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.
2004 Lincoln Aviator AWDFACTORY OEM SERVICE PROCEDURE
System Tests: Notes
CAUTION:
When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See appropriate COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.
SYMPTOM INDEX
| Symptom | Perform Test |
|---|---|
| Battery Voltage Is Discharged Or Battery Voltage Is Low | A |
| Warning Indicator Is On With Engine Running, System Is Not Charging | B |
| System Overcharges | C |
| Warning Indicator Is On With Engine Running, System Is Charging | D |
| Warning Indicator Is Off With Ignition On, Engine Not Running | E |
| Warning Indicator Flickers Or Operates Intermittently | F |
| Generator Is Noisy | G |
| Radio Interference | H |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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