T-Cross Hands-Free Call System Failure & Sound Issues

Having dealt with a similar audio system issue on my 2019 T-Roc, I can share my experience about sound quality problems. I have some experience working with car electronics, though complex infotainment repairs are best left to professionals. The symptoms you describe match exactly what I encountered, particularly the dead audio input and telephony errors. After initial troubleshooting of basic things like checking connections and system resets, I took it to a workshop. The diagnosis revealed a failed control module in the infotainment system that handles ambient noise compensation and microphone processing. The entire unit needed replacement because individual components couldn't be repaired. Total cost was 815€ including programming and testing. The repair completely resolved all issues with hands-free calling and voice commands. No problems since then. To provide more specific guidance, could you share: Has the issue appeared gradually or suddenly? Are there any other warning messages besides telephony unavailable? Have you already tried resetting the infotainment system? Do you hear any unusual sounds from the speakers during calls? This information would help determine if youre facing the same root cause or potentially something different.

Since my last service at 98000km, the wireless connection problems have gotten progressively worse. I initially thought the Bluetooth issue was related to my phone, but after testing with multiple devices, its clearly a car system problem. The voice recognition stopped working completely two weeks ago. The microphone repair costs quoted by a local shop were significantly higher than your 815€ solution. Its good to know about the control module being the potential culprit rather than just the microphone unit. Your input about the ambient noise compensation system helps explain why callers cant hear me at all. I will definitely check for the same symptoms you mentioned before bringing it in. The reset attempts were unsuccessful and no abnormal speaker sounds occur during failed call attempts. Looks like I need to have the control module checked as the next step.

Thanks for providing those details about the progressive wireless connection issues. Based on your symptoms timeline, this definitely mirrors what I experienced with my T-Roc before getting it fixed. The gradual deterioration starting after service is particularly telling. In my case, we discovered the ambient noise control module had become more unstable over time rather than failing suddenly. This matches your experience with the voice recognition becoming increasingly unreliable before stopping completely. That quote seems unusually high if they are just planning to replace the microphone unit. The audio system architecture in these models means the control module is often the core issue, not the microphone itself. The module handles both voice recognition and ambient noise compensation. Since your reset attempts had no effect and there are no speaker issues, this strengthens the case for control module failure. When you take it in, specifically ask them to diagnose the noise compensation module, mentioning these symptoms can help focus their testing: Progressive wireless connection degradation, Complete voice recognition failure, No audio input during calls, Multiple device connectivity issues The repair should include full system testing to verify all wireless functions and voice commands work properly after module replacement.

I really appreciate the detailed responses and troubleshooting suggestions. The information about the noise compensation module being the likely culprit rather than just the microphone makes a lot of sense given how the problems developed. I will take it to the dealer tomorrow and specifically request they check the control module, mentioning the symptoms you listed. The sound quality issues and Bluetooth problems seem to match exactly what you experienced, so Im hopeful this will lead to an accurate diagnosis. The progressive nature of the wireless connection failures, combined with the complete loss of speech recognition, gives me confidence were looking at the right component. Its frustrating that the audio system failed this way, but at least there seems to be a clear fix. Will update once I get the official diagnosis and repair quote. Hopefully the cost will be closer to the 815€ you mentioned rather than the higher estimate I initially received. Thanks again for helping narrow down the likely cause.