Grand Vitara 2002 starting issue

[BrianHarrold]

I have a Grand Vitara 2002 petrol 2 litre.
The car is showing the padlock sign on the dash. Car won’t start as it is immobilised.
It started yay. But now will not.
I’ve tried disconnecting the battery, no joy.
The 2 keys do not have a battery in them.
Anything I can try.