You must be logged in to My Pages. There, select “My Västtrafikkorts” and choose the card you want to auto top-up by clicking the button to the right. You will see a short description of the service and can confirm your order by clicking the "Order now" button. You will then be taken to the shopping basket and should follow the instructions given there.
If the card contains Auto top-up period, each new period is automatically topped up when the preceding one expires. One week before the period ends, the payment for the next period will be taken automatically from your account.
You can auto top-up a period if it is already on the card. This can have started or expired or have been loaded onto the card but not yet activated. If you buy a new period at a point of sale or at a Västtrafik shop, it can take up to 48 hours before you are able to auto top-up via the website.