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 owners manual and 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 to PCM 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 |
| 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.