If you own a diesel Peugeot 308 with a DPF, the secret menu can force a parked regeneration to clear the filter without driving.
for roughly 5 to 10 seconds.
While holding, turn the ignition on (don't start the engine). A countdown from 10 to 0 will appear.
Browsing menus is fine. Changing calibration values (e.g., tire circumference, country codes) can be traced by dealer diagnostic tools and may void claims related to the module you altered. peugeot 308 secret menu
If your second-generation Peugeot 308 features the early responsive touchscreen with physical buttons on the sides, you likely have a SMEG or SMEG+ unit.
With the system powered up, press and hold the "Music" or "Audio" piano-key toggle button located below the main screen for roughly 6 seconds .
Accessing this menu is safe if you look only. Changing values (e.g., vehicle configuration, DRL settings) can alter your car's behavior or void warranties. Proceed at your own risk. If you own a diesel Peugeot 308 with
Method 1: The SMEG and SMEG+ Systems (First Generation, 2013–2017)
Tinkering with these menus may alter vehicle settings. Always note your original configuration before making changes. Some functions are for professional use only.
The parameters inside the Expert and Cheat menus are meant for factory technicians and software developers. A countdown from 10 to 0 will appear
On later iterations of the Peugeot 308 featuring piano-key style physical toggle buttons below the screen, the method requires a passcode:
Displays detailed software and hardware versions of your infotainment system. Map Data: Shows the version of your navigation maps.