Add-on AUX interface

Porsche Add-On AUX Interfaces - Simple Audio Input for Factory Multimedia Systems

Porsche Add-On AUX interfaces allow external audio devices—such as smartphones, MP3 players, or portable media sources—to connect directly to the factory infotainment system via a 3.5mm auxiliary input. Designed to retain the original head unit and interior appearance, AUX interfaces provide a straightforward, reliable solution for adding external audio playback to Porsche multimedia systems.

Available from Design911, Add-On AUX interfaces are ideal for restoring lost connectivity or upgrading older Porsche audio systems without replacing factory components.

What Do Porsche Add-On AUX Interfaces Do?

Add-On AUX interfaces enable analogue audio input through the factory sound system.

Core Functions:

• Connect external audio devices via AUX input
• Play music through factory speakers
• Retain OEM head unit and controls
• Provide a simple, plug-and-play audio solution
• Preserve factory interior appearance

They offer an easy way to expand audio functionality in vehicles without Bluetooth or USB support.

Why Do Add-On AUX Interfaces Fail?

AUX interfaces rely on wiring, connectors, and analogue signal paths that can degrade over time.

Common Causes of Failure:

• Worn or damaged AUX cables or connectors
• Internal wiring fatigue from vibration
• Oxidation or corrosion at connection points
• Compatibility issues with updated infotainment systems
• Damage during previous audio installations

Failure may result in crackling audio, intermittent sound, or complete loss of input.

When Should an Add-On AUX Interface Be Replaced?

• Porsche Add-On AUX interfaces should be replaced when:
• Audio signal becomes intermittent or distorted
• External devices are no longer recognised
• AUX input stops producing sound
• Upgrading to improved audio integration solutions
• Diagnosing unexplained sound input faults

Replacing a faulty interface restores clean, reliable external audio playback.

Highlights

• OEM-style Porsche audio input solutions
• Enables external audio playback via AUX
• Retains factory head unit and appearance
• Simple, reliable plug-and-play installation
• Ideal for audio system refresh or repair