The exact functions depend on your specific car and system, but here are the most commonly reported ones:
Instead, these secret screens are primarily designed for technicians and developers. They are often referred to as the . These menus provide a far deeper level of access to the vehicle's electronic systems than what is available to a regular user, revealing everything from GPS satellite data and component logs to hidden features like customizable dashboard themes.
View the exact number of satellites your car is tracking and the raw signal strength. System Health:
Beyond diagnostics, Peugeot engineers left some playful secrets. peugeot 308 secret menu
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.
Some menus allow you to toggle a "Demo Mode" for the navigation system. Safety First: Words of Caution
so the infotainment screen is fully booted up. The exact functions depend on your specific car
The secret menu is a built-in diagnostic interface embedded within the car's infotainment system (such as the RT6, SMEG, SMEG+, or NAC units). Manufacturers include these hidden screens so factory workers and dealership technicians can quickly verify that the screen, GPS, radio buttons, and internal computer systems are functioning perfectly before the car leaves the garage.
Found primarily on Peugeot 308 T9 models manufactured between 2013 and early 2017.
The digital or semi-digital cluster on the Peugeot 308 houses diagnostic “screens” that the manual never mentions. View the exact number of satellites your car
While exploring the secret menu is generally safe, it is vital to remember that
. This allows you to see the "wet" timing belt to check for cracking or swelling without dismantling the engine. Glovebox CD Player: