2004 Mercury Mountaineer Owner's Manual - Page 10

Instrument Cluster Instrument Cluster WARNING LIGHTS AND CHIMES Standard instrument cluster Optional instrument cluster Warning lights and gauges can alert you to a vehicle condition that may become serious enough to cause expensive repairs. A warning light may illuminate when a problem exists with one of your vehicle's functions. Many lights will illuminate when you start your vehicle to make sure the bulb works. If any light remains on after starting the vehicle, have the respective system inspected immediately. Service engine soon: The Service SERVICE engine soon indicator light ENGINE illuminates when the ignition is first SOON turned to the ON position to check the bulb. Solid illumination after the engine is started indicates the On Board Diagnostics System (OBD-II) has detected a malfunction. Refer to On board diagnostics (OBD-II) in the Maintenance and Specifications 10 2004 Mountaineer (mnt) Owners Guide (post-2002-fmt) USA English (fus)