The SEAT Leon has long been the sportier, Spanish-flavoured sibling to the VW Golf, sharing its engineering but with sharper styling. Its electronic service systems behave the same way: after maintenance they need resetting before the dashboard stops showing the old interval. Common tasks include the oil service reset, clearing the service reminder, a TPMS reset after a wheel change, and window initialisation following battery disconnection. The Leon’s menus changed considerably between the Mk2, Mk3 and Mk4, so each generation has its own procedure. Pick your Leon’s production years below to read the matching walkthrough.