How to Reset the Cabin AC Filter Alert on a 2005 Lincoln Ls V8
- 1). Insert the key and turn the ignition to "Run" or "On." It is not necessary to start the engine.
- 2). Press the "Status" button above the radio until the system display changes to "AC Filter."
- 3). Press and hold "Reset" above the radio. The system will beep and the "AC Filter" display resets to "100%."
