Use dealer-level diagnostic software like or PP2000 to rewrite parameters and activate hidden native vehicle features safely.
The hidden service menu will pop up, showing software versions, map data, and GPS signal strength. WipNav / RNEG Systems: button until the first menu appears. Press SETUP again, then simultaneously hold buttons 1, 2, and 3 to reach the deeper engineering menu. Modern i-Cockpit Systems (2021+ Models): peugeot 308 secret menu
While the secret menu is useful for diagnostics, Peugeot also offers standard customization features for safer everyday use: Peugeot 308 Secret Menu Use dealer-level diagnostic software like or PP2000 to