Frame rust and cracking at factory welds
Extensive premature corrosion, actual cracking and separation at factory welds
Check engine light: Off
Extensive premature rust and corrosion throughout the frame, with some owners reporting actual frame cracking and separation at factory welds — severe enough that some describe it as preventing safe vehicle operation. Similar frame and subframe rust is reported on the Toyota 4Runner, Toyota FJ Cruiser, Mitsubishi Outlander, and Honda Pilot, but the weld separation described here is more severe.
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Front axle fracture / wheel separation
Wheel separates from the vehicle while driving
Check engine light: Off
Front axle fractures have been reported causing the wheel to separate from the vehicle while in operation — among the most severe safety problems reported for this truck. Not clearly tied to a specific recall in the available data, beyond a wheel-related Recall/Campaign 18E069 referenced without further scope detail.
Similar wheel-separation and axle-fracture reports appear on the Dodge Ram 1500, pointing to a possible full-size-truck axle durability issue.
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5.4L V8 spark plug blowout and cam phaser failure
Spark plugs blow out or strip threads, power loss, stalling, audible knocking
Check engine light: On
A widely documented, industry-recognized defect specific to Ford's 5.4L Triton V8 of this era: spark plugs blow out of the cylinder head or strip the threads during removal. Frequently paired with cam phaser failures causing power loss, stalling, and audible knocking, plus timing chain/tensioner premature failures.
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Transmission cooler line failure (coolant/fluid contamination)
Coolant mixes with transmission fluid, transmission damage
Check engine light: On
Transmission cooler line failures allow coolant to mix with transmission fluid — the same contamination defect also reported on the Nissan Pathfinder and Nissan Xterra. This suggests a radiator/cooler design vulnerability that spans manufacturers rather than a single automaker's quirk.
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Complete transmission failure
Difficulty shifting, slipping in reverse, jerking between gears
Check engine light: On
Complete transmission failures requiring full replacement, alongside difficulty shifting between gears, transmission slipping in reverse, and jerking when shifting into or out of park, reverse, or drive.
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Fuel pump driver module corrosion
Fuel pump failure, thermostat housing coolant leaks, fuel odor after refueling
Check engine light: On
A known Ford-specific failure mode for this generation: fuel pump driver module corrosion, alongside coolant leaks from thermostat housing areas and fuel odor/leak issues after refueling.
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Additional safety-critical problems
Airbag non-deployment, brake pedal failure at highway speeds, unintended acceleration when braking
Check engine light: Off
A cluster of additional safety-critical problems: airbag non-deployment during crashes, brake pedal failure at highway speeds, and unintended acceleration reported when braking. Owners also report stalling combined with loss of power steering and brake assist.
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Little or No Heat in Cabin
Little or no heat in the cabin
Check engine light: Off
Little or no heat in the cabin. This is among the more frequently reported issues on this generation, with 427 owner reports on file.
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Engine Runs Rough at Idle
Engine runs rough at idle
Check engine light: On
Engine runs rough at idle. This is among the more frequently reported issues on this generation, with 188 owner reports on file.
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Updated Differential Clutch Kit Available if Rear End Noise Is Heard
An updated differential clutch kit is available if rear-end noise is heard
Check engine light: Off
An updated differential clutch kit is available if rear-end noise is heard. This is among the more frequently reported issues on this generation, with 300 owner reports on file.
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Ignition Coil Failure Due to Excessive Spark Plug Gap
Ignition coil failure due to an excessive spark plug gap
Check engine light: On
Ignition coil failure due to an excessive spark plug gap. This is among the more frequently reported issues on this generation, with 167 owner reports on file.
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Oil May Leak Onto Starter From Passenger-Side Head Gasket
Oil leaks onto the starter from the passenger-side head gasket
Check engine light: Off
Oil leaks onto the starter from the passenger-side head gasket. This is among the more frequently reported issues on this generation, with 162 owner reports on file.
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Exhaust Manifolds Can Crack and Cause Leak
Exhaust manifolds crack and cause a leak
Check engine light: Off
Exhaust manifolds crack and cause a leak. This is among the more frequently reported issues on this generation, with 146 owner reports on file.
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Engine Oil Pan Gasket May Leak
Engine oil pan gasket leaks
Check engine light: Off
Engine oil pan gasket leaks. This is among the more frequently reported issues on this generation, with 95 owner reports on file.
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Blower Motor Only Works on High
Blower motor only works on the high setting
Check engine light: Off
Blower motor only works on the high setting. This is among the more frequently reported issues on this generation, with 86 owner reports on file.
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Water Leak Into Cabin From High Mount Brake Light Causing Headliner Damage
Water leaks into the cabin from the high-mount brake light, damaging the headliner
Check engine light: Off
Water leaks into the cabin from the high-mount brake light, damaging the headliner. This is among the more frequently reported issues on this generation, with 60 owner reports on file.
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Check engine light after hesitation or stalling
Check engine light after hesitation or stalling
Check engine light: On
Check engine light after hesitation or stalling. This is among the more frequently reported issues on this generation, with 36 owner reports on file.
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Rough Idle Caused by EGR Sensor Sticking
Rough idle caused by a sticking EGR sensor
Check engine light: On
Rough idle caused by a sticking EGR sensor. This is among the more frequently reported issues on this generation, with 34 owner reports on file.
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Rough Engine Restart and Idle Issue When Warm After Driving
Rough engine restart and idle issue when warm after driving
Check engine light: Off
Rough engine restart and idle issue when warm after driving. This is among the more frequently reported issues on this generation, with 32 owner reports on file.
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This generation shows some of the most severe frame corrosion documented anywhere, with owners reporting actual cracking and separation at the factory frame welds — not just surface rust. Owners also report the front axle fracturing and the wheel separating from the vehicle while in operation. Neither problem is tied to a confirmed recall in the available data.