Peugeot 308 Secret Menu |verified| [ Premium — 2025 ]

The Advanced Driver Assistance Systems (ADAS) have sub-settings that allow you to adjust the sensitivity of Lane Keeping Assist and Traffic Sign Recognition within the driving aids menu.

The "secret menu" of the Peugeot 308 represents a necessary bridge between the consumer-facing software and the engineering requirements of the vehicle. While PSA/Stellantis designs these interfaces to be hidden, their discovery by the enthusiast community provides a valuable tool for diagnostics and hardware maintenance. As vehicles become increasingly software-defined, the accessibility of such menus continues to shrink in favor of cloud-based diagnostics, making the documentation of these legacy access methods vital for the longevity of vehicles like the Peugeot 308.

To exit, press "AUTO" again for 3 seconds. peugeot 308 secret menu

Before pressing any buttons, it is essential to identify the infotainment hardware installed in the Peugeot 308. Peugeot has utilized three primary infotainment units over the production lifecycle of this model:

This report details the procedures required to access the "Secret Menu" (Engineering Mode/Diagnostic Mode) on the Peugeot 308. This menu provides access to vehicle system status, sensor diagnostics, screen calibration, and configuration settings not available through the standard user interface. Access methods vary significantly depending on the vehicle's infotainment generation. Peugeot has utilized three primary infotainment units over

Press the physical button on the central console fascia. Press and hold buttons 1, 2, and 3 simultaneously.

If you own a Peugeot 308 (particularly the second generation, 2013–2021, or the latest 2021+ model), you might feel like you know your car inside out. You adjust the climate control, pair your phone via Bluetooth, and check your fuel economy. But what if we told you that hidden just beneath the surface of your infotainment screen lies a treasure trove of diagnostic data, hardware tests, and configuration options? If your Stop-Start system isn't working

⭐ One of the most practical uses for the secret menu is checking the battery’s health. If your Stop-Start system isn't working, it’s often because the voltage is too low. The hidden menu shows the exact voltage the alternator is providing.

Before exploring the secret menu, keep in mind:

The latest generation uses a highly customizable system with

(usually marked with "000" or a wrench) on the instrument cluster. Turn the ignition (do not start the engine).