What happen when in the panel the light shows the engine?

Typically, when the computer code scan is complete it will display the word 'done'. Generally it would be preceeded by any "P" error codes if they exist.

You didn't happen to cycle the ignition key 3 times to ON before it showed up did you?

The VSC and Traction Control require the engine to be at 100% in order to function correctly. As a fail safe these systems a disabled anytime the engine computer detects a fault. When they are disabled the lights are illuminated to let you know that they will no longer function. The true problem is with the check engine light. The engines computer has detected a problem with a sensor or system that it monitors or controls. You have three options to get the codes that will help you determine what's wrong 1. You can buy an inexpensive code reader for about $50 and pull the codes yourself. 2. You can call your local parts store to see if they can pull codes for you. 3. You can visit your local repair shop or dealer and have them perform a diagnosis. There is usually a set fee. They will pull codes, run some tests, and pinpoint the problem for you. Let me know what you figure out.

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my toyota wish2003 check engine light some time show out,what shall i do

The service engine soon could be an indicator that you need to have minor maintenance done in the near future. I had a Grand Am that the service engine light would turn on when I was getting close to needing an oil change. You might check your owners manual for an exact reason as to why it turns on.

Basically, it means the check engine warning light didn't light up when it should. Perhaps a burned out bulb?

Every vehicle has a "system check" that happens every time you turn the key on. Most people don't know it is happening right before thier eyes. So if you go out and get into your car in the morning and you turn the key to "on" but then don't go the rest of the way to the "start" position there are several warning lights on. The check engine light is one of them. All the system is doing is running power through the light to show it is functional.

It doesn't mean there is something wrong, it is just showing that an error "can" be displayed if an error existed by the light being on. Try it next time. Turn the key on but dont start the engine. If your check engine light is off, then that is what they stated in the report.

The Check Engine light has nothing to do with changing the oil. The light is on because there is a problem with the emissions system. Even if you reset the light it will just come back on unless the problem causing it to come on is repaired. You will need to have the ECU scanned with an OBD2 scan tool. That tool will retrieve the code that has been set by the ECU. The code will tell you what part is being effected, but not necessarily what part or parts are defective. To determine that takes training, experience, and diagnostic skills. I suggest you seek professional help. If the engine is running fine there is no hurry but if it is not running as it should, then do not put this off.

try resetting the service lights

try pulling the plug out and putting a very small dab of loctite thread locker on it and see if this stops the problem.

Have your charging system checked,sound's like it is over charging.

I took my car to my mechanic. He did a diagnostic circuit test on the engine and then replaced the distributer ignition module and camshaft and crankshaft position sensors.