How do you turn off service warning light for vauxall corsa sxi?

with the ignition off, put your foot on the brake pedal while holding in the tripometer button (on dash) (button by milage)THEN SWITCH IGNITION ON! WHILE HOLDING BREAK PEDAL AND TRIPOMETER BUTTON DOWN STILL, it should come up with 20,000 which is what the service should be (every 20,000 miles) it should turn off the service warning light. on my corsa c sxi 1.2 i think it just said "INSP" every time you swithed the ignition on. sorted. job done. hope this helps :-) p.s.... worked on my astra mk4 as well!!!! Hi . . works for the new tigra on an 05 plate too so many thanks -- Ade Hi....this worked on my 2002 1.7 diesel corsa van too. Thanks