Peugeot 308 Secret Menu -

Cycles through monochromatic screens (Solid Red, Green, Blue) to check for dead pixels or backlight bleeding. The Risk of "Cheat Codes" and Advanced Toggles

Depending on your model and infotainment system, the "secret handshake" varies. Here is how to get in: SMEG / SMEG+ Systems (Common in 2013-2017 models): Turn on the ignition and wait for the system to load. Press and hold

Select "Settings" from the touchscreen menu. peugeot 308 secret menu

For models equipped with the SMEG or RNEG systems (typically 2013–2021), there is a diagnostic menu that reveals technical details often hidden from the driver. How to Access: Press and hold the

A will appear, displaying technical data. Press and hold Select "Settings" from the touchscreen menu

Accesses system metrics, software versions, and basic build data.

If your second-generation Peugeot 308 features the early responsive touchscreen with physical buttons on the sides, you likely have a SMEG or SMEG+ unit. Accesses system metrics, software versions, and basic build

A keypad will appear on the screen asking for a password. Enter one of these functional codes: