OBD diagnostics · purchase protection

2021 Ford Explorer
Common Problems & Inspection Guide

Verify baseline vehicle system stability data. Learn what to check on the physical vehicle computer before signing a bill of sale.

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Platform Heritage

The Ford Explorer is a range of SUVs manufactured by the Ford Motor Company since the 1991 model year. The first five-door SUV produced by Ford, the Explorer, was introduced as a replacement for the three-door Bronco II. As with the Ford Ranger, the model line derives its name from a trim package previously offered on Ford F-Series pickup trucks. In 2020, the Explorer became the best-selling SUV in the American market. Currently in its sixth generation, the Explorer has featured a five-door wagon body style since its 1991 introduction. During the first two generations, the model line included a three-door wagon (directly replacing the Bronco II). The Ford Explorer Sport Trac is a crew-cab mid-size pickup truck derived from the second-generation Explorer. The fifth and sixth generations of the Explorer have been produced as the Ford Police Interceptor Utility (replacing both the Ford Crown Victoria Police Interceptor and the Ford Police Interceptor Sedan). The Explorer is slotted between the Ford Edge and Ford Expedition within North America's current Ford SUV range. The model line has undergone rebadging several times, with Mazda, Mercury, and Lincoln each selling derivative variants. Currently, Lincoln markets a luxury version of the Explorer as the Lincoln Aviator. For the North American market, the first four generations of the Explorer were produced by Ford at its Louisville Assembly Plant (Louisville, Kentucky) and its now-closed St. Louis Assembly Plant (Hazelwood, Missouri). Ford currently assembles the Explorer alongside the Lincoln Aviator and the Police Interceptor Utility at its Chicago Assembly Plant (Chicago, Illinois).

Source: Wikipedia intro extract · as of Jun 19, 2026

Key facts for this model year

386NHTSA owner complaints
24Safety recalls on file
74Top issue reports · Power Train
$0Typical OEM recall remedy cost to you

~8.0k average monthly buyer searches in the US (google ads data · as of Jun 19, 2026). Run a MotoMetrics scan for your VIN to see live repair exposure.

Verify the data — open primary sources · as of Jun 19, 2026

System Defect Summaries & Field Data

Active safety recalls on file: 24 (source: NHTSA Recalls API · as of Jun 19, 2026)

Top NHTSA complaint categories

Recent recall summaries

Campaign 21V870000 · SUSPENSION:REAR · API record

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.

Campaign 20V788000 · ENGINE · API record

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.

Campaign 21V735000 · BACK OVER PREVENTION:SOFTWARE · API record

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.

Campaign 21V652000 · AIR BAGS:SIDE/WINDOW:CURTAIN · API record

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".

Campaign 23V022000 · BACK OVER PREVENTION: SENSING SYSTEM: CAMERA · API record

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.

YouTube voice themes below are research hints only — verify against NHTSA data before citing.

Search demand cross-check: ~7,950 avg monthly intent searches (source: google ads data · as of Jun 19, 2026)

On-Site Ford Explorer Pre-Purchase Checklist

  1. Verify OBD-II readiness monitors are complete (not recently cleared) using a full protocol scan.
  2. Compare dashboard mileage to ECU-stored odometer modules where accessible.
  3. Pull permanent and pending DTCs — not only stored codes visible on the dash.
  4. Inspect systems related to POWER TRAIN (NHTSA complaint cluster — verify during test drive and PPI).
  5. Inspect systems related to UNKNOWN OR OTHER (NHTSA complaint cluster — verify during test drive and PPI).
  6. Inspect systems related to BACK OVER PREVENTION (NHTSA complaint cluster — verify during test drive and PPI).
  7. Inspect systems related to ENGINE (NHTSA complaint cluster — verify during test drive and PPI).
  8. Inspect systems related to ELECTRICAL SYSTEM (NHTSA complaint cluster — verify during test drive and PPI).
  9. Confirm recall remedy completed for SUSPENSION:REAR (campaign 21V870000).
  10. Confirm recall remedy completed for ENGINE (campaign 20V788000).
  11. Confirm recall remedy completed for BACK OVER PREVENTION:SOFTWARE (campaign 21V735000).
  12. Run a MotoMetrics on-site scan for Ford Explorer before signing the bill of sale.

Alternative Inferences & Cross-Shopping Matrix

Adjacent model years for this nameplate and equivalent footprints shoppers compare across brands.

Generational cohorts

2019 Ford Explorer 2018 Ford Explorer 2016 Ford Explorer

Class competitors

2019 Toyota Highlander 2021 Honda Pilot 2020 Jeep Grand Cherokee

Vehicle health varies wildly by individual history. Aggregate recall and complaint data cannot tell you whether the specific car on the lot had its monitors cleared or its odometer rolled back. Verify the physical or digital scan before you sign a bill of sale.

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