2017 Ford Explorer Factory Maintenance Schedule

Keeping your 2017 Ford Explorer running smoothly and reliably requires strict adherence to the manufacturer's maintenance schedule. As an ASE-certified master technician, I’ve seen firsthand how a well-maintained Explorer can easily surpass 200,000 miles, while neglected models often fall victim to costly engine or drivetrain repairs. Below is the comprehensive factory-spec maintenance guide for the 2017 Ford Explorer (covering the 2.3L EcoBoost, 3.5L V6, and 3.5L EcoBoost engines).

Quick reference

Ford utilizes an Intelligent Oil-Life Monitor (IOLM), which calculates oil life based on driving conditions. Under normal conditions, this typically triggers between 7,500 and 10,000 miles. Always perform tire rotations and basic inspections alongside your oil changes.

Note: The 2017 Ford Explorer utilizes a "lifetime" in-tank fuel filter that does not require scheduled replacement unless diagnosing a fuel pressure issue. The PCV valve should be inspected around 100,000 miles and replaced if clogged.

Severe-duty schedule

If you use your Explorer for towing, frequent short trips (under 5 miles), extensive idling, or drive in dusty, extremely hot, or cold climates, you fall under the "Severe Duty" category. The Intelligent Oil-Life Monitor will adjust your oil intervals to closer to 3,000–5,000 miles.

However, the most critical severe-duty adjustment for the AWD Explorer is the Power Transfer Unit (PTU) and transmission fluid. While Ford lists these as 150,000-mile items under normal conditions, severe-duty applications dictate servicing the transmission and PTU fluid every 30,000 miles. I highly recommend this shorter interval for the PTU even under normal driving, as fluid breakdown in this component is a known vulnerability. Spark plugs on EcoBoost models should also be dropped to a 60,000-mile interval under severe duty to prevent misfires under heavy load.

Known issues by mileage

The 5th-generation Ford Explorer is a fantastic SUV, but it has a few specific quirks and weak points you should be aware of as the miles pile up:

• 30,000 - 60,000 Miles (PTU Failure): AWD models are notorious for Power Transfer Unit (PTU) failures. The unit sits very close to the exhaust, causing the gear oil to "cook" and turn to sludge. Preventative fluid changes every 30k miles are the best defense.
• 50,000 - 80,000 Miles (Exhaust Smell): Some owners report an exhaust odor in the cabin during heavy acceleration. Ford has issued technical service bulletins (TSBs) to address sealing issues in the HVAC system and exhaust system.
• 80,000 - 120,000 Miles (Internal Water Pump Failure): This is the most critical issue for the 3.5L V6 (both naturally aspirated and EcoBoost). The water pump is driven by the timing chain and sits inside the engine. When the pump's seal fails, coolant can mix with engine oil, potentially destroying the engine if not caught immediately. Watch for unexplained coolant loss or a milky appearance on your oil dipstick.
• Any Mileage (Hood Paint Blistering): The aluminum hood on this generation is prone to galvanic corrosion along the front leading edge, causing the paint to bubble.

Estimated cost per service

• Minor Service (10k/20k/40k/50k): $80 – $150. Covers full synthetic oil change, premium filter, tire rotation, and comprehensive visual inspections.
• Intermediate Service (30k/60k/90k): $200 – $350. Includes oil change, tire rotation, engine air filter, cabin air filter, and potentially a brake fluid flush.
• Major Service (100k): $500 – $800. Includes spark plug replacement (intake manifold removal required on V6 engines), coolant flush, oil change, and thorough belt/hose inspections.
• Drivetrain Service (150k or 30k Severe): $400 – $700. Transmission fluid drain and fill, PTU (transfer case) fluid change, and rear differential fluid change.

What you can DIY vs shop

The 2017 Explorer is relatively friendly for the weekend mechanic, but some tasks are best left to professionals.

DIY:

• Engine & Cabin Air Filters: Very simple. The engine filter takes 5 minutes under the hood, and the cabin filter sits conveniently behind the glove box.
• Oil & Filter Changes: Accessible, though removing the aerodynamic under-tray adds a few extra minutes to the job.
• Brake Pads & Rotors: Standard disc brakes on all four corners. If you've done brakes before, you'll have no trouble here.

Shop:

• Spark Plugs (V6 Engines): The upper intake manifold must be removed to access the rear bank of spark plugs. While manageable for advanced DIYers, it's easy to create vacuum leaks if gaskets aren't seated perfectly.
• Coolant Flush: Modern cooling systems require specific vacuum-filling procedures to prevent air pockets that can cause localized overheating.
• Transmission & PTU Fluid: The 6F-series transmission lacks a traditional dipstick, requiring the vehicle to be level and at a specific operating temperature to set the correct fluid level. PTU fluid extraction can also be incredibly messy and tight to access.
• Water Pump Replacement: If your 3.5L water pump begins leaking, this is a major job requiring timing chain removal. Leave this to an experienced technician.

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