Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Symptom Chart: Auto-Start-Stop System
2021 Ford Edge SE, 4WDSECTION Symptom Chart: Auto-Start-Stop System
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .
| Condition | Possible Sources | Actions |
|---|---|---|
| Auto-Start-Stop System is inoperative or does not operate correctly | One or more required criteria required for Auto-start-stop operation has not been met. | REFER to ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID) for proper system operation. |
| Electronic Control Modules | RETRIEVE all Continuous Memory Diagnostic Trouble Codes (CMDTCs). For PCM Diagnostic Trouble Codes (DTCs), REFER toPCM DTC Chart . For BCM Diagnostic Trouble Codes (DTCs), REFER to BCM DTC Chart For all other Diagnostic Trouble Codes (DTCs), REFER to: Diagnostic Trouble Code Charts . |
|
| Vehicle Battery | Refer to ENGINE CONTROLS - SYMPTOM CHARTS (EXCEPT DIESEL & HYBRID) | |
| Auto-Start-Stop System cannot be disabled by driver | Wiring, terminals or connectors Auto-start-stop disable switch FCIM |
Refer to Auto-Start-Stop System
for schematic and connector information. REFER to BCM DTC Chart Refer to the appropriate Information and Entertainment System article for the procedure. |
| All Other concerns | -- | Refer to Engine Controls - Symptom Charts (Except Diesel & Hybrid) |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.