The secret menu is a built-in engineering screen. It is also known as the "Expert Menu" or "Cheat Codes" screen. Peugeot technicians use this menu to troubleshoot infotainment issues without using external diagnostic tools. Why Access It?
Modern vehicles are essentially computers on wheels, and the is no exception. Tucked beneath its stylish dashboard layout lies an engineering and diagnostic portal known to enthusiasts and mechanics as the Peugeot 308 secret menu . Whether you drive a first-generation model (T7), a second-generation powerhouse (T9), or the ultra-modern third-generation version (P5), accessing these hidden screens unlocks real-time system diagnostics, software build information, GPS satellite mapping data, and technical configurations.
Select "Vehicle Information" or "ECU Diagnosis."
Press the screen near the music volume wheel for roughly 7 seconds. Enter the "Cheat Code" to access the engineering mode. peugeot 308 secret menu
: If the standalone button hold does not respond, press and hold both the Music and Navigation buttons simultaneously for 5 seconds until the screen reboots into "Expert Mode". Inside the Secret Menu: Features and Capabilities
The screen will shift into the "Engineering Menu," dividing your screen into sub-menus like Audio, Connectivity, and System Diagnostics. What Can You Do inside the Hidden Menu?
Simultaneously press buttons 1, 2, and 3 to enter the service mode. What You Can Find Inside The secret menu is a built-in engineering screen
For earlier Peugeot 308 models equipped with the navigation system, the secret menu is a valuable tool for tracking system diagnostics and GPS data. How to Access the SMEG Secret Menu:
This menu displays real-time RAM usage, system temperature, and voltage. Hidden Diagnostic Features
Applicable to: Earlier 308 models (T7) or models with smaller non-touch navigation screens. Why Access It
If prompted for a password or cheat code, standard entry codes include 1111 , 1122 , or 0103 .
The , often called "Expert Mode" or "Service Mode," provides access to advanced system diagnostics, software versions, and GPS signal data that aren't visible in the standard interface. Accessing these menus allows owners to check technical details like map versions or perform system tests without needing a professional diagnostic tool. How to Access the Secret Menu