My 2000 a6 audi will not automatically start and my battery is full. when i jump it, it starts ok

ok test and check connections battery and alternator

check to see if the cable plugs to the back of the alternator.

Dead Battery --Replace it

On the 2005 Audi A6 3.2 (6 cylinder) the battery is stored in the right rear trunk, under the trunk floor lid. Note: To jump start the car, you simply raise the engine hood, and look in the upper left corner of the engine compartment, just slightly below the plastic cover. There you will see connections that lead to the battery and are specifically designed for jumping (or charging) the battery. You will need to lift up gently on a reddish brown cover which is protecting the positive terminal. The negative terminal (black) is not covered.
Under no circumstances should you attempt to jump the battery directly. The battery could explode and you could get sulfuric acid on your face and in your eyes, which would be bad. Very bad.

either a dead battery or bad wire connections from battery to starter first check and clean battery connections if still not starting try jumping battery if it still click than you have bad connection at starter

Try starting without touching gas pedal

Yes
First thing is to test the battery and this is how Turn on head lights, if dull leave on to see how long the stay on for. Next turn lights off put battery on charge for 6 hrs .Turn on lights again if still dull either battery or charger no good
If lights bright try to start and when starter trys to turn engine over the lights go dim THEN battery is no good.
Then get a jump start from another battery and put pos term on both batterys first, then earth lead(BLACK) on last then start if starts ok remove the BLACK lead and turn on head lights if goes bright ALTERNATORs ok so replace battery ....

sounds like a faulty oil level sensor i,v replaced them in the past you need to get it checked first because the sensors aren,t cheap

check the battery that happens if you dontdrive it for somo time

I found the battery myself. All of the responses were incorrect as to where the battery was located. Everyone said it was up front but in my car, it is in the trunk. I got the problem fixed myself.