In all of the affected vehicles, the installed high-output alternator and powertrain control module (PCM)...
Ford technical service bulletin 21B17 for 2021 Ford Explorer.
- Bulletin number
- 21B17
- Component
- Electrical system
- Summary
- In all of the affected vehicles, the installed high-output alternator and powertrain control module (PCM) calibration were not aligned. A mismatch between the alternator and PCM calibration could cause idle control issues such as engine speed fluctuations, which may cause customer dissatisfaction.
Owners of these vehicles have filed 48 complaints in the electrical category.
Vehicles covered
- Ford Explorer 2021 2021
VIN decoder
See the problems and recalls for an exact car
Buying a used Ford Explorer?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history