Answer to 1st., if your light does not come on then, the bulb went out and believe me, it will save you 40 dollars to do a 5 minute job your self. all you need are screws drivers, and pluck the mount off and the bulbs will be behind the speedometer, and take 1 out, bring it to ur car shop, and get the same size back and replace.
Ans2. if it does not come out check for any coolant, or oil leak. if theres no leak make sure everything on the car is well closed.
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If it is the check engine light. You need either a code reader or scanner to do it. If it is just the sevice light, then turn the key on (don't start) press the fuel/gas pedal three times slowly with in five seconds. the light will flash. When it stops, turn it off. It's reset.
You have to go to a repair shop or find someone with a code reader to retrieve any problem codes from the computer. Chances are a sensor is damaged or has picked up an issue and sent the message to the computer. The computer is now telling you that there is a problem but you won't know what the problem is without a code reader which connects under the dash just below the steering wheel (or close by).
you have service or check engine light tunr on, will need to scabbed
the PCM (Powertrain Control, Module) to know exactly what fault code is
stored there. With this code number could send you additional details to
solve it. Some Autozone or Autoshops with scanner reader codes make
this job for free (sometimes).
Hope this helps and just keep in mind that your feedback is important
and I'll appreciate your time and consideration if you leave some
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When the Check Engine light/Service Engine Soon is turned on the computer control unit (called the PCM) has sensed a fault in the electronic controls of the engine/powertrain and/or the emission control system. When this happens you will seldom feel the car engine run any different. There are about 200 possible faults that turn the Check Engine light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen and Autozone parts stores do this testing for free.
The "service" engine light is on for a reason, the On Board Diagnostic (OBD) is sensing a problem with some part of the car. The service light will stay on until the problem is resolved. It is unlikely that the problem will resolve by itself and so it needs human intervention. You or a mechanic can hook up an OBD code reader and determine what code(s) is causing the engine light to illuminate. If you want to do it yourself, a simple code reader can be purchased for about $100+, you usually get what you pay for. Also, some auto part stores offer to hook up their code reader in hopes that you'll purchase the repair parts from them. Once the problem is determined, it can be repaired, and the car should turn the service light off. It is also possible to turn off the service light with the OBD code reader, but this is not advisable for the novice to do. For more help, contact me again at FixYa and I will be glad to assist.
Even a loose fuel cap or distributor cap can bring up the light . Without codes it will be like shooting in the dark to identify why it is light up. Any fault , anywhere in the car can cause the engine light to come on. Unless you face any problem in your car dont break your mind over that.
Start with code diagnostics and interpretation. You can do this as a free service at most national auto parts chains such as Auto Zone or Advance. Use the OBD II reader. They will assist! Good Luck! I hope you find this to be very helpful!