It depends on:
The light is NOT a low oil light. It is a low OIL PRESSURE light. You can drive it until the engine seizes. Of course internal engine damage will start to occur as soon as the light comes on and you have no oil pressure if you continue to drive the vehicle.
When your mileage hits the factory preset mileage for oil cange the light comes on to tell you to change the oil.Do it is worth it in the long run.
That varies with the problem. Could be immediate, or could take a week.
If the light is not flashing you can drive it until you can have it repaired. If the check engine light is flashing, park it. Otherwise you will do catastrophic damage to the catalytic converter costing several hundreds of dollars to replace.
The light will stay on until the trouble code is cleared from the computer. If you don't have a code reader that can clear the code, disconnect your battery for several minutes, then hook it back up. This clears the computers memory. If the light comes back on, you have another problem.
Yes , as long as your oil pressure and engine temperature are fine . The check engine light comes on when something is effecting the emissions of the vehicle . Of course you may not be getting as good gas mileage so it's best to have it looked at
Get somebody to read the codes. there is a speed sensor that has to be replace in your vehicle and that is why the servie engine soon light come on because it is aware of the problem when the speed is jumping around.
Switch on the ignition key but don't start the engine. A small grommet is located in the plastic shield over the instrument panel, at the bottom. Unplug it, take a long metal pin and push it through the hole so that it presses the little button between the rpm meter and the odometer. This will reset the counter. This light comes on every 100.000 km in order to remind the owner to change the timing belt.
It all depends on why the light is on and what the problem is. If the engine is running great and you see no loss of power or MPG then you do not have to rush to get it repaired. But do get it looked into within the next few months.
Pulling the code that has been sent to the computer (which happens when your check engine light comes on) will tell you many things about your question above and may also answer that question. I would suggest starting there.
it has a light that comes on to tell you when to change gears in a manual car, really just for show and the light can be adjusted to come on at whatever rpm you desire as long as the car can rev as high as it is set before the revs stall. in reality you change gears by ear and not even by looking at the taco let alone a light.
As long as it remains in the vacuum in the vacuum, the speed of the light doesn't change at all.