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
2021 Ford Edge SE, 4WDSECTION Symptom Chart
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
| Symptom | Possible Sources | Action |
|---|---|---|
| All auxiliary switch controlled components are inoperative. | Refer to the pinpoint test. | If No
auxiliary switch ON indicators operate, GO to Pinpoint Test B If the auxiliary switch ON indicators operate, GO to Pinpoint Test A |
| Some , but not all, auxiliary switch controlled component are inoperative. | Refer to the pinpoint test. | GO to Pinpoint Test A |
| All auxiliary switch ON indicators are in operative. | Refer to the pinpoint test. | GO to Pinpoint Test B |
| Some , but not all, auxiliary switch ON indicators are inoperative. | Upfitter (auxiliary) switch assembly | INSTALL a new auxiliary switch assembly REFER to: Auxiliary Switches . |
| To install the upfitter switches on a vehicle that was not originally equipped from the factory. | None | For truck body builder advisory service bulletins, REFER to www.fleet.ford.com. |
RENDER: 1.0x
NO RELATED
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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.