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.
Microphone Unit in Front Roof Module -R164- OVERVIEW FROM JUNE 2009
The Microphone Unit (In Front Roof Module) -R164- in installed in the Front Interior Light -W1-. Depending on the equipment, there are up to three microphones installed.
One microphone (Inside Microphone -R74-) is connected directly to the Digital Sound System Control Module -J525-. The other microphones are connected to the Information Electronics Control Module 1 -J794-.
- Information Electronics Control Module 1 -J794- microphone (blue)
- Interior Monitoring Transceiver Module 1 -G303-
- Microphone(black) to the information electronics control module 1 -J794-
- Inside microphone -R74- (black) for the digital sound system control module -J525-
- Blue 6-pin connector (T6ao)
LHD vehicle:
- Left Front Microphone -R140- (black)
- Connector, 6-pin (T6c) blue, pins 1 and 2: Left Front Microphone -R140- (black), pins 3 and 4: Inside Microphone -R74- (black), pins 5 and 6:Right Front Microphone -R141- (blue)
- Inside Microphone -R74- (black)
- Right Front Microphone -R141- (blue)
RHD vehicle:
- Right Front Microphone -R141- (blue)
- Connector, 6-pin (T6c) blue, pins 1 and 2: Right Front Microphone -R141- (blue), pins 3 and 4: Interior Microphone -R74- (black), pins 5 and 6:Left Front Microphone -R140- (black)
- Inside Microphone -R74- (black)
- Left Front Microphone -R140- (black)
Microphone Unit in Front Roof Module -R164-, Removing and Installing. Refer to MICROPHONE UNIT IN FRONT ROOF MODULE FROM MY 07Β .
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.