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Ford TSB #21B17
2021 Ford Explorer
TSB Document:
Affected 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.
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