Ford has discovered a problem affecting specific hybrid vehicles, including the 2022-2024 Maverick, 2020-2022 Escape, and 2021-2022 Lincoln Corsair models. These vehicles may contain software that could cause the vehicle to shift into neutral unexpectedly.

Investigation and Findings

In March 2024, Ford’s Critical Concern Review Group (CCRG) initiated an investigation following field reports indicating that some vehicles were shifting to neutral after receiving a Hybrid Powertrain Control Module (HPCM) software update at dealerships. The powertrain controls and calibration team discovered that the new Hybrid Transmission Internal Park Module (HTIPM) software, which had been released for service in January 2024, was incorrectly detecting noise in the Park Motor Position Sensor. This led to the generation of erroneous Park Motor Position Sensor Diagnostic Trouble Codes (DTCs) U1010 and U1011.

Field Action Approval

On May 3, 2024, Ford’s Field Review Committee examined the issue and approved a field action to address the problem. According to the defect report, the affected vehicles received HPCM software that could force the vehicle into a neutral state while driving. As the vehicle coasts to a stop, the transmission will automatically shift to “Park”. Despite this issue, drivers retain functionality for power braking and power steering. Once the driver shifts back to drive, the vehicle enters a limp home mode, which provides limited torque at low speeds up to 30 mph.

Reported Incidents and Warranty Claims

Ford has reported 315 warranty claims in North America and 125 Vehicle Owner Questionnaires (VOQs) that may be related to this software issue. These incidents highlight the importance of addressing the defect to ensure driver safety and vehicle reliability.

Recall Details and Owner Notification

To rectify the problem, dealers will update the HPCM software free of charge. Ford plans to mail owner notification letters starting on May 23, 2024. For reference, Ford’s recall number for this issue is 24S33, and the National Highway Traffic Safety Administration (NHTSA) campaign number is 24V-330.

Owners of the affected vehicles are encouraged to contact their dealers promptly to schedule the necessary software update. Ensuring that your vehicle receives this update is crucial for maintaining optimal performance and safety.

Summary

• Affected Vehicles: 2022-2024 Ford Maverick, 2020-2022 Ford Escape, and 2021-2022 Lincoln Corsair hybrid models.
• Issue: Software may cause unexpected shifts into neutral.
• Investigation Start: March 2024 by Ford’s CCRG.
• Findings: Noise in Park Motor Position Sensor detected by HTIPM software, causing erroneous DTCs U1010 and U1011.
• Action Approved: May 3, 2024, by Ford’s Field Review Committee.
• Incidents Reported: 315 warranty claims and 125 VOQs in North America.
• Solution: HPCM software update by dealers.
• Owner Notification: Letters to be mailed starting May 23, 2024.
• Recall Numbers: Ford 24S33, NHTSA 24V-330.