Peugeot 308 Secret Menu Jun 2026

Alternatively, some firmware versions require holding the "Navigation" button or performing a three-finger tap and hold directly on the center of the touchscreen.

However, if you access the QWERTY keyboard cheat codes or deep engineering menus, unless you are an expert. Doing so can accidentally brick your infotainment unit, leaving you with a blank black screen that requires a trip to a dealership to re-flash using proprietary Peugeot software. Summary Cheat Sheet Infotainment Unit Trigger Action Best Hidden Feature SMEG / SMEG+ Hold Settings / SRC icon for 7 seconds Firmware version check & Cheat Code Keyboard NAC (Newer models) Hold Music or Nav Piano Key for 10 seconds Deep hardware temperatures & GPS diagnostics RT6 (Older models) Hold the Setup button for 5 seconds Direct audio module testing peugeot 308 secret menu

for about 5 to 8 seconds. Wait for the prompt asking you for a 4-digit security code. Enter the code 1111 and press confirm. Summary Cheat Sheet Infotainment Unit Trigger Action Best

: Press and hold the Music button down continuously for roughly 6 to 8 seconds. : Press and hold the Music button down

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.