Peugeot 308 Secret Menu Jun 2026

While the menu is "read-only" regarding critical engine mapping, improper use can lead to system instability.

Resets the infotainment system module (useful if the screen freezes or Bluetooth cuts out).

Method 2: The RCC and NAC Systems (Second Generation, 2017–2021)

Whether you are a tech-savvy owner, a car enthusiast looking to explore the hidden capabilities of your SMEG/NAC infotainment system, or just want to diagnose a potential issue without visiting a mechanic, accessing the Peugeot 308 hidden service menu can be incredibly useful.

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.

Because several of these functions (engineer mode, BSI reset, forced DPF regeneration) can be dangerous or responsibility-intensive. Dealers prefer you bring the car in for diagnostics.

While the menu is "read-only" regarding critical engine mapping, improper use can lead to system instability.

Resets the infotainment system module (useful if the screen freezes or Bluetooth cuts out).

Method 2: The RCC and NAC Systems (Second Generation, 2017–2021)

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.

Because several of these functions (engineer mode, BSI reset, forced DPF regeneration) can be dangerous or responsibility-intensive. Dealers prefer you bring the car in for diagnostics.