Go to Auto Zone, they have a computer they can plug into the engine and it will tell you what is wrong, they will do it for free.
As specified prior go to Auto Zone store, they check it for free.
why service engine soon light on 1999 mustang
The Service Vehicle Soon indicator is usually a light bulb, headlight, or something to do with the vehicle. The Service Engine Soon indicator is anything that could be wrong with the Engine. Some computers can read codes for either, but some computers can only read codes for the Service Engine indicator.
The service indicator light, in your Mercedes ML 270, can be reset by holding in the engine oil life button. The engine oil life will go to 100 percent. The service indicator light should go off.
To reset the service indicator on a VW Polo, turn on the ignition without starting the engine. Press the gas pedal three times within 10 seconds. After that, turn off the ignition and start the engine to confirm that the service indicator has been reset. If it doesn’t reset, repeat the procedure.
To reset the service indicator on a 2008 Mercedes CLK 350, turn the ignition key to the "On" position without starting the engine. Press the gas pedal fully three times within five seconds. After this, turn the ignition off and then start the engine to confirm that the service indicator has been reset. If the indicator remains, repeat the process.
Will a 1998 3.8 mustang engine fit in a 2000 Mustang 3.8 engine?
A mechanic can reset the service engine soon light on a 1999 Mustang GT. If the light continues to stay on after visiting a mechanic unplugging the battery for a few minutes may get it to stay off.
To reset the service indicator on a 2001 Audi A3, turn the ignition on without starting the engine. Press the gas pedal fully three times within five seconds. After doing this, turn off the ignition and then start the engine to ensure the service indicator has been reset. If the light remains on, repeat the process.
If the parking brake isn't on , check the brake fluid level in the brake master cylinder in the engine compartment and see if it is low
you need to have the check engine/service engine soon fault codes read to determine what the fault is.
To switch off the service indicator on a 2008 Renault Clio, turn the ignition key to the "On" position without starting the engine. Press the trip reset button on the dashboard until the service indicator begins to flash. Once it starts flashing, release the button, and then press it again until the indicator turns off. This should reset the service light.
To reset the service indicator on a 2001 Renault Megane Scenic, turn the ignition key to the "On" position without starting the engine. Press and hold the trip computer button (often located on the stalk or dashboard) until the service indicator resets. Release the button, and then turn off the ignition. When you restart the vehicle, the service indicator should be cleared.