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.
2005 Lincoln LS 3.0 SFACTORY OEM SERVICE PROCEDURE
Section 1281 (Interior Lighting System)
WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Description And Operation
- Diagnosis And Testing
- Interior Lighting
- Special Tool(s)
- Principles of Operation
- Inspection and Verification
- DTC Tables
- Symptom Table
- Pinpoint Tests
- Pinpoint Test A: The Courtesy Lamps Do Not Illuminate With A Door Open
- Pinpoint Test B: The Courtesy Lamps Do Not Illuminate From The Instrument Panel Dimmer Switch
- Pinpoint Test C: The Interior Courtesy Lamp(s) Are Inoperative
- Pinpoint Test D: The Puddle Lamp(s) Are Inoperative
- Pinpoint Test E: The Luggage Compartment Lamp Is Inoperative/Always On
- Pinpoint Test F: The Interior Courtesy Lamps Stay On Continuously
- Pinpoint Test G: The Puddle Lamps Stay On Continuously
- Pinpoint Test H: All The Demand Lamps Are Inoperative
- Pinpoint Test I: An Individual Demand Lamp Is Inoperative
- Pinpoint Test J: The Battery Saver Does Not Deactivate After Time-Out
- Pinpoint Test K: The Ambient Lighting Is Inoperative - Fusion/Milan
- Pinpoint Test L: The Ambient Lighting Does Not Cycle Through All Color Combinations - Fusion/Milan
- Pinpoint Test M: The Ambient Lighting Is Inoperative - MKZ
- Pinpoint Test N: The Ambient Lighting Does Not Cycle Through All Color Combinations - MKZ
- Pinpoint Test O: The Ambient Lighting Does Not Cycle Through Brightness Settings - MKZ
- Pinpoint Test P: DTC U0140 - Lost Communication With Smart Junction Box (SJB)
- Interior Lighting
- Removal And Installation
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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