Peugeot 308 Secret Menu -

The screen will flash and change to display the engineering parameters module. 3. Later Generations (NAC / RCC Systems)

the physical "MENU" or "SRC" button (usually for 5–10 seconds). peugeot 308 secret menu

Software versions, map versions, GPS signal strength, and navigation demo mode. For NAC Systems (Newer Models) The screen will flash and change to display

While the menu is "read-only" regarding critical engine mapping, improper use can lead to system instability. Software versions, map versions, GPS signal strength, and

Accesses various internal logs and system-level diagnostic lists. 2. Service Spanner Reset Menu

The is a built-in diagnostic and developer mode hidden within the car’s touchscreen infotainment system. Often referred to by enthusiasts as the "Expert Menu" or "Engineering Mode," this interface bypasses the standard layout to grant owners and technicians access to live telemetry, raw GPS signals, exact system hardware logs, and a command line interface for "cheat codes". Whether your vehicle runs the older SMEG/SMEG+ hardware from early generation T9 models or the modern NAC (Navigation Advanced Connectivity) infotainment architecture, unlocking this menu is entirely possible using a series of specific button-press combinations.