I have my sons 2004 ? volkswagon Jetta stored at my place. I went out to try to start it and when i put the key in the door ,his window opened a little ,the battery is dead. why did the window open and will it close when I boost hte battery. There is a case that the battery is in. how so you open the case, to boost it and is there any special way to boost or just like any other car.

high pressir

all vw MUST be reset after battery dies/changed.put key in door,unlock/hold key over 30 secs(windows go down)then lock/hold key over 30 secs(windows go up/sunroof closes)then press unlock button on remote for 30 secs......RESET DONE......(try this for fun....sit in car after turning off engine/remove key,drivers door keypad is still live(until you open door)ALSO when engine is running lower any window and then raise up with fingers in top of door,the window will rollback.(if you do it once it hurts..twice it really hurts..three times it traps your hand in.)ALL THIS is NOT in the handbook.......

I would try and get it to run,and let it relearn,if it does not,then it has to be reflashed at the dealer.

These switches fail sometimes, when this happens the control unit is not aware that you have opened the door

The switch is integral with the lock unit, and they are not easy things to replace either.
remove the internal door trim. unplugg the wiring inside. remove the outer key barrel and unhook the cable from the outer handle to the lock unit. unbolt the lock unit. the window regulator will have to be unbolted from the window (remove the 2 plastic circular access panels and wind the window down to a level at which the 2 bolts are visible), lift the window clear once unbolted (using your hands, slide it upwards in its guide rails, stick it in place with tape).
once this is done the window regualtor can be unbolted (10 or so bolts) and removed, complete with the door lock.

You blew a fuse. Try this site and search for "fuses panel diagram"

vwvortex.com

You need a new ignition switch, the electrical part of the points in the switch have burt out.

I had the problem with key not going into the ignition on 2005.5 Jetta had to have the car towed and ignition replaced which cost 375$. But what i read afterwards is there is a locking mechanism in the ignition it is a white thing that slides so you cant get your key in this can be moved with a a small aharp object ant you can then get your key in!!!

check the battery cables and the ground connections as the car is older and corrsion can give you troubles like this.

My son has a 2004 Volkswagon Jetta that had a dead radio. It occurred after my daughter -in- law experienced a dead battery, requiring a jump start. The radio was totally dead. All fuses in the fuse panel were checked first. My local Volkswagon service center was kind enough to assist me in removing the radio from the instrument panel (special "key" required) free of charge. In the back of the radio is a 10-amp mini fuse that was blown. Check it out before you spend megabucks replacing anything else.

Hope this helps you!!!

Put your key in the drivers door key hole and turn it! Worked for me!
I had a service department recommend this to me.
I had never turned mine in the first place but it worked so I'm happy!

Good Luck!