How do i charge dead battery in audi q7

SOURCE: how to get key out that is stuck in ignition

Remove steering column shroud(cover)and tap ignition barrel with small hammer while twisting key backwards and forwards,also turn steering wheel backwards and forwards sometimes this is enough to release key as the locking pins in barrel and the steering lock pin do sometimes jam.You will have to remove steering column shroud to replace ignition barrel if tapping/hitting it doesnt work anyway so its not a wasted effort.Good luck,let me know how it works out

SOURCE: Key stuck, won't turn, won't shift...replace ignition switch?

Try to shift your key in either direction while try to turn your steering in left and right direction. May be its steering lock which is attached to your ignition key preventing shifting of key. If not, then its obviously your ignition that has gone.
If you decide to change ignition then as a last try Dip your key in lubricating oil and then insert in ignition to turn it on. May be it can help.

SOURCE: 2004 Buick Rainier Steering Wheel Key Stuck in ignition

make sure the shifter is in park.

SOURCE: remove bateries from audi q7 remote and required disassembly.??

- Buy a CR2032 3V battery
- Pry open the battery cover on the remote using a flat head screw driver or a table knife. The pivot point is the chain ring holder opposite to the key.
- Replace battery