Peugeot 308 Secret Menu Jun 2026

The "secret menu" in a Peugeot 308 (often referred to as the or Service Menu ) is a hidden diagnostic tool used by technicians to check software versions, hardware serial numbers, and system temperatures. Depending on your car's generation (T7 vs. T9) and infotainment system (SMEG, NAC, or RCC), the way to access it varies. How to Access the Hidden Menus