Hello all!
Very informative topic, thank you everyone for your inputs!
I would like to present my problem.
I recently bought a 2006 Q7, loaded with Bluetooth module. I am able to pair my Nokia Lumia 625, as well as several other BT-capable mobile phones. Audio is fantastic, I can place and receive calls and I can load my own address book into the car's/module's address list.
However, when I stop the car (ignition off) and switch it back on again, the BT module does not pair automatically with any BT-capable mobile phone! So, I have to scroll into the mobile's BT menu and re-pair. And I have to do this every time I turn on the car and for EVERY phone!
This is very, very annoying.
I have tried to update to 5570, with success. Except for the BT module: it tries to update from 600 to 999, only to abort with error 152.
I tried to diagnose via VCDS and no error was displayed.
Another thing that bugs into my mind is that... I am not able to change the BT pin.
Or better... I change from 1234 to, let's say, 3333 and it works (and I can pair mobiles with the 3333 pin). But when I turn off the ignition and turn it back on, the pin has been reset to 1234. I have also tried to change the pin via VCDS, only to get the same results.
My question is: is there some kind of fault in my BT module that makes it work as a "read only" for some parts of the memory?
Any help would be welcome.
Thank you.