This mode provides a readout of sensor data rather than hardware tests.
Some sub-menus allow you to change the vehicle's country codes or toggle hardware profiles (like telling the car it has a backup camera when it doesn't). Altering these can cause the screen to reboot endlessly or lose sound completely.
To go deeper into the technical "Cheat Codes," hold the "Music" or "Media" button. A keypad will appear where you can enter specific codes like "BTK" or "SPY" to view system logs and CPU usage. For the NAC Infotainment (Post-2017 Models) peugeot 308 secret menu
From here, you can see the firmware version, Bluetooth version, and map data.
The new system is Android-based. To access its hidden diagnostic portal: This mode provides a readout of sensor data
If the screen freezes, a long press on the Music button (8+ seconds) often forces a manual reboot.
Place three fingers flat on the touchscreen simultaneously and hold them there for 5 seconds. To go deeper into the technical "Cheat Codes,"
Note: This method usually brings up a different menu focused on the amplifier and speakers.
The screen will flicker. Ignore the normal settings menu. After a long press, the screen will switch to a dark green or blue text-based menu with technical terms.
: Changing calibration files can brick the infotainment system.
The Peugeot 308 contains several "hidden" or expert-level menus that allow you to check system health, verify GPS data, and even reset service alerts without a mechanic's tool. 1. The SMEG/Infotainment Hidden Menu