• The other party hears a very quiet or faint voice.
• Calls connect, but your voice is not transmitted.
• Microphone sound cuts in and out.
• Hands-free call sound is inconsistent.

• Check the reported microphone signal and call-audio behaviour.
• Inspect relevant connections and wiring where required.
• Assess the fitted Japanese-market audio or telematics configuration.
• Discuss supported reconfiguration or other repair work identified by diagnosis.
• Replace microphone hardware only where it is required by the confirmed fault.

• W213 model and build year, plus confirmation that it is a Japanese import.
• A clear dashboard photo and any known system details.
• Phone model and whether more than one phone has been tested.
• Details of previous audio modifications and a short recording where useful.

Tell us whether the concern affects normal Bluetooth calls, another installed interface or both. Explain which party hears the problem and whether it occurs every time. This helps distinguish your reported symptom from unrelated audio issues.

Should I buy a replacement microphone first?

Please arrange assessment before ordering parts. The same symptom can require different work depending on the fitted equipment.

Is this a general mobile coverage repair?

This service concerns the reported in-vehicle microphone and call-audio behaviour. Other phone, network or vehicle functions are assessed separately as needed.

Send your enquiry before ordering or sending a unit. NAVIPLUS will confirm compatibility, the agreed work, assessment arrangements and pricing. Any parts, additional services, turnaround estimate and applicable warranty terms will be specified in your quotation.

Your rights under Australian Consumer Law continue to apply. A displayed enquiry price is not confirmation that the service is free.