Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Audio Unit
The integrated audio module (IAM) functions as a stereo system in the vehicle and is connected to other control modules on the MOST network.
Integrated audio module (IAM) controls settings for:
- Volume
- Bass
- Treble
- Balance
- Fader
- Equalizer
The Integrated Audio Module compensates the sound amplitude depending on the vehicle speed and has automatic loudness.
The Integrated Audio Module manages playback of compressed music formats from cd.
Support available for following formats:
The integrated audio module (IAM) can play music via the AUX input.
The AUX input is located in the tunnel console.
From structure week 200848, there is support for playback of music via a USB/iPod-connection in the glove compartment (does not apply to Performance or CD-changers for 6 discs). Support available for the following formats:
- mp3
- wav
- wma
From structure week 200848, there is support for reception of digital HD-radio (does not apply to Performance or CD-changers for 6 discs).
HD radio is transmitted digitally on the AM respectively FM wavelength in USA. The Integrated Audio Module (IAM) automatically switches to digital HD radio reception if there is a current frequency and if the function for HD-radio is highlighted in the user menu.
When the Integrated Audio Module (IAM) receives digital HD radio, a symbol appears for HD radio in the Infotainment control module (ICM).
The integrated audio module (IAM) lowers the volume from the current source when the control module receives other audio information, such as indication from the parking assistance function or phone call.
If the vehicle is equipped with a Multimedia module (MMM), voice information is played via the existing speakers.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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