I am trying to get into my trunk on my 2005 audi a6 but I can unlock it from the button on the inside because my battery is unplugged. How can unlock my from the inside?

SOURCE: AUDI A6 RADIO CODE

I just posted a solution for this problem. It comes straight from the radio manual. The dealer should have told you this. If you want him to do it he'll charge money for his time. IF YOU LOST YOUR CODE. THE DEALER CAN HELP YOU OR IF YOU HAVE YOUR 4 DIGIT CODE:

SOURCE: AUdi A6 gas tank button

There is no button to open the gas door from the inside of the car.  As long as the doors are unlocked, you should be able to push in the far right side of the gas door and the left side will pop open. I too spent hours looking for this non existent button..I went as far as to going back to the car dealership.

SOURCE: The battery on my 2003 Audi A6 keeps dying. I

Sound's like a bad alternator, you can check the alternator by measuring the voltage on the battery when the car is started, it should measure above 12.6 volt's but not higher than 14.5 volt's, check the drive belt tension, a lose or wore drive-belt could cause problem's with the alternator charging the batery, check the battery terminal's for corrosion, along with the connection's of the battery cable's.
Hope this help's, good luck.

SOURCE: how do i change time on clock on 2005 audi a6 quattro s line

I think I can help you. I just did this on mine yesterday because my clock runs a few minutes fast each month. It was somewhere bizarre - sorry I'm not near the car to be more clear. I think I picked Sound, Settings and for some odd reason, it was there, rather than in Car, Settings. NOOO - it was in Tuning - click the AM/FM button, then Settings. I've only had it for a few months, but you'd think I'd have that one figured out due to re-setting it.

-maria

SOURCE: AUDI A6 RADIO CODE

try another dealer. maybe try to get ahold of one of the techs at lunch time. this info should be free to the car owner, just be ready to supply the title to the car for some proof. maybe try buying the parts guys lunch or coffee and donuts....this usually works for this type of problem. unfortunaley this info really is dealer only..