It is the same as turning any other warning light you need a diagnostics computer
{your car requires a service) when the mechanic has completed the work he will re set your warning light.
A spanner
The shift light on a Vauxhall Corsa is a light that indicates whether or not you're driving in low gear. It is typically located right on the dash.
this also illuminates when brake fluid is low either your brake pads are worn out or you have a leak
Red
Under The Steering Wheel
Turn light switch clockwise
this is service warning light, informing you car is due a service
How to rest the service light on a vauxhall insignia
check your door contact
May depend on model, especially if an early model. My Corsa has two.
This type of light is generally warning you it is time for a service. However, do look in your manual in the glove box to be sure.