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June 24, 2021 Service bulletin

In some affected vehicles, it may be possible fo the Powertrain Control Module to enter a non-recoverable...

Ford technical service bulletin 21B37 for 2021 Ford F-150.

Bulletin number
21B37
Component
Power train: automatic transmission
Summary
In some affected vehicles, it may be possible fo the Powertrain Control Module to enter a non-recoverable reset condition at key-on when the software detects a low oil level AND the oil life remaining is between 5-20%. When the PCM is in the reset condition, the driver may experience a condition whe the engine will not attempt to turn on when the driver turns the key or presses the "engine start" button.

Owners of these vehicles have filed 329 complaints in the transmission category.

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