Peugeot 308 Secret Menu Best Jun 2026

: Initiating hard factory resets from this menu can sometimes trap the system in an infinite boot loop.

Check the map version installed (useful to see if you need an update).

the button or icon for approximately 5 to 8 seconds. Release the button when a dark diagnostic screen appears. peugeot 308 secret menu

While it is mostly read-only, it gives owners an unprecedented look under the digital hood of their vehicle. How to Access the Secret Menu (By Generation & Unit)

Check the internal temperature of the head unit and the current battery voltage. Service Reset: : Initiating hard factory resets from this menu

If that fails, try holding the button (map icon) for 10 seconds.

This is the holy grail for Peugeot enthusiasts. It allows you to see GPS satellites, raw speed data, battery voltage, and even update the firmware manually. Release the button when a dark diagnostic screen appears

For an alternative method on some NAC/RCC systems, you can generate a system log by pressing and holding the for about 10 seconds until you hear a beep.