You've probably got a split in the grommet that the wiring goes through the bulkhead making your footwell leak. Or a blocked pollen filter.

My old Puma used to use a bit of water (max to min line in a week or two) but I never found a leak and it never caused an issue. Probably a small crack in the header tank.

Might be a dead battery or a dirty contact in the key for the locking. If you join my forum as linked to below, there's a step by step guide to reprogramming your key should you need to.

http://www.projectpuma.com/viewtopic.php?f=51&t=39