Hi I'm new here, and after having I BMWs for many years I'm very happy to say I'm well impressed with my A3 even though its 14 years old.  Three things I would love to know are:

1. Can you change the locking so all doors unlock together with coding, I've looked though the settings and cant find anthing in them
2. Can I add a BT module to the SatNav radio, it has phone options but it say on the screen that its not installed.  I dont want to change the head unit for a new one because it has the factor Sub fitted. 
3. Can you change the steering wheel to one with controls, I've seen them on the same year car, so I assume these were optional extras when it was ordered from Audi. 

Thanks in advance for your comments. 

Rob.

In regard to question 1, the first press of the key fob button unlocks the driver's door only, a second press within five seconds of the first unlocks all the other doors.