Michael Foster

I would check window seal,you can buy a tube cheaply from your local accessory shop

Not 197k ,not even if its a diesel

if your astra is the model with a tripometer button in the clocks ,put your foot on the brake and push the tripometer button at the same time turn on ignition ,wait 10 seconds and the numbers will begin to flash then 0000 .turn off ignition then back on ,should be reset. If not its done by accessing the menu on the left stalk