widescreen says emerg.deact code wait 9:59 mins??

[sancho]

well i got into my 03 plate x5 with satnav and widescreen anyway i got in this morning and it wouldnt turn over , it tryed then died, so i got my jump starter pack and tryd firin it up to find the immobiliser had kicked in and the nav screen displayed 'Emerg.deact wait 9:59 mins _ _ _ _ but it doesnt count down and i have never used or activated this feature b4
So i waited 10 mins anyway then tried 0000 the hit deactivate only for the alarm to sound off, so i reset alarm and went back into my house and started reading up,I found that to reset an unknown code i had to pull battery lead off and wait 10 mins then connect and then wait a futher 10 minutes and it should start but it doesnt it wont take 0000 and it doesnt count down as i would expect it to from 10 mins it just stays there what can i do ive been on this now for 8 hrs plz any good advise is welcomed as im pulling my hair out as im stuck without it thnx guys.