Replacing the battery in a GTV
My low mileage 51 plate GTV 3.0 seems to have a close to dead battery. Its been a garage queen for the last year and done very few miles. I've charged it several times but it runs very low within a week or so and won't start. As yet, its not gone completely flat so the CODE light hasn't come on.
I need to put a new battery in, but if I fully disconnect the old one will I need to reset the CODE with the master key? I had thought it easier to bridge another supply onto the wires while swapping the battery over to avoid complications.
I also looked in the manual and it says I should have a CODE card, however I only got 2 normal keys,1 service key and 1 master key. The car in an import which I bought new.
Any recommendations/advice about changing the battery.