If you replaced the air bags with coil springs how do turn off suspension light on a 2000 Lincoln town car?

You can't simply replace airbags with coil springs and expect the suspension light to go off. The system is designed to work with air springs; replacing them with coil springs fundamentally alters the suspension's operation and creates a mismatch between the car's computer and the reality of its suspension. The suspension control module (SCM) will continuously detect this mismatch and keep the light on.

To turn off the light, you'd need to either:

1. Reinstall the air springs: This is the only guaranteed way to resolve the problem and make the system function as designed.

2. Bypass the system (not recommended): You could potentially disconnect the sensor(s) that trigger the light, but this is a dangerous workaround. The light is there for a reason—it indicates a problem that could affect the car's handling, stability, and safety. Ignoring it could lead to issues you're unaware of.

3. Use a scan tool to clear the code: A scan tool might clear the code temporarily, but the underlying problem (incorrect suspension components) will likely cause the light to return.

In short, converting a car designed for air suspension to coil springs is a significant modification requiring extensive mechanical and electrical expertise. It's not a simple plug-and-play swap. Trying to fool the system by turning off the light without fixing the underlying cause is unsafe and potentially illegal. If you want coil springs, you'd need to source the correct components (springs, struts, possibly other parts) and replace the entire system appropriately, possibly requiring significant fabrication work. Even then, you'll likely need professional help to properly manage the electrical aspects and ensure safe operation.