHARGING WITH A TRM. IF TESTING OF THE TRAILER CHARGING SYSTEM IS REQUIRED WITHOUT A TRAILER, REFER TO THE UPDATED DIAGNOSTICS AND SYSTEM OPERATION FOUND IN THE ONLINE WORKSHOP MANUAL (WSM), SECTION 417-01 EXTERIOR LIGHTING.
SSM-458252016-08-30. Service bulletin. STATIONARY ELEVATED IDLE CONTROL (SEIC) DISABLEMENT - HYDRAULIC BRAKE APPLICATIONS ONLY