Problem

[Lou Mills]

Hey, purchased my 1st Audi 3 weeks ago Q7, 2007 model. 
 

I have the plugs light flashing on my dashboard, (only come on today) 

then when I arrive home, gear in P, ignition wouldn’t release my keys 😞 

eventually after watching a you tube video I was able to release them, but now the fob won’t lock the car, 

has this happened to anyone else or no what the problem could be?