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.
Antenna Module (ATM) (2003-2006): Design: Am/Fm
The antenna module (ATM) consists of a thin film antenna and an AM/FM receiver. The control module can be upgraded with GPS and traffic message channel (TMC) units.
Information from the AM/FM receiver consists of radio signals received on the AM or FM-waveband.
The signal from the AM/FM tuner is transmitted to the audio control module (AUD) and infotainment module (ICM) via the MOST network.
If the antenna module (ATM) is not supplied with voltage communication on the MOST net does not function and the Infotainment system shuts down.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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