The Peugeot 308 secret menu is a powerful, user-accessible engineering tool that provides real-time data and system diagnostics without specialized equipment. While safe for viewing, users must exercise caution when navigating to configuration submenus. This hidden interface exemplifies how modern vehicles contain multiple layers of software access, and understanding its structure can aid in basic troubleshooting and system verification.
Treat this menu as an "information only" zone. Most users should only use it to check versions or GPS functionality, not for changing configuration settings.
Monitors exact active satellite positions, signal-to-noise ratio, and live latitude coordinates.
Yes, even the humble HVAC panel contains a secret menu. This works on all Peugeot 308s from 2014 to present that have automatic climate control.
If you are looking for simple car health data rather than system engineering settings, Peugeot provides a basic, built-in diagnostic tool accessible through the standard menu. peugeot 308 secret menu
View detailed logs of system errors and hardware status.
The method to open the hidden screen depends on the generation of your Peugeot 308 and the type of infotainment system installed.
: The screen will briefly flash or click over, presenting the hidden Service Menu containing raw module logs. 2. The NAC / RCC System (Modern Generations & i-Cockpit)
If prompted for a password or cheat code, standard entry codes include 1111 , 1122 , or 0103 . The Peugeot 308 secret menu is a powerful,
Newer models, especially those with the 10-inch or newer 9.7-inch capacitive touchscreens, use the or RCC infotainment systems. These systems are faster and offer more, though the "hidden" menu is often accessed differently.
The new system is Android-based. To access its hidden diagnostic portal:
View the raw data feed coming from the vehicle's navigation antenna, including active satellite connections and precise coordinate readings.
On the digital cluster (308 GT and GTi), the speedometer normally ends at 250 km/h. However, if you press and hold the "MODE" button on the steering wheel for 30 seconds while in sport mode, the dial will slowly stretch to display 300 km/h. It’s cosmetic only—the car won’t actually go that fast. Treat this menu as an "information only" zone
On later iterations of the Peugeot 308 featuring piano-key style physical toggle buttons below the screen, the method requires a passcode:
Verify the exact firmware version of your infotainment system for potential updates.
The triggering sequence relies on a sustained physical interaction with the infotainment fascia or display glass. 1. For SMEG and SMEG+ Systems (Most Common T9 Models)
Accessing these hidden developer screens allows you to troubleshoot electronic glitches, check firmware versions, and view raw sensor data without buying an expensive OBD2 scanner. What is the Peugeot 308 Secret Menu?