2018 Ford Explorer Factory Maintenance Schedule

Quick reference

Normal vs. Severe-Duty Schedule

Ford outlines two primary maintenance schedules for your 2018 Explorer: Normal Duty and Severe Duty. Adhering to the correct schedule is crucial for the longevity and performance of your vehicle.

Normal-Duty Driving Conditions: Predominantly highway driving, infrequent short trips, minimal towing, and driving in mild climates without excessive dust or extreme temperatures.

Severe-Duty Driving Conditions: This schedule applies if you frequently encounter any of the following:

• Towing or heavy hauling: Regularly towing a trailer or carrying heavy loads puts additional strain on the engine, transmission, and brakes.
• Extensive idling or stop-and-go driving: Common in urban environments, this leads to increased engine wear and higher operating temperatures.
• Driving in dusty or sandy conditions: Accelerates the clogging of air filters and can affect other components.
• Short trips (less than 10 miles) in extreme cold: Prevents the engine from reaching optimal operating temperature, leading to moisture buildup in the oil.
• Driving in very hot or very cold climates: Extreme temperatures can stress vehicle fluids and components.
• Operating as a police, taxi, or delivery vehicle: These operations inherently fall under severe duty due to high mileage and demanding usage.

If any of these conditions apply to your driving habits, it is recommended to follow the severe-duty schedule, which often shortens service intervals for items like oil changes and inspections.

Known Issues by Mileage for the 2018 Ford Explorer (Fifth Generation: 2011-2019)

The fifth-generation Ford Explorer, including the 2018 model, had some common issues to be aware of. While not every vehicle will experience these, they are worth monitoring during your maintenance:

• Around 60,000 - 80,000 miles: Water Pump Failure. The internal water pump on the 3.5L and 3.7L engines (and later the 2.3L EcoBoost) can develop leaks, often leading to coolant mixing with the engine oil. This is a significant repair due to its location, often requiring engine removal. Early detection of coolant loss or unusual engine noises is key.
• Around 70,000 - 100,000 miles: Power Transfer Unit (PTU) Issues (AWD models). The PTU, which sends power to the rear wheels in AWD models, can be prone to premature failure, especially if the fluid is not regularly maintained (though Ford typically considers it "lifetime" fluid, many owners and technicians recommend servicing it). Symptoms include grinding noises, clunking, or leaks.
• Around 80,000 - 120,000 miles: EPAS (Electric Power-Assist Steering) System Malfunctions. While less common on newer models, early fifth-generation Explorers sometimes had issues with the EPAS system, leading to a loss of power steering assist. This usually manifests as a sudden increase in steering effort.
• General: Rear Suspension Noise/Rattles. Some owners have reported various noises from the rear suspension, attributed to worn bushings or links. This is often an inspection item during routine service.

Estimated Cost Per Service (Ranges shown, may vary greatly by region and shop)

• Oil and filter change (synthetic blend): $50 - $100
• Tire rotation: $20 - $40 (often included with oil change at dealerships)
• Cabin air filter replacement: $40 - $80 (parts and labor)
• Engine air filter replacement: $40 - $80 (parts and labor)
• Brake fluid flush: $100 - $150
• Spark plug replacement: $200 - $400 (V6 engines can be more labor-intensive)
• Coolant flush: $150 - $250
• Transmission fluid and filter service: $250 - $450
• Differential fluid service: $100 - $200 per differential
• Transfer case fluid service (AWD): $80 - $150
• Timing chain inspection: Generally part of a larger diagnostic, no specific standalone cost unless an issue is suspected.
• Accessory belt inspection/replacement: $100 - $200 (inspection is often free with other services, replacement cost varies by labor difficulty).

These are general estimates. Always get a detailed quote from your service provider.

What You Can DIY vs. What Requires a Shop

Many maintenance tasks on your 2018 Ford Explorer can be performed at home with basic tools and some mechanical aptitude, while others are best left to professional technicians.

Easily DIY (with basic tools and knowledge):

• Oil and filter change: Relatively straightforward, requires a jack, jack stands, wrench, and drain pan. Be sure to use the correct oil type and filter.
• Tire rotation: Requires a jack, jack stands, and lug wrench. Follow proper lifting procedures.
• Cabin air filter replacement: Typically located behind the glove box and easily accessible without tools.
• Engine air filter replacement: Usually a few clips or screws hold the airbox lid.
• Wiper blade replacement: A simple swap.

Moderate DIY (requires more tools/experience or careful attention):

• Brake pad inspection: You can visually inspect pads and rotors, but replacement requires more specific tools and knowledge of braking systems.
• Accessory drive belt inspection: Visual inspection is good, but replacement can be tricky without proper tensioner tools and routing diagrams.

Best Left to a Professional Shop:

• Brake fluid flush: Requires specialized equipment to properly bleed the system and ensure no air enters the lines.
• Spark plug replacement: On V6 engines, some plugs can be difficult to access, and improper installation can cause significant engine damage.
• Coolant flush: Proper disposal of old coolant and ensuring all air is purged from the system is crucial.
• Transmission fluid and filter service: Requires specific tools for draining, filling, and monitoring fluid levels and temperature. Incorrect procedure can damage the transmission.
• Differential and transfer case fluid services: Requires specific fluid types and can involve precise filling procedures.
• Timing chain inspection/repair: A complex engine procedure requiring specialized tools and extensive mechanical knowledge. The 2018 Explorer uses a timing chain designed for the life of the engine, not a belt with a replacement interval.
• Any diagnostic work for warning lights or unusual noises: Professional technicians have diagnostic equipment and expertise to accurately pinpoint problems.

Always consult your owner's manual for specific instructions and warnings before attempting any DIY maintenance.

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