The answer to that question depends on what year and the specific light that is coming on. When a service engine light comes on, it is the powertrain control module telling you that there is a concern that may effect your emissions control system. It is not just a matter of turning the light off, becaust chances are that the light will come back on if the concern is not resolved. Your best option is to get a professional to check for "codes". These codes will direct you to the possible cause of the service engine light. I hope this helps and good luck.
service check ?
On a 2003 Lincoln Navigator : The check engine light / service engine soon light is a drawing of an engine located directly under the center of the tachometer
unplug your car battery
A person needs to pay attention to their warning lights. If a service engine light is flashing, this means that there is a problem within the engine.
Maybe 2 separate problems--hae vehicle scanned by a shop that has an ABS scanner
It is important to pay attention to the warning lights on a car. To reset a service engine light on a car, a person must fix the problem causing the light to go off.
It has a " service engine soon " warning light that illuminates when the engines emission control system requires service and for a few seconds when the ignition key is in the run position before starting the engine . It is located directly below the " door ajar " warning light , just to the left of the fuel gauge
it is a warning light of course
Needs a Tune up
Put some oil in the engine. This warning light means your oil level is low.
You can reset your 2004 Lincoln Town Car service engine light by scrolling to the oil life display. Hold the scroll button in until the oil life goes to 100 percent.
It is important to pay attention to the warning lights in a car. The Service engine light means something is wrong with the engine and once it is taken care of, it will turn off on its own.