Hi All
I upgraded to discovery 4 Bluetooth module using the guide on wiki for wiring instructions. All worked fine and can now see address book on the l322 screen and caller ID works as expected.

However each time I start up car it asks me for pin number on phone and doesn't connect unless I input 2121 which is pretty annoying each time, what have I done wrong? Any ideas? Thanks!

What phone are you using?

Using a Samsung galaxy s8 android phone, hope that helps?

Just an update here, i now have this working. Problem was...
Phone was paired to original Nokia system, I didn't unpair and wired up BT box from LR4, phone asked for pin every time which is annoying.
I unpaired phone and disconnected new BT box for 30 mins, then reconnected and repaired and all works perfectly!