Problem with 1.9tdi (n-reg) alarm/immob after battery change

[Trevaaaaaaa]

Hi all,


I have just got an n-reg passat 1.9 tdi, I had a flat battery, removed
& recharged, problem is that since i have reconnected hazzards go off
for for about 10 secs & then stop, then they restart for another 10
secs. also ignition is immobolized. there is no audible horn or
siren...just hazards & immob.i never got a fob or any special
keys..just 1 regular key for doors,ignition etc.


any help would be great
thanks