Peugeot 308 Secret Menu |top| -

The secret menu—often referred to by enthusiasts as the Expert Menu, Cheat Code Menu, or Engineering Mode—is a hardcoded diagnostic interface built into the Peugeot infotainment system (including RT6, SMEG, SMEG+, NAC, and RCC units).

A countdown from 10 will appear on the screen. Continue holding until it reaches Release the button; the service indicator is now reset. 4. Hidden Hardware "Checks" Timing Belt Inspection: peugeot 308 secret menu