2021 Ford Explorer — Factory Maintenance Schedule

Quick reference

Severe-duty schedule

Operating your 2021 Ford Explorer under severe conditions necessitates more frequent maintenance to ensure its longevity and performance. Severe driving conditions include:

• Towing or hauling heavy loads: The added strain on the engine, transmission, and brakes requires more frequent fluid changes and inspections.
• Driving in dusty, sandy, or muddy conditions: These environments can rapidly clog air filters and introduce abrasive contaminants into various systems.
• Regular short trips (less than 10 miles especially in cold weather): Short trips prevent the engine from reaching optimal operating temperature, leading to moisture and sludge buildup in the oil.
• Extended periods of idling or low-speed driving (e.g., heavy city traffic): This can lead to increased engine wear and higher operating temperatures for fluids.
• Driving in extremely cold climates: Cold weather puts additional stress on all fluids and the battery.

For vehicles primarily operated under severe conditions, consider the following adjustments:

• Engine Oil & Filter: Change every 3,000-5,000 miles or every 3-6 months.
• Tire Rotation: Every 5,000 miles.
• Cabin and Engine Air Filters: Inspect every 10,000 miles and replace as needed, potentially every 15,000-20,000 miles, especially in dusty conditions.
• Transmission Fluid: Consider servicing every 30,0050,000 miles. Consult your owner's manual or a Ford technician for specific recommendations based on usage.
• Brake Fluid: Flush every 20,000-30,000 miles, particularly if towing frequently.
• Differential and Transfer Case Fluids: Service every 30,000-50,000 miles.
• Accessory Drive Belt: Inspect more frequently, perhaps every 30,000 miles, and replace if any signs of wear are present.

Always refer to your owner's manual for the most accurate severe-duty recommendations or consult with an ASE-certified technician.

Known issues by mileage (This Generation - 2020-Present)

While the 2021 Ford Explorer is a relatively new model, some trends and potential issues from its initial years are emerging across its generation. It's important to note that not all vehicles will experience these, and many can be mitigated with proper maintenance.

• Under 30,000 miles:

  • Infotainment System Glitches: Some owners have reported issues with the SYNC system, including freezing, slow response, or connectivity problems. Often resolved with software updates.
  • Minor Trim/Panel Rattle: Early production vehicles sometimes exhibit minor interior trim rattles, which can often be diagnosed and addressed by the dealership.
  • Powertrain Control Module (PCM) Updates: Ford may issue updates to optimize engine and transmission performance, which can address minor shifting eccentricities.

• 30,000 - 60,000 miles:

  • Brake Wear: Depending on driving habits, brake pads and rotors may require replacement around this mileage, especially if heavy towing or aggressive driving is common.
  • Tire Wear: Original equipment tires typically last in this range, requiring replacement.
  • HVAC Actuator Issues: Less common, but some reports of climate control vents not directing air correctly, potentially due to faulty blend door actuators.

• 60,000 - 100,000 miles:

  • Spark Plug Replacement: As recommended by the factory, spark plugs are due. Neglecting this can lead to reduced fuel economy and engine misfires.
  • Transmission Performance: While not a widespread "issue," keeping up with transmission fluid service in this range is crucial for preventing future problems, especially given some driver reports of occasional harsh shifts in this generation.
  • Accessory Belt Wear: The accessory drive belt should be inspected closely and replaced if any cracking or fraying is present.

• 100,000+ miles:

  • Suspension Component Wear: Bushings, tie rods, and other suspension components may start to show wear, leading to looseness or noises. This is typical wear-and-tear for any vehicle at this mileage.
  • Fluid Degradation: Adhering to coolant and transmission fluid flushes at this interval is paramount to prevent long-term component damage.
  • PCV Valve: The PCV valve should be inspected and replaced if clogged. While not always a common failure point, a neglected PCV valve can lead to oil leaks or engine performance issues.

Estimated cost per service

These are approximate costs and can vary significantly based on your location, the specific repair shop (dealership vs. independent), and the parts used. Always get a detailed quote before authorizing any work.

• Oil and Filter Change: $60-$120 (synthetic oil)
• Tire Rotation: $25-$50 (often included with oil change at dealerships)
• Cabin Air Filter Replacement: $40-$80 (part + labor)
• Engine Air Filter Replacement: $40-$80 (part + labor)
• Brake Fluid Flush: $100-$180
• Differential Fluid Service: $150-$250 per differential
• Transfer Case Fluid Service: $100-$180
• Spark Plug Replacement: $250-$450 (for V6 engines, includes parts and labor)
• Transmission Fluid Service (Drain and Fill): $200-$400 (Fluid and labor. A full flush can be more expensive and may not be recommended by all manufacturers or technicians without specific symptoms.)
• Coolant Flush: $150-$250
• Accessory Drive Belt Replacement: $120-$250 (part + labor)

What you can DIY vs shop

Many maintenance tasks on your 2021 Ford Explorer can be performed by the average DIY enthusiast, saving you money on labor costs. However, some tasks require specialized tools, diagnostic equipment, or a higher level of technical expertise and are best left to a professional shop.

Easily DIYable:

• Oil and Filter Change: With basic tools, ramps or jack stands, and a drain pan, this is one of the most common DIY tasks. Ensure proper disposal of used oil.
• Tire Rotation: Requires a jack and jack stands, or a lift. Basic mechanical skills are needed.
• Cabin Air Filter Replacement: Typically easily accessible behind the glove box and requires no tools.
• Engine Air Filter Replacement: Usually involves unclipping the airbox cover; no special tools required.
• Wiper Blade Replacement: A simple task that takes minutes.
• Fluid Level Checks: Checking oil, coolant, brake fluid, and washer fluid levels is straightforward.

Best Left to a Shop:

• Brake Fluid Flush: Improper bleeding can lead to spongy brakes or air in the system, compromising safety. Special tools are sometimes required.
• Transmission Fluid Service: Requires specific fluid types, precise fill levels, and sometimes diagnostic tools to monitor temperature for accurate filling. Dropping the pan on some transmissions can be messy and complex.
• Coolant Flush: Proper disposal of old coolant is crucial, and air pockets in the cooling system can cause significant engine damage. Requires careful bleeding procedures.
• Spark Plug Replacement: On some modern engines, spark plugs can be difficult to access. Incorrect torque or cross-threading can lead to costly engine damage. A Ford V6 on an Explorer can be tricky.
• Differential and Transfer Case Fluid Service: Involves specific fluid types and often requires careful attention to fill levels and proper sealing to prevent leaks.
• Accessory Drive Belt Replacement: While seemingly simple, routing the belt correctly and managing the tensioner can be challenging without proper tools or experience.
• Any task requiring specialized diagnostic equipment: Such as checking sensor readings, programming modules, or diagnosing complex electronic issues.
• Timing Chain Inspection/Replacement: The 2021 Explorer uses a timing chain, which is designed to last the life of the vehicle and typically does not require replacement unless there's an issue. Inspection or replacement involves significant engine disassembly and is strictly a job for a qualified technician.

When in doubt, always consult your owner's manual or an ASE-certified technician. Safety should always be your top priority when performing any maintenance on your vehicle.

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