Question about 2000 Toyota Corolla

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Why do the sensor lights come on so frequently on Toyota cars

The sensor lights come on so often and usually don't need immediate attention. Why does this happen at all unless there is a problem.

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  • kmcintyre1 Feb 20, 2012

    I do understand that there are necessary sensors, but often when mine have gone on, a mechanic assures me that there is no problem.
    One man told me to add fuel injector fluid when I fill up every once in a while. Has anyone heard of that?

  • kmcintyre1 Feb 20, 2012

    Often the sensors are not accurate when they go off.

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There are many sensors on the car, engine ,transmission, antilock brake and traction control depending on the model, some sensor failures can cause driveability problems and some may be emission control related issues which may not affect performance, the sensors are there to let the computer know when there is a problem which usually turns the check engine light on or one of the other systems, on todays comoputer controlled cars these sensors are absolutely necessary for emission controls and genral performance and safety issues.

Posted on Feb 17, 2012

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