loss of motor power – California Lemon Law blog

Fiat Chrysler Automobiles (FCA US LLC) has identified a serious issue affecting certain 2022–2026 Jeep Grand Cherokee Plug-In Hybrid Electric (PHEV) vehicles. A software error within the Hybrid Control Processor (HCP) can result in a sudden loss of drive power, creating potential safety risks for drivers and passengers.

What’s the Problem?

The issue stems from the Battery Pack Control Module (BPCM) microprocessor. In some vehicles, the microprocessor may become overloaded and reset. During specific reset events, the HCP may misinterpret signals from the BPCM, causing the system to incorrectly shut down propulsion.

This defect could lead to a loss of drive power while operating, increasing the risk of a crash if drivers are unable to maintain control of their vehicles.

When Were the Vehicles Built?

The suspect period began on July 23, 2021, when the faulty HCP software was introduced into production, and ended on August 29, 2025, when FCA placed affected vehicles under plant control. Engineering records and assembly plant data were used to define this production window.

Chronology of Events

The chronology of events surrounding the discovery of the software problem in certain 2022–2026 Jeep Grand Cherokee Plug-In Hybrid Electric (PHEV) vehicles began on May 1, 2025, when FCA US LLC received a Preliminary Information Request from NHTSA’s Office of Defect Investigations, followed by FCA’s response on May 23, 2025. A supplemental request from NHTSA arrived on June 23, 2025, with FCA responding on July 14, 2025. Meanwhile, on June 24, 2025, FCA’s Technical Safety and Regulatory Compliance (TSRC) team opened an investigation into loss of propulsion complaints in Jeep Grand Cherokee PHEVs. Between June and August 2025, FCA US TSRC worked with FCA US Engineering to review the issue, analyze possible failure modes, and identify the suspect vehicle population. By August 18, 2025, FCA had recorded 96 customer assistance records, 110 field reports, and 320 service records related to the issue, though no accidents or injuries had been reported. Finally, on August 28, 2025, FCA’s Vehicle Regulations Committee concluded that a defect affecting motor vehicle safety potentially exists in all affected vehicles.

Recall Information

Chrysler Recall Number: 73C
NHTSA Campaign Number: 25V-576
Affected Vehicles: Certain 2022–2026 Jeep Grand Cherokee Plug-In Hybrid Electric (PHEV)

At this time, the remedy is still under development. FCA US expects to begin mailing owner notification letters on October 23, 2025.

Final Thoughts

The Jeep Grand Cherokee PHEV recall highlights the challenges of integrating advanced hybrid technology with complex vehicle software systems. While no accidents or injuries have been reported, the risk of propulsion loss makes this a critical safety concern.

Owners are encouraged to stay informed, act quickly once notifications arrive, and ensure their vehicles are repaired as soon as the remedy becomes available.

Low Oil Pressure Warning Ford Motor Company have identified a critical issue in certain 2024-2025 F-150, 2024 Expedition, and 2024 Lincoln Navigator vehicles equipped with the 3.5L GTDI engine. A misaligned engine cup plug has been found to potentially result in a rapid oil leak, posing serious safety risks.

The Problem: Misaligned Engine Cup Plug

The defect stems from a misalignment of the hydraulic press used to insert engine cup plugs into the cylinder head bore during assembly. This misalignment, approximately 1.5 mm off center, distorts the cup plug, reducing its retention within the bore. This defect may result in:

Rapid Oil Leak: A misaligned plug can cause sudden, large-volume oil loss.
Increased Fire Risk: Oil leaks in the presence of hot engine or exhaust components may lead to a fire.
Loss of Motive Power: A sudden loss of oil can result in reduced engine performance or a complete loss of motive power, increasing the risk of a crash.

Warning Signs for Customers

Drivers of affected vehicles may notice several warning signs, including:

Low Oil Pressure Warning: A warning light on the instrument cluster.
Burning Smell or Smoke: White smoke or a burning odor from the engine compartment.
Oil Leak or Engine Noise: Visible oil leakage or unusual noises from the engine.

Discovery and Investigation

The issue first came to Ford’s attention in October 2024 during a vehicle evaluation at the Kansas City Assembly Plant. A 2024 F-150 equipped with the 3.5L GTDI engine experienced a significant oil leak caused by the expulsion of a 13mm engine cup plug on the exhaust side.

Ford’s Critical Concern Review Group (CCRG) conducted an investigation and tear down analysis. They found no damage to the cylinder head bore but discovered that the cup plug was off center. The misalignment was traced back to maintenance work on the cylinder head assembly line at the Cleveland Engine Plant between September 9, 2024, and September 16, 2024. Other stations were confirmed to have proper alignment.

Field Action and Customer Notification

As of October 30, 2024, Ford has not received any warranty claims or field reports from customers regarding this issue. However, the company is taking measures to ensure customer safety:

Field Action Approval: Ford’s Field Review Committee approved the recall on November 1, 2024.
Dealer Inspections and Repairs: Dealers will inspect the cup plug alignment and replace any misaligned plugs.
Customer Notifications: Owner notification letters are scheduled to be mailed by December 2, 2024.

Recall Details

Ford Recall Number: 24S70
NHTSA Campaign Number: 24V-851

Next Steps for Vehicle Owners

Ford advises owners of the affected 2024-2025 F-150, 2024 Expedition, and 2024 Lincoln Navigator vehicles to monitor for any signs of the defect and to schedule an inspection with their dealer once notified. This precautionary recall aims to address the issue and ensure vehicle safety and reliability.

A small number of 2021-2022 Ford Escape and 2022 Lincoln Corsair hybrid power-train SUVs have been manufactured with a high voltage battery that could fail and result in a sudden loss of motor power. The problem was brought to Ford’s Critical Concern Review Group in October 2021 after an issue pertaining to an overheated high voltage battery bus bar was reported in Germany. Through a search of warranty reports, Ford identified an additional vehicle in Europe that reported a loss of function due to the overheated high voltage battery bus-bar.

During the manufacturing process, the high voltage bus-bar pad was not properly seated and could cause the pad to be mounted out of position prior to bus-bar welding. This condition could reduce the contact area between the cell terminal and the bus bar, giving it a high resistance. The high resistance could eventually result in an overheat situation.

According to the defect report, an overheated bus bar terminal may create a high resistance connection that could cause the battery pack high voltage bus voltage to fall below an operational level. If this happens, the hybrid power-train control module will sense the high voltage and detect a fault. A diagnostic trouble code will be sent and the vehicle will lose power. Drivers will also notice a “Stop Safely Now” warning message displayed on the instrument panel.

Ford’s team reviewed supplier process and production records to determine the population of affected parts. Affected vehicles are equipped with the 2.5L Hybrid power train and the suspect high voltage battery pack.

Dealers will replace the high voltage battery. Ford’s number for this recall is 21S48 and the NHTSA campaign number is 22V-149.

Do you think your Ford Escape or Lincoln Corsair could be a Lemon? Don’t live with a Lemon, especially if the problems you are having are safety-related. If you have any questions about your rights and the California Lemon Law, please call our office at 888-395-3666 for some great Lemon Law advice.

Tag Archives: loss of motor power

Jeep Grand Cherokee PHEV Software Problem May Cause Loss of Drive Power