June 17, 2024 NHTSA CAMPAIGN NUMBER: 24V444000
Unexpected Downshift Can Cause Loss of Control
Unexpectedly downshifting into first gear may result in a loss of vehicle control, increasing the risk of a crash.
NHTSA Campaign Number: 24V444
Manufacturer Ford Motor Company
Components POWER TRAIN
Potential Number of Units Affected 552,188
Summary
Ford Motor Company (Ford) is recalling certain 2014 F-150 vehicles. A loss of signal between the transmission output shaft speed sensor and the powertrain control module can cause the transmission to unexpectedly downshift into first gear, regardless of vehicle speed.
Remedy
Dealers will update the powertrain control module software, free of charge. Owner notification letters are expected to be mailed July 1, 2024. Owners may contact Ford customer service at 1-866-436-7332. Ford
’s number for this recall is 24S37.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Check if your Vehicle has a Recall
June 17, 2024
NEW VEHICLE DEMONSTRATION / DELIVERY HOLD –
Safety Recall 24S37
Certain 2014 Model Year F-150 Vehicles Equipped With A 6R80 Transmission
6R80 Sudden Transmission Downshift – Powertrain Control Module Programming
REASON FOR THIS SAFETY RECALL
In some of the affected vehicles, an intermittent Output Shaft Speed Sensor (OSS) failure may result in an unintended downshift into first gear. Depending on vehicle speed at the time of the downshift, an abrupt wheel speed reduction may occur, which could cause the rear tires to slide or lock up until the vehicle speed slows. This condition could result in a loss of vehicle control, increasing the risk of a crash.
SERVICE ACTION
Before demonstrating or delivering any new in-stock vehicles involved in this recall, dealers are to perform the following steps:
Check for DTCs P0720, P0722, P0731 and/or P1500 stored in the powertrain control module (PCM):
- If DTCs P0720, P0722, P0731 and/or P1500 are NOT present, check for available powertrain control module (PCM) software update and reprogram the PCM using IDS Release 130.05 or higher, while connected to the internet. Some vehicles may already have the latest software.
- If DTCs P0720, P0722, P0731 and/or P1500 are present, review the Labor Allowances and Parts Ordering Information.
Ford Technical Assistance Center and SSSC are receiving multiple reports of PCM programming failures, most due to misc. battery issues. Before performing module reprogramming, ensure that a battery charger is installed on the vehicle and battery state of charge is being maintained between 12.6 and 13.5 volts. If module reprogramming fails, refer to the recovery procedure outlined in the Technical Info portion of this FSA.
To assist vehicle owners to have this repair completed when parts are available, dealers should:
- Arrange for a mobile repair at the owner’s location (check for DTCs and PCM software updates only), or:
- DTCs P0720, P0722, P0731 and/or P1500 stored in the PCM: Arrange to pick up the owner’s vehicle and drive it to the dealership for repairs once parts are available.
- Re-deliver the owner’s vehicle after repairs have been completed.
- Pick-Up & Delivery, and mobile service as outlined above should be made available for all customers. Refer to the Rental and Claiming sections for further details.
Ford Motor Company (Ford) Recall No. 24S37 Chronology
CERTAIN 2014 FORD F-150 VEHICLES EQUIPPED WITH 6-SPEED AUTOMATICTRANSMISSIONS – UNEXPECTED TRANSMISSION DOWNSHIFT
Date of Submission: June 14, 2024
Chronology of Defect / Noncompliance Determination
Provide the chronology of events leading up to the defect decision or test data for the noncompliance decision.
On February 08, 2024, Ford’s Critical Concern Review Group (CCRG) opened an investigation into an increasing number of reports related to unexpected transmission downshifting on 2014 model year (MY) F-150 vehicles equipped with 6R80 six-speed automatic transmissions. On February 21, 2024, Ford discussed this topic with NHTSA Office of Defects Investigation (ODI) personnel. On February 22, 2024, NHTSA requested information regarding reports of unintended downshifting on 2014 MY F-150 vehicles and provided 86 Vehicle Owner Questionnaires (VOQs) potentially related to this condition.
On March 27, 2024, NHTSA opened Recall Query RQ24-005 to investigate the scope of Ford safety recalls 19S07 (NHTSA Recall Campaign 19V-075) and 19S19 (NHTSA Recall Campaign 19V-433) based on the VOQs reporting unexpected transmission downshifting in 2014 MY F150 vehicles that were not included in prior recall 19S07 or 19S19.
Ford has previously conducted field service actions (FSAs) addressing unexpected downshifts on F-150 vehicles equipped with 6R80 transmissions. 16S19 (NHTSA Recall Campaign 16V248) included certain 2011-2012 MY F-150 vehicles, as well as other vehicle lines, that may experience downshifts related to intermittent failures of the transmission Output Shaft Speed (OSS) sensor that is on the vehicles’ lead frame. 16S19 addressed a specific build window for which there was an identified root cause. In January 2018, NHTSA opened RQ17-010 based on VOQs concerning reports of unexpected transmission downshifting in vehicles that were not included in recall 16S19. In June 2018, Transport Canada opened Engineering Analysis 328009-26 based on similar complaints for vehicles not included in the recall. The CCRG investigation leading to 19S07 and 19S19 found no attributable pattern to the cause of intermittent OSS signal loss in the population outside of 16S19. On February 04, 2019, Ford’s Field Review Committee (FRC) approved FSA 19S07 for 2011-2013 MY Ford F-150 vehicles. On June 13, 2019, the FRC approved FSA 19S19 to update an error in the remedy recall software for certain MY 2013 vehicle configurations.
Through May 2024, the CCRG evaluated field reports and warranty data for 2014 MY F-150 vehicles alleging unexpected transmission downshifting. The rate of unexpected downshift reports remains lower for 2014 MY F-150 vehicles than the 2011-2013 MY F-150 vehicles previously recalled. Ford discussed these reports and other related concerns related to RQ24005 with NHTSA on several occasions between February and June 2024. Ford submitted its response to NHTSA’s Information Request on May 03, 2024, for Part 1 of the request and May 24, 2024, for Part 2 of the request.
As of April 08, 2024, Ford is aware of 300 warranty reports, 96 field reports and 124 customer complaints, corresponding to 482 vehicles in the US and US territories received from March 24, 2014, to March 29, 2024, related to unexpected transmission downshifting on 2014 MY F-150 vehicles. Of these reports, 40 vehicles had alleged rear wheel lock-up and/or loss of vehicle control. Ford is aware of 130 VOQs reports related to unexpected transmission downshifting, of which 52 alleged rear wheel lock-up and/or loss of vehicle control. Two VOQs allege injury and one VOQ alleges an accident that may be attributable to this condition.
On June 07, 2024, Ford’s Field Review Committee reviewed the concern and approved a field action.
1 Affected Product
Vehicle
| MAKE | MODEL | YEAR |
| FORD | F-150 | 2014 |
4 Associated Documents
Recall 573 Report
RCLRPT-24V444-2781.PDF 214.509KB
Manufacturer Notices(to Dealers,etc)
RCMN-24V444-8849.pdf 1179.058KB
Recall No. 24S37 Chronology June 14, 2024
Recall Acknowledgement
RCAK-24V444-7911.pdf 645.389KB
Reprogramming
Service Information & Reprogramming
Module Reprogramming
| Diagnostic Software | Interface Device | Complete Vehicle Diagnostics | Module Programming | ||
| 1996-2017 Model Year |
2018-Present Model Year |
1996-2017 Model Year |
2018-Present Model Year |
||
| IDS/FDRS | VCM, VCM II, VCMM |
X | X | X | X |
| FJDS/FDRS | Compatible J2534 Devices (Including VCM II and VCMM) |
X | X | X | |
Detailed system requirements, installation, and support information for each product is located under the diagnostics tool support tab for each product.
Integrated Diagnostic Software (IDS) / Ford Diagnosis & Repair System (FDRS)
For use with VCM I, VCM II, VMM and VCMM hardware devices only. The complete factory Ford Motor Company vehicle diagnostic tool that provides complete dealership level vehicle diagnostic coverage for all 1996 to present Ford, Lincoln and Mercury vehicles. The IDS software includes time based access to the IDS software, software updates and calibration files.
Ford J2534 Diagnostic Software (FJDS) / Ford Diagnosis & Repair System (FDRS)
For use with compatible J2534 hardware devices. FJDS software provides Ford Module Programming functionality that covers 1996 to present Ford, Lincoln and Mercury module reprogramming functions, plus complete dealership level vehicle diagnostic software for all 2018 to present Ford and Lincoln vehicles. The FJDS software license includes time based access to the FJDS software, software updates and calibration files.
Latest Calibration Information
Module Build Data (As-Built)
Use VIN to obtain As-Built data
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