ExhaustHigh
Exhaust fumes/carbon monoxide entering the cabin (subject to investigation and TSBs).
- Typically appears
- Any
- What to inspect
- Smell for exhaust odor under acceleration with the AC on recirculate; confirm any sealing TSB.
2016–2019 Ford Explorer · common problems & known faults
The fifth-gen Explorer is a roomy family SUV, but exhaust-odor concerns and the PTU/transmission are important checks.
Compiled & reviewed by the VehicleFaults Research Team · last reviewed July 2026
Quick answer
The most commonly reported faults on the 2016–2019 Ford Explorer are Exhaust fumes/carbon monoxide entering the cabin (subject to investigation and TSBs), Power transfer unit (PTU) overheating/failure on AWD models and Internal water pump on the 3.5L NA V6 (behind the timing cover). 5 of the documented issues are rated high severity · inspect these first. Full inspection points, onset mileage and what to check are listed below.
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Build the inspection planReliability snapshot
Based on the documented faults on this page for the Ford Explorer.
2.8/ 10
- Critical
- 0
- High
- 5
- Medium
- 3
- Low
- 0
Guidance only · reflects reported patterns, not a specific car's condition.
Ford Explorer problems by year
Which faults an average example has usually reached depends on its age. Pick a model year for the faults that matter on that build.
Known faults to check
DrivetrainHigh
Power transfer unit (PTU) overheating/failure on AWD models.
- Typically appears
- 70,000+ miles
- What to inspect
- Ask about PTU fluid service; listen for whine and check for leaks.
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Build the inspection planTransmissionMedium
Harsh or delayed shifts.
- Typically appears
- Any
- What to inspect
- Test-drive for smooth engagement.
CoolingHigh
Internal water pump on the 3.5L NA V6 (behind the timing cover).
- Typically appears
- 90,000+ miles
- What to inspect
- Check coolant loss history — replacement is labor-intensive.
SteeringHigh
Heavy steering or sudden loss of power assistance with dash warning.
- Typically appears
- 70,000-100,000 miles
- What to inspect
- Start the engine and turn the steering wheel lock-to-lock whilst stationary. Feel for notches, listen for clunks, and ensure no 'Steering Fault' messages appear on the dash.
BodyworkMedium
Bubbling or blistering paintwork on the front leading edge of the bonnet.
- Typically appears
- 3-5 years or 40,000+ miles
- What to inspect
- Run your fingers along the front lip of the bonnet, both underneath and on top, feeling for raised, bubbling paint or visible white powdery aluminium corrosion.
ElectricalMedium
Infotainment screen goes black, freezes, or sat-nav loses GPS tracking.
- Typically appears
- 50,000-80,000 miles
- What to inspect
- Turn on the ignition and ensure the SYNC 3 screen boots up promptly. Test the touchscreen responsiveness and cycle through the radio and sat-nav menus to check for severe lag.
SuspensionHigh
Rear-end sway at speed, clunking over bumps, or severe inner tyre wear.
- Typically appears
- 60,000-90,000 miles
- What to inspect
- Kneel behind the rear wheels to visually inspect the rear suspension toe links for heavy corrosion. Check the inner edges of both rear tyres for excessive, uneven wear.
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Build my inspection planFrequently asked questions
Is the Ford Explorer safe from the exhaust issue?
Many were addressed by TSBs — smell-test on a drive and confirm the fix history before buying.
What is the PTU problem?
The AWD power transfer unit can overheat and fail if its fluid isn't serviced; ask about maintenance.
Which engine to choose?
The 2.3L EcoBoost and 3.5L are common; note the NA 3.5L's internal water pump when high-mileage.
Are there any major safety recalls I should check for before retailing?
Yes, the most critical recall involves the rear suspension toe links. These can fracture due to corrosion and stress, leading to a sudden loss of vehicle control. Always check the vehicle's history or the manufacturer's portal to ensure the upgraded toe links have been fitted before selling the car.
How reliable is the SYNC 3 infotainment system on these models?
While generally an improvement over earlier systems, the SYNC 3 unit in this era frequently suffers from Accessory Protocol Interface Module (APIM) failure. If the screen is unresponsive, black, or drops Bluetooth connections during your forecourt appraisal, it will likely require a costly replacement module rather than a software update.
Why does the bonnet paint bubble, and is it an easy fix?
The bubbling is caused by galvanic corrosion on the aluminium bonnet, typically starting at the front leading edge. It is a widespread manufacturing defect across this generation. Because the corrosion starts beneath the paint, a simple respray rarely lasts, often necessitating a complete and costly replacement of the bonnet panel.
Sources & further reading
Faults are compiled from documented recalls, technical bulletins, owner reports and mechanic sources, then reviewed for accuracy. This is guidance only · not a substitute for a professional inspection.
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