nissan sentra 2009 voice recognition command can't hear me

Hi, i bought it from a dealer. There is no button on the radio panel to access
Bluethoot. The only way to access Bluethoot (from what i understrand) is to
use the button on the steering wheel of the car...

When i do press the button it is asking me to say a command or say help.
She (the machine) can't hear me, she keep on repeating that i have to say a
command or hel and after 3 times she repeat then it stop.

i knew the car had a couple of things to be repaired but i was noté I tried
many things on the car except the Bluethoot. I forgot.

I went back to the dealer, he can't help mem doesn't know and suggest i go
to Nissan directly. Nissan is asking 115$ + tx just to do take a look at it.

Coming here to see if someone had experience the same problem...
Thank you