service light reset
Considering it's made by a GM company, I would assume the standard practice here works there... Turn key to on, but do not start... Pump gas peddle three times... Press and hold brake peddle till the service light blinks and then goes out... Start the car to make sure the light was reset... Or... Turn to on... Hold trip reset button... Start car keep holding trip reset till the light on the dash goes out... Hopefully one of those works, but they're just kinda the 'try this' until someone who knows chimes in.
do ou have a spare key to the car if so try that some times tht used to be comon fult with the astra?
I found a site where you can find how to reset InSP service light on a Opel Signum, it is the same with Vauxhall Signum. http://resetservicelight.com/reset-service-light-indicator-opel-signum/
Hold your trip rest button down push the brake and hold turn engine onto 2 (do not start) may take a few seconds then it will go from inspired on your trip screen to - - - - then take foot of brake and finger off trip button turn key back to off then should be done hope this helps
The post from Signum 2013 works perfectly. Make sure insp is showing (engine off). Hold down reset button, hold down brake, turn ignition switch to on (not start) and a few seconds of flashing and its done.