the button or icon for approximately 5 to 8 seconds. Release the button when a dark diagnostic screen appears.
The engineering menu allows for changes to vehicle configuration that could cause systems to malfunction.
Unlikely. Most secret menus either require a battery reset (BSI reset above) or a simple ignition cycle (off, lock car, wait 1 minute, restart).
These menus are intended for diagnostic purposes. Changing settings within these "expert" modes can occasionally lead to system instability or accidental data deletion.
Note: On newer 308s (2021+), the process often requires holding the physical "Phone" button while tapping the "Settings" touch button. peugeot 308 secret menu
This report is for educational and diagnostic purposes only. The user assumes all liability for any damage caused to the vehicle's electronic systems.
Because Peugeot updated its infotainment systems multiple times over the years, the method to trigger the secret menu depends entirely on which system is installed in your 308.
Press and hold the (Source) or Menu button for several seconds to bring up the system information screens. Navigation Cheat Codes:
View real-time GPS signal strength and the number of connected satellites. Version Checks: the button or icon for approximately 5 to 8 seconds
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.
It is generally accessed within the infotainment screen (SMEG, SMEG+, or NAC systems) and provides data that is otherwise invisible on the normal dashboard or infotainment display. How to Access the Secret Menu on Peugeot 308 (SMEG System)
The new system is Android-based. To access its hidden diagnostic portal:
When the prompt appears, enter the code to access "Spy Mode" or "Expert Mode". SMEG/WipNav Systems (Older Models): Unlikely
Next time you are stuck waiting for the ferry or sitting in a parking lot, try the button sequence. Watch the satellites populate on the sky chart. Test your speakers. Just remember: Look, but don't touch the configuration settings. The real secret is that sometimes, the best feature is knowing exactly how your car is performing—right down to the last hertz of audio and the last decibel of the radio.
The , alternatively known as the hidden service mode or cheat code panel, provides drivers with diagnostic insight into the vehicle's infotainment hardware, GPS status, and software versions without requiring expensive OBD2 scan tools. Accessing this parameters window depends entirely on the specific build generation of your Peugeot 308 and the style of its built-in infotainment hardware. How to Access the Secret Menu by Generation
View the exact number of satellites your car is tracking and the raw signal strength. System Health: