Where is the air suspension reset switch for a ford expedition 2003?

There isn't a single, dedicated "air suspension reset switch" in a 2003 Ford Expedition. The system self-regulates. If you're experiencing air suspension problems, what you likely need to do is diagnose the *cause* of the problem, not reset a switch. Problems might include a leak in an air spring, a faulty air compressor, or a malfunctioning height control module.

To address suspension issues, you'll need to:

* Check for leaks: Inspect the air springs and lines for any visible damage or leaks. You might hear hissing sounds.

* Check the air compressor: Listen for the compressor running when you start the vehicle. If it's not running or running constantly, it could be faulty.

* Consult a diagnostic tool: A professional mechanic can use an OBD-II scanner to read codes from the vehicle's computer. This will help pinpoint the problem's source.

* Check the fuses and relays: Verify that the fuses and relays associated with the air suspension system are intact and functioning correctly.

Instead of looking for a reset switch, focus on diagnosing the underlying issue. Attempting to "reset" something without knowing the problem could be pointless or even harmful. A qualified mechanic is the best resource for diagnosing and fixing Ford Expedition air suspension problems.