Alternatively, press and hold the physical piano key button for 10 seconds.
If your 308 features the early touchscreen interface with physical touch-shortcut buttons flanking the screen, you are running a SMEG system.
: Can be used in conjunction with other codes to check ATB status (connected services).
This paper explores the existence, access methods, and functional utility of the "secret menu" (also known as the engineering mode or hidden menu) within the Peugeot 308 infotainment system. Focusing primarily on the second-generation T9 model (2013–2021) and touching upon its predecessors, this document details the procedures for accessing diagnostic data, screen calibration tools, and system information not available through the standard user interface. The paper analyzes the implications of these menus for advanced troubleshooting while highlighting the potential risks associated with unauthorized system modifications. peugeot 308 secret menu
For updated variants equipped with the modern high-definition infotainment screens: Put the vehicle screen into its primary layout.
If you own a Peugeot 308 (particularly the second generation, 2013–2021, or the latest 2021+ model), you might feel like you know your car inside out. You adjust the climate control, pair your phone via Bluetooth, and check your fuel economy. But what if we told you that hidden just beneath the surface of your infotainment screen lies a treasure trove of diagnostic data, hardware tests, and configuration options?
Warning: This section can disable your parking sensors, automatic wipers, or reverse camera if misconfigured. Do not change settings unless you have a backup. Alternatively, press and hold the physical piano key
Method 1: The SMEG and SMEG+ Systems (Most 2013–2017 Models)
Unlikely. Most secret menus either require a battery reset (BSI reset above) or a simple ignition cycle (off, lock car, wait 1 minute, restart).
If you tell me your exact model year and which infotainment unit your 308 has (e.g., SMEG, SMEG+, or later systems), I can give the more precise button sequence for that variant. This paper explores the existence, access methods, and
Once you successfully bypass the standard interface, you can scroll through sub-menus designed to report active telemetry: SMEG navigation hidden menu in Citroen and Peugeot
However, if you are looking to unlock "hidden horsepower" or video playback while driving, you will be disappointed. This is not a hack; it is a hospital for your car's computer.
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.