Ford Explorer 2021 — technical service bulletin
Bulletin 21B18 · NHTSA communication 10189753 · issued Mar 30, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2021
model years
2
vehicle entries
Official summary
Certain 2021 Model Year Explorer/Aviator All-Wheel-Drive Vehicles Equipped with 3.0L Engines Engine Assembly Replacement All of the affected vehicles, an oversized right-hand exhaust camshaft journal was installed in the engine assembly. This may result in a misfire and low compression condition. The check engine light will be illuminated
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.