How do i reboot a car's computer when the check engine light comes on?

I drive an '07 chevy trailblazer. the oil was changed a day ago and a few hours later the check engine light came on. one time the mechanic did a reboot of pressing the brake 3times. i want to know if anyone knows this rebooting procedure and how to do it. really don't feel like going all the way to the dealer for a simple fix. please helpHow do i reboot a car's computer when the check engine light comes on?If it is indicating a transient fault (a fault that does not keep happening) it will eventually re-set itself over the course of a few drive cycles. The most common cause for the check engine light to come on in modern vehicles is someone not tightening the gas gap enough to seal. If the cap doesn't seal, it will trigger the check engine light. This is usually resolved by tightening the gas cap and just waiting a couple days.



Alternately, you can have the codes read using a code reader to find out why the light came on in the first place. Many places like Auto Zone or Pep Boys will read the codes on your car for free.



I do not recommend just re-setting it blindly. It came on because a fault was detected and at the very least you should find out why it came on before you re-set the light.How do i reboot a car's computer when the check engine light comes on?The thing with the brake is just to turn off the oil change light. The check engine light can only be turned off by plugging in a scan tool and using it to clear the codes and shut off the light or depending on what the trouble was if it does not occur again within a preset number of starts it may shut itself off if the problem is gone.How do i reboot a car's computer when the check engine light comes on?if the light comes on its not a simple fix, when the light comes on it means there is something wrong with your car.



you can buy a device or go to autozone and get the codes read to see what the problem is, and with that same device you can erase the light.



but no point in doing that because its gonna keep on coming back if your car has a problem.