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 MY 07
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 (Interior Microphone -R74-) is connected directly to the Digital Sound System Control Module -J525-.
- Microphone (blue) for the Digital Sound System Control Module -J525- (LHD vehicle)/Telephone Transceiver -R36- (RHD vehicle)
- Interior Monitoring Transceiver Module 1 -G303-
- Microphone (black) to the Telephone Transceiver -R36- (LHD vehicle)/Digital Sound System Control Module -J525- (RHD vehicle)
- Interior microphone -R74- (black) for the digital sound system control module -J525- (all vehicle with BOSE)
- Blue 6-pin connector (T6ao)
LHD vehicle:
- Telephone Microphone -R38- (black):
- Blue 6-pin connector (T6ao), pins 1 and 2: telephone microphone -R38- (black), pins 3 and 4: interior microphone -R74- (black), pins 5 and 6: speech recognition system microphone -R206- (blue)
- Inside Microphone -R74- (black)
- Voice Recognition Microphone -R206- (blue)
RHD vehicle:
- Voice Recognition Microphone -R206- (blue)
- Blue 6-pin connector (T6ao), pins 1 and 2: telephone microphone -R206- (black), pins 3 and 4: interior microphone -R74- (black), pins 5 and 6: speech recognition system microphone -R38- (blue)
- Inside Microphone -R74- (black)
- Telephone Microphone -R38- (black):
Microphone Unit in Front Roof Module -R164-, Removing and Installing. Refer to MICROPHONE UNIT IN FRONT ROOF MODULE FROM MY 07 .
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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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