Venza handsfree microphone failure

I had a similar problem with my 2014 Opel Insignia. Bluetooth connected, but the microphone wouldn't pick up my voice, and voice recognition didn't work. Does your volume control work when you're trying to make a call?

Volume control works for other audio, like the radio. But when I try to make a call, there's no output through the speakers, and the microphone is dead. Do you think it's the same issue?

Sounds very similar to what I experienced. It was an issue with the main unit itself, and there wasn't a simple fix. I'd recommend taking it to a workshop for proper diagnosis.

A workshop visit seems like the next step. The estimated repair cost is about 815€. Thanks for sharing your experience; it's been helpful.