However, before replacing the relay, you should troubleshoot to confirm it's the actual problem. Here's a breakdown of how to approach this:
1. Identify the Relay:
* Consult your owner's manual: This is the best place to start. It should show the location of the relay box (usually under the hood) and a diagram showing which relay controls the air suspension. Often, the relays are labeled, but sometimes you'll need the diagram.
* Online resources: Websites like Ford forums (as Lincoln is a Ford brand) may have pictures and discussions about the air suspension relay location for your specific year Navigator.
2. Test the Relay:
* Visual Inspection: Check the relay for any obvious physical damage (burns, cracks, loose connections).
* Swap with a known good relay: This is the most effective test. Find a relay of the same amperage and type (it'll likely be a standard automotive relay) from another less critical circuit in your fuse box. Carefully swap them, being sure to note which relay went where. If the air suspension starts working, you've found your faulty relay. If it doesn't, the problem lies elsewhere.
* Using a multimeter (advanced): You can test the relay's continuity and switching behavior with a multimeter, but this requires some electrical knowledge. Online resources can guide you through this, but be cautious when working with car electrical systems.
3. Replace the Relay:
* Purchase a replacement: Buy a new relay from an auto parts store. Make sure to get the correct amperage and type. Provide the year, make, and model of your Navigator when ordering. You might be able to find the part number online as well.
* Installation: Carefully remove the faulty relay and install the new one in the same location, ensuring it's securely seated.
4. Further Troubleshooting (if the relay replacement doesn't fix the problem):
If replacing the relay doesn't solve the issue, the problem might be:
* Air compressor: The compressor might be failing.
* Air suspension lines: Leaks in the air lines can cause problems.
* Air suspension struts/bags: These can fail and need replacing.
* Air suspension control module: This is a more complex and potentially expensive component.
* Wiring issues: A wiring problem could be present between the relay and other components.
Important Safety Precautions:
* Disconnect the battery's negative terminal before working with any electrical components in your vehicle. This will prevent accidental short circuits and protect you from electric shock.
* Use caution when working near hot engine components.
* If you're not comfortable working on your car's electrical system, it's best to take it to a qualified mechanic. Air suspension systems are complex, and improper repairs can lead to further damage.
Remember, this is general guidance. Always consult your owner's manual and seek professional help if needed. Incorrectly diagnosing and repairing your air suspension system can be costly.
