Flash: Powertrain Control Module (PCM) Updates
Fiat technical service bulletin 18-029-20 REV. A for 2019 Fiat 500X.
- Bulletin number
- 18-029-20 REV. A
- Component
- Electrical system
- Summary
- Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DiagnosticTrouble Code (DTC) has been set:U0100 - Lost Communication With ECM/PCM. In addition, the customer may also experience the following: The vehicle will not crank if the ECM gets hotter than 50 °C (122°F).
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