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: Notes
- This section refers to components of the communication systems available in Europe and not all apply to communication systems used in USA and Canada.
The Microphone Unit (in front roof module) R164 in the Front Interior Light W1 consists of a maximum of three microphones.
As of calendar week 22/04, only two microphones were installed.
For this, one microphone is connected directly to Telephone Transceiver R36. The other microphones are connected to the Digital Sound System Control Module J525.
Microphone Unit (in front roof module) R164
A - Driving direction
B - Front Interior Light W1
C - Microphone 1 (black/gray) to Digital Sound System Control Module J525 or Telephone Transceiver R36
D - Microphone 2 (white) to Digital Sound System Control Module J525 (left-side steering only) up to calendar week 21/04
E - Telephone Transceiver R36
F - Digital Sound System Control Module J525
G - Microphone 4 (red) to Digital Sound System Control Module J525 (right-side steering only) up to calendar week 21/04
H - Microphone 3 (blue/green) to Digital Sound System Control Module J525 or Telephone Transceiver R36
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:
- • 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.