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2021 Ford Explorer Maintenance Schedule

Manufacturer-recommended service intervals for the Intelligent Oil-Life Monitor and open recall alerts for your 2021 Ford Explorer.

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Recalls26Full scheduleKnown issues6

How Ford schedules service: Intelligent Oil-Life Monitor

Ford uses the Intelligent Oil-Life Monitor (IOLM) to determine when oil changes are due based on actual driving load — not just mileage. Ford's published cap is 10,000 miles or 1 year, whichever comes first. The schedule below reflects Ford's Normal service intervals; F-Series trucks and Super Duty have additional towing-specific items.

⚠️

26 Open Recalls

Source: NHTSA

SUSPENSION:REAR

Campaign #21V870000 · Oct 11, 2021

Issue: Ford Motor Company (Ford) is recalling certain 2021 Explorer and Lincoln Aviator vehicles. Incorrect rear suspension module components may have been installed due to a labeling error.

Risk: A rear suspension module with incorrect components may affect vehicle handling, ride height, and braking characteristics, increasing the risk of a crash.

Fix: Dealers will inspect the rear suspension module, and replace any incorrect parts, as necessary, free of charge. Owner notification letters were mailed December 3, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21S47.

ENGINE

Campaign #20V788000 · Dec 17, 2020

Issue: Ford Motor Company (Ford) is recalling certain 2020-2021 Explorer and Lincoln Aviator vehicles. The right hand motor mount fasteners may have been incorrectly tightened, and may loosen over time.

Risk: With a loose motor mount, motor vibration may cause the axle to disconnect from the engine and could result in loss of power, increasing the risk of a crash.

Fix: Ford will notify owners, and dealers will remove and replace the right hand motor mount fasteners, free of charge. The recall began February 3, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 20S72.

BACK OVER PREVENTION:SOFTWARE

Campaign #21V735000 · Sep 22, 2021

Issue: Ford Motor Company (Ford) is recalling certain 2020-2021 Explorer, Lincoln Corsair, and Lincoln Aviator vehicles equipped with 360-degree cameras. The video output may fail, preventing the rearview camera image from displaying.

Risk: A rearview camera that does not display an image reduces the driver's rear view, increasing the risk of a crash.

Fix: Dealers will update the Image Processing Module (IPMB) software, free of charge. Owner notification letters were mailed November 16, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21S44.

AIR BAGS:SIDE/WINDOW:CURTAIN

Campaign #21V652000 · Aug 23, 2021

Issue: Ford Motor Company (Ford) is recalling certain 2021 Explorer and Lincoln Aviator vehicles. The side air bag attachment weld studs could detach during the deployment of the side air bag, resulting in an improper deployment. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard 214, "Side Impact Protection".

Risk: Improper deployment of a side air bag increases the risk of injury during a crash.

Fix: Dealers will replace the side air bag assemblies, free of charge. Owner notification letters were mailed September 10, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21C19.

BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

Campaign #23V022000 · Jan 23, 2023

Issue: Ford Motor Company (Ford) is recalling certain 2020-2023 Explorer, Lincoln Aviator, and 2020-2022 Lincoln Corsair vehicles equipped with a 360-degree camera. The video output may fail, preventing the rearview camera image from displaying.

Risk: Loss of the rearview camera image can reduce the driver's rear visibility, increasing the risk of a crash.

Fix: Dealers will update the image processing module (IPMB) software, free of charge. Interim owner notification letters informing owners of the safety risk were mailed April 25, 2023. Owner notification letters were mailed February 13, 2023. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 23S02. This recall expands and replaces NHTSA recall number 21V-735. Vehicles previously repaired under 21V-735 will need to have the new remedy performed.

POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

Campaign #23V069000 · Oct 2, 2023

Issue: Ford Motor Company (Ford) is recalling certain 2020-2022 Explorer vehicles equipped with a 2.3L engine and 10R60 automatic transmission. An unintentional powertrain control module (PCM) reset may occur while the vehicle is in motion and result in park system damage.

Risk: A park system that is damaged may not shift into "PARK," resulting in a vehicle rollaway and increasing the risk of injury or crash.

Fix: Dealers will inspect the park system for damage and repair as necessary, free of charge. Owner notification letters were mailed March 28, 2023. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 23S05.

POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

Campaign #23V199000 · Mar 24, 2023

Issue: Ford Motor Company (Ford) is recalling certain 2020-2022 Explorer vehicles equipped with a 2.3L RWD, 3.3L GAS, 3.3L FHEV, or 3.0L ST powertrain. The previous powertrain control module (PCM) update completed under recall 22V-255 did not include the automatic electronic parking brake feature when the vehicle is shifted to park, as intended. In addition, the rear axle horizontal mounting bolt may fracture and cause the driveshaft to disconnect.

Risk: Without the electronic parking brake applied, the vehicle could rollaway if the driveshaft disconnects. A disconnected driveshaft can also result in a loss of drive power. Either of these scenarios can increase the risk of a crash.

Fix: Dealers will update the PCM software, free of charge. Owner notification letters were mailed on May 31, 2023. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 23S16.

BACK OVER PREVENTION:DISPLAY FUNCTION

Campaign #23V305000 · Apr 28, 2023

Issue: Ford Motor Company (Ford) is recalling certain 2020-2022 Explorer Police Interceptor Utility vehicles equipped with a 12.1-inch Integrated Computer Screen (ICS). When the Display On/Off Button is used to turn the display to "Off" prior to placing the vehicle in reverse, the backup camera rearview image will not appear on the display. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."

Risk: A rearview camera that does not display an image can reduce the driver's rear view, increasing the risk of a crash or injury.

Fix: Dealers will update the ICS software, free of charge. Owner notification letters were mailed July 27, 2023. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 23C14.

BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

Campaign #23V342000 · Dec 5, 2023

Issue: Ford Motor Company (Ford) is recalling certain 2020-2023 Explorer, Lincoln Aviator, and 2020-2022 Lincoln Corsair vehicles equipped with a 360-degree camera. The video output may fail, preventing the rearview camera image from displaying.

Risk: Loss of the rearview camera image can reduce the driver's rear visibility, increasing the risk of a crash.

Fix: Dealers will replace the 360-degree camera, free of charge. Owner notification letters were mailed November 10, 2023. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 23S23. This recall expands and replaces NHTSA recall number 23V-022. Vehicles previously repaired under 23V-022 will need to have the new remedy performed.

ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY

Campaign #23V626000 · Aug 9, 2023

Issue: Ford Motor Company (Ford) is recalling certain 2020-2022 Lincoln Aviator and Ford Explorer vehicles equipped with 3.0L PHEV engines. A manufacturing defect in one or more of the high voltage battery cells may result in an internal short circuit and battery failure.

Risk: Battery failure can cause a loss of drive power, increasing the risk of a crash. Battery failure can also increase the risk of a fire.

Fix: Dealers will perform a Battery Energy Control Module (BECM) diagnostic test and replace the high voltage battery pack, as necessary, free of charge. Owner notification letters were mailed on April 8, 2024. Owners may contact Ford customer service at 1-866-436-7332. Ford Motor Company's number for this recall is 23S53.

POWER TRAIN:DRIVELINE:DRIVESHAFT

Campaign #23V675000 · Jun 10, 2023

Issue: Ford Motor Company (Ford) is recalling certain 2020-2022 Explorer vehicles. The rear axle horizontal mounting bolt may fracture and cause the driveshaft to disconnect.

Risk: A disconnected driveshaft can result in a loss of drive power or a vehicle rollaway if the parking brake is not applied. Either of these scenarios can increase the risk of a crash.

Fix: Dealers will replace the subframe bushing and rear axle bolt. They will also inspect the rear axle cover for damage near the bolt hole location and replace with a new cover if any damage is found. Repairs will be performed free of charge. Owner notification letters were mailed January 19, 2024. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 23S55.

ENGINE

Campaign #24V598000 · Oct 8, 2024

Issue: Ford Motor Company (Ford) is recalling certain 2020-2022 Explorer vehicles equipped with the Police Interceptor Utility Package. In the event of an engine failure, engine oil and fuel vapor may be released into the engine compartment and accumulate near ignition sources such as hot engine or exhaust components, possibly resulting in an engine compartment fire.

Risk: An engine compartment fire increases the risk of injury.

Fix: Owners are advised to park and shut off the engine as promptly as possible upon hearing unexpected engine noises, or after experiencing an unexpected engine power reduction, or seeing smoke from the engine compartment. Dealers will update the Powertrain Control Module (PCM) software. In addition, dealers will inspect for connecting rod bearing failure and if necessary, replace the engine long block. All inspections and repairs will be performed free of charge. Owner notification letters were mailed August 15, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 24S52.

ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL

Campaign #24V635000 · Aug 23, 2024

Issue: Ford Motor Company (Ford) is recalling certain 2021-2022 Bronco, F-150, Edge, Explorer, Lincoln Nautilus, and Lincoln Aviator vehicles equipped with either a 2.7L or 3.0L Nano EcoBoost engine. The engine intake valves may break while driving, which can result in engine failure and a loss of drive power.

Risk: A loss of drive power increases the risk of a crash.

Fix: Dealers will perform an engine cycle test and replace the engine as necessary, free of charge. Owner notification letters were mailed July 3, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 24S55.

EQUIPMENT:OTHER:LABELS

Campaign #24V852000 · Aug 11, 2024

Issue: Ford Motor Company (Ford) is recalling certain 2020-2025 Explorer, Lincoln Aviator, 2020-2024 Escape, Lincoln Corsair, 2018-2024 F-150, Expedition and Lincoln Navigator vehicles. The air bag warning label may be missing from the dashboard. As such, these vehicles fail to comply with the requirement Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."

Risk: Without a label that shows the proper restraint usage guidelines, the occupants may have an increased risk of injury in the event of a crash.

Fix: Ford will mail owners the warning labels, free of charge. Owner notification letters were mailed December 19, 2024. Owners may call Ford customer service at 1-866-436-7332. Ford's number for this recall is 24C39.

SEAT BELTS

Campaign #25V093000 · Feb 14, 2025

Issue: Ford Motor Company (Ford) is recalling certain 2020-2021 Explorer and Aviator vehicles. The seat belt buckle anchor bolts at one or more seating positions may be improperly secured. Additionally, vehicles may have an improperly secured seat belt retractor anchor bolt and/or seat belt anchor bolt at the second-row center seating position, if equipped.

Risk: A loose seat belt or seat belt buckle may not properly restrain an occupant during a crash, increasing the risk of injury.

Fix: Dealers will inspect seat belt buckle anchor bolts in all seating positions. Additionally, dealers will inspect the seat belt retractor anchor bolt and seat belt anchor bolt at the second-row center seating position, if equipped. If loose anchor bolts are found, the affected seat components will be replaced. Repairs will be performed free of charge. Owner notification letters were mailed on June 5, 2025. Owners may contact Ford customer service at 866-436-7332. Ford's number for this recall is 25S09.

BACK OVER PREVENTION:SOFTWARE

Campaign #25V159000 · Mar 14, 2025

Issue: Ford Motor Company (Ford) is recalling certain 2020-2023 Explorer, Lincoln Aviator, and 2020-2022 Lincoln Corsair vehicles previously repaired incorrectly under recall number 23V-342. The video output may fail, preventing the rearview camera image from displaying.

Risk: Loss of the rearview camera image can reduce the driver's rear visibility, increasing the risk of a crash.

Fix: Dealers will update the Image Processing Module software, free of charge. Owner notification letters were mailed April 25, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S27.

POWER TRAIN:DRIVELINE:DRIVESHAFT

Campaign #25V166000 · Mar 14, 2025

Issue: Ford Motor Company (Ford) is recalling certain 2020-2022 Explorer vehicles previously repaired incorrectly under recall numbers 23V-199 or 22V-255. The rear axle horizontal mounting bolt may fracture and cause the driveshaft to disconnect.

Risk: A disconnected driveshaft can result in vehicle rollaway when the vehicle is placed in park without the parking brake applied. A disconnected driveshaft can also result in a loss of drive power. Either of these scenarios can increase the risk of a crash.

Fix: Dealers will update the powertrain control module (PCM) software, free of charge. Owner notification letters were mailed April 25, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S22.

SEATS:MID/REAR ASSEMBLY

Campaign #25V393000 · Jun 13, 2025

Issue: Ford Motor Company (Ford) is recalling certain 2020-2025 Aviator, and Explorer vehicles. The switch for the easy-entry second-row outer seats may bind or stick, resulting in the seats unlatching, folding, or sliding unexpectedly while driving.

Risk: A seat that moves unexpectedly may not properly restrain an occupant during a crash, increasing their risk of injury.

Fix: Dealers will inspect the second-row seat switch, and replace the bezel around the switch as necessary, free of charge. Owner notification letters were mailed August 7, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S67.

BACK OVER PREVENTION:SOFTWARE

Campaign #25V442000 · Jun 27, 2025

Issue: Ford Motor Company (Ford) is recalling certain 2018-2022 Transit Connect, 2019-2020 MKZ, MKX, Edge, Continental, F-150, Nautilus, Fusion, 2019-2023 Ranger, Mustang, 2020-2021 EcoSport, Expedition, Navigator, 2020-2022 Escape, F-250 SD, Corsair, 2020-2023 Aviator, Transit, 2020-2024 Explorer, 2021-2024 Bronco Sport, and 2022-2024 Maverick vehicles. A software error may cause the rearview camera to display a blank image, or the image may remain on the display after the backing event has ended.

Risk: A rearview camera that displays a blank image can reduce the driver's view behind the vehicle. A rearview image that continues to be displayed after the vehicle is shifted out of reverse may distract the driver. Both of these situations can increase the risk of a crash.

Fix: Dealers will update the rearview camera software, free of charge. Owner notification letters were mailed September 4, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S72.

FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Campaign #25V455000 · Jul 7, 2025

Issue: Ford Motor Company (Ford) is recalling certain 2021-2023 Bronco, Explorer, Lincoln Aviator, F-250 SD, F-350 SD, F-450 SD, F-550 SD, 2021-2022 Lincoln Navigator, Mustang, F-150, and 2022 Expedition vehicles. The low-pressure fuel pump may fail, which can result in an engine stall while driving.

Risk: An engine stall increases the risk of a crash.

Fix: Dealers will replace the low pressure fuel pump on super duty vehicles and update the powertrain control module (PCM) software on all other affected vehicles, free of charge. Interim notification letters notifying owners of the safety risk were mailed July 16, 2025. Second letters will be sent once the remedy is available, anticipated 2nd Quarter 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S75.

EQUIPMENT:ELECTRICAL:ENGINE BLOCK HEATER

Campaign #25V685000 · Oct 10, 2025

Issue: Ford Motor Company (Ford) is recalling certain 2016-2019 Lincoln MKC, 2016-2023 Explorer, 2019-2020 Fusion, 2019-2024 Ranger, 2020-2022 Lincoln Corsair, Escape, 2021-2024 Bronco, Bronco Sport, and 2022-2024 Maverick vehicles. The engine block heater may crack and develop a coolant leak, causing it to short circuit when the block heater is plugged in.

Risk: An electrical short circuit can increase the risk of a fire.

Fix: Owners are advised not to plug in their block heater until the vehicle is remedied. Dealers will replace the block heater, free of charge. Owners will also have a alternative option to replace engine block heater element with a threaded blanking plug, and remove the block heater electrical cord. Interim letters, notifying owners of the safety risk, were mailed December 3, 2025. Additional letters will be sent once the final remedy is available, anticipated September 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25SA4. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on October 15, 2025.

VISIBILITY:WINDSHIELD WIPER/WASHER:MOTOR

Campaign #26V117000 · Mar 3, 2026

Issue: Ford Motor Company (Ford) is recalling certain 2020-2022 Explorer, Escape, Lincoln Aviator, and Lincoln Corsair vehicles. The windshield wiper motor may fail and prevent the windshield wipers from operating properly.

Risk: Windshield wipers that fail to operate properly can reduce visibility, increasing the risk of a crash.

Fix: Dealers will inspect and replace the front wiper motors as necessary, free of charge. Interim letters, notifying owners of the safety risk, were mailed April 2, 2026. Additional letters will be sent once the final remedy is available, anticipated in October 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26S14. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on March 4, 2026.

BACK OVER PREVENTION:SOFTWARE

Campaign #26V123000 · Mar 3, 2026

Issue: Ford Motor Company (Ford) is recalling certain 2020-2022 Escape, Lincoln Corsair, 2020-2024 Lincoln Aviator, and Explorer vehicles. The image on the center display may flip or invert, resulting in an incorrectly displayed rearview image when the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."

Risk: An incorrectly displayed rearview image can reduce the driver’s view behind the vehicle, increasing the risk of a crash.

Fix: Dealers will update the accessory protocol interface module (APIM) software, free of charge. Owner notification letters were mailed June 23, 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26C11. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on March 5, 2026.

SEAT BELTS

Campaign #26V159000 · Mar 17, 2026

Issue: Ford Motor Company (Ford) is recalling certain 2020-2026 Explorer and Lincoln Aviator vehicles. The seat belt anchor bolts at the second-row outer seating positions may be improperly secured.

Risk: A loose seat belt buckle may not properly restrain an occupant during a crash, increasing the risk of injury.

Fix: Dealers will inspect the second-row outer seat belt lower anchor bolts and replace or repair them as necessary, free of charge. Owner notification letters were mailed March 30, 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26C18. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on March 19, 2026.

POWER TRAIN:AUTOMATIC TRANSMISSION

Campaign #26V402000 · Jun 24, 2026

Issue: Ford Motor Company (Ford) is recalling certain 2018-2021 Navigator, Expedition, 2020-2021 Explorer, Lincoln Aviator, and 2021 F-150 vehicles. The transmission park pawl may engage while the vehicle is in motion, resulting in park system damage.

Risk: Park system damage may result in a vehicle rollaway, increasing the risk of a crash.

Fix: Dealers will update the powertrain control module software, and inspect and replace any damaged transmission components as necessary, free of charge. Interim letters, notifying owners of the safety risk, were mailed July 10, 2026. Additional letters will be sent once the remedy is available, anticipated in April 2027. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26S48. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on June 26, 2026.

SEATS:MID/REAR ASSEMBLY

Campaign #26V451000 · Jul 14, 2026

Issue: Ford Motor Company (Ford) is recalling certain 2020-2027 Aviator and 2020-2026 Explorer vehicles. The switch for the easy-entry second-row outer seats may bind or stick, resulting in the seats unlatching, tipping, or sliding unexpectedly.

Risk: A seat that moves unexpectedly may not properly restrain an occupant during a crash, increasing the risk of injury.

Fix: Dealers will inspect and replace the bezel around the switch as necessary, free of charge. Interim letters explaining the safety risk are expected to be mailed July 27, 2026. Additional letters will be sent once the remedy is available, anticipated in January 2027. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26S52. This recall expands Recall 25V393. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on July 16, 2026.

Recall data refreshed Jul 26, 2026.

Essential maintenance

Critical for safety and preventing major damage

🛢️

Engine Oil & Filter

Every 7,500 mi

Replace synthetic-blend or full-synthetic Motorcraft oil per the IOLM, or every 7,500-10,000 miles. EcoBoost engines require full synthetic; Coyote 5.0L V8 specifies SAE 5W-30.

Estimated cost — typical U.S. ranges

Dealer

~$120–$160

Shop

~$85–$115

DIY

~$25–$55

Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.

🔄

Tire Rotation

Every 10,000 mi

Rotate tires every 10,000 miles, or with every other oil change. F-150 4x4 owners should rotate every 5,000-7,500 miles to even out drivetrain bias wear.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Often free at the shop where you bought the tires — worth asking before paying.

🛑

Brake Inspection

Every 10,000 mi

Inspect brake pads, rotors, and brake fluid level every 10,000 miles. Front pads on F-150 and Explorer typically last 40,000-60,000 miles.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.

🧪

Brake Fluid

Every 45,000 mi

Ford specifies brake fluid replacement on an inspection basis, but moisture testing every 3 years is recommended. Replace if reading exceeds 3% water content.

Estimated cost — typical U.S. ranges

Dealer

~$180–$200

Shop

~$125–$140

DIY

~$10–$25

DOT 3 or 4 — match the cap. Vacuum bleeders make this a one-person DIY.

Important maintenance

Keeps your vehicle running smoothly and efficiently

💨

Engine Air Filter

Every 30,000 mi

Replace the engine air filter every 30,000 miles. EcoBoost turbocharged engines are sensitive to airflow restriction — don't extend.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

5-minute job on most cars; the airbox lid usually has clips, no tools needed.

⚙️

Automatic Transmission Fluid

Every 150,000 mi

Ford 6R80, 10R80, and 8F transmissions use Mercon LV fluid rated 150,000 miles under normal service. Severe service (towing, plowing) drops this to 60,000 miles.

Estimated cost — typical U.S. ranges

Dealer

~$330–$500

Shop

~$235–$355

DIY

~$60–$180

Some sealed transmissions have no dipstick — fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.

🔩

Transfer Case Fluid (4WD models)

Every 60,000 mi

F-150 4x4 and Bronco 4x4: replace transfer case fluid every 60,000 miles. Use Motorcraft XL-12 — do not substitute generic transfer case fluid.

Estimated cost — typical U.S. ranges

Dealer

~$105–$140

Shop

~$75–$100

DIY

~$15–$40

AWD/4WD vehicles only. Easy drain-and-fill on most platforms.

🔧

Rear Differential Fluid

Every 100,000 mi

F-Series and Expedition: replace rear axle fluid every 100,000 miles, or 50,000 miles if towing. Limited-slip rear ends require friction-modifier additive.

Estimated cost — typical U.S. ranges

Dealer

~$150–$195

Shop

~$105–$135

DIY

~$20–$50

Drain plug + fill plug — straightforward DIY. AWD vehicles have two; budget for both.

⚡

Spark Plugs

Every 100,000 mi

Iridium spark plugs on Coyote 5.0L, EcoBoost 2.7L/3.5L, and 2.3L are rated 100,000 miles. EcoBoost engines: never exceed the interval — gap erosion causes coil failure.

Estimated cost — typical U.S. ranges

Dealer

~$285–$390

Shop

~$200–$275

DIY

~$25–$100

Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.

🌡️

Engine Coolant

Every 50,000 mi

Motorcraft Orange (Dex-Cool compatible) coolant: first change at 100,000 miles, then every 50,000. Older trucks with Yellow Motorcraft coolant: 50,000 miles throughout.

Estimated cost — typical U.S. ranges

Dealer

~$285–$330

Shop

~$200–$235

DIY

~$25–$60

Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.

Recommended maintenance

Extends the life of your vehicle and improves comfort

🌬️

Cabin Air Filter

Every 20,000 mi

Replace the cabin air filter every 20,000 miles. On F-150, located behind the glove box; on Escape and Explorer, accessed from the passenger footwell.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.

Known issues for this vehicle

What drivers and federal regulators have officially reported about the 2021 Ford Explorer.

Reported to NHTSA

Panoramic sunroof sunshade sagging and blocking rear view

UNKNOWN OR OTHER

28 NHTSA complaints · 2025-02 → 2026-05 (sample of 200 most-recent of 382 total)

“My car has 68,908 miles on it and the sunroof sunshade has drooped down now when I attempt to open it. When it does this it completely blocks the rearview window/3rd row seating which is a safety concern. There are no warning lamps at all for this issue. It sounds like it is…”
— Owner report, NHTSA ODI #11732529
“The sliding roof mechanism for the sunroof failed and droops into the backseat impairing vision. This can be triggered accidentally while driving causing zero rear visibility. This is part of the sun roof that is the shade keeping the sun out of the car. With extremely little…”
— Owner report, NHTSA ODI #11705249
“Sunshade has fallen off the tracks and the fabric is falling. This is a known issue amongst Ford Explorers with a sunroof; rear visibility is completely blocked. Ford requesting $1800 just to repair shade.”
— Owner report, NHTSA ODI #11729208
“Automatic roll up sun shade for the sunroof sags and does not retract anymore, causing visibility issues as it droops down. Car is out of factory bumper to bumper warranty, currently 52k miles, and the aftermarket warranty does not cover the shade. Ford quoted over $2000 for…”
— Owner report, NHTSA ODI #11679464

Read all complaints on NHTSA →

Transmission failure and hard shifting

POWER TRAIN

16 NHTSA complaints · 2024-07 → 2026-02 (sample of 200 most-recent of 382 total)

“Approximately 6 weeks ago, while driving at 30 -35 mph in residential area, vehicle started lurching/jolting, took to local dealership, nothing found, reported to Customer Service, instructed to write to FMC Consumer Affairs and am waiting on reply.”
— Owner report, NHTSA ODI #11690229
“Transmission clutch failure. As a result my 2021 ford explorer needs a new transmission.”
— Owner report, NHTSA ODI #11718529
“10 speed Transmission malfunction, needs replacing,”
— Owner report, NHTSA ODI #11668919
“Hard shifting”
— Owner report, NHTSA ODI #11636548

Read all complaints on NHTSA →

Rear axle bolt fracture

POWER TRAIN

14 NHTSA complaints · 2024-04 → 2026-04 (sample of 200 most-recent of 382 total)

“The contact owns a 2021 Ford Explorer. The contact stated while driving at an undisclosed speed, the rear axle bolt fractured. The contact stated that the failure occurred while driving on a busy highway. The vehicle was towed to the dealer; however, the vehicle was not…”
— Owner report, NHTSA ODI #11606086
“When given gas to move from a complete stop, vehicle lost all power. After vehicle lost all power to rear wheels, warning lights flashed on cluster. Manually moved vehicle to side of road and checked under SUV to see rear axle was at a unusual angle and later discovered rear…”
— Owner report, NHTSA ODI #11707797
“We received notification from Ford that there is a "rear axle bolt fracture" possible on our 2021 Ford Explorer and noted we were to contact our dealer to address. However when I reached out to the dealership (and then subsequently to Ford Customer Service) I was told that the…”
— Owner report, NHTSA ODI #11697796
“The contact owns a 2021 Ford Explorer. The contact stated that while driving at an undisclosed speed, the rear of the vehicle unexpectedly jolted, and there was a dragging sound coming from the rear. The vehicle was taken to an independent mechanic, where it was diagnosed and…”
— Owner report, NHTSA ODI #11729877

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Engine stall and loss of motive power

ENGINE

9 NHTSA complaints · 2024-05 → 2026-05 (sample of 200 most-recent of 382 total)

“The contact owns a 2021 Ford Explorer. The contact stated that while driving 70–75 MPH, the vehicle lost motive power and stalled. There were no warning lights illuminated. The vehicle was towed to the local dealer but was not diagnosed or repaired. The manufacturer was not…”
— Owner report, NHTSA ODI #11588607
“The contact owns a 2021 Ford Explorer. The contact stated that while driving 80 MPH, the power train warning light illuminated, and the vehicle stalled. The contact was able to exit the highway and the contact was able to pull over to the side of the road. The contact stated…”
— Owner report, NHTSA ODI #11638709
“Police car started to run rough at low speed. Stalled in middle of road. Scanned codes and code for Catalytic converter showed up along with misfires from numerous cylinders. Brought to dealer and was told needed plugs and a wire. Vehicle was returned and the same issue…”
— Owner report, NHTSA ODI #11709769

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Park engagement and rollaway after recall remedy

POWER TRAIN

4 NHTSA complaints · 2024-07 → 2026-02 (sample of 200 most-recent of 382 total)

“Part 573 Safety Recall Report 23V-675 The recall that is has been applied causes safety issues with the car when driving forward or in reverse. When putting the car into park the parking break auto applies. Now that is great however.. When putting the car into reverse or drive…”
— Owner report, NHTSA ODI #11605306
“Recently purchased a vehicle that had just previously got a recall 23S55 3 weeks prior. Upon receiving the vehicle there was a slight clicking noise when going into gear. i took the vehicle to a ford dealer and they investigated the recall remedy was installed improper from the…”
— Owner report, NHTSA ODI #11717765
“I had my car towed to mechanic because transmission would go into park. He ran a diagnostic and found multiple codes (mechanics Bill and list of codes he found will be included) relating to transmission. He searched on a data base he uses Shopkey.pro(copy of recall will be…”
— Owner report, NHTSA ODI #11598328

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Backup camera display failure

BACK OVER PREVENTION

6 NHTSA complaints · 2024-06 → 2025-08 (sample of 200 most-recent of 382 total)

“Been dealing with this backup camera blue screen for the last year. I pay too much money for this not to be working. Someone came out yesterday to fix it but it's still doing the same thing.”
— Owner report, NHTSA ODI #11617010
“Backup camera has failed again aftyer being programmed twice and replaced once under recall's. But now it's out completely. It has worked off and on since new.”
— Owner report, NHTSA ODI #11670781

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Note: NHTSA also opened 2 defect investigation(s) on this vehicle that closed without action.

Issues on other model years

  • 2018 Ford Explorer →
  • 2019 Ford Explorer →
  • 2020 Ford Explorer →
  • 2022 Ford Explorer →
  • 2023 Ford Explorer →
  • 2024 Ford Explorer →

Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Jul 27, 2026. Investigation data refreshed Jul 27, 2026.

We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.

Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.

How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.

This maintenance schedule for the 2021 Ford Explorer reflects Ford's published service intervals and the Intelligent Oil-Life Monitor system. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.

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