It is amazing how a parked car becomes a home to vermin in no time... 1-2 months and a few will take up residence. 2-3 years? Heck, they've turned that car into a condo for all their friends and family! How many times have all of us gone a little deeper to do a repair on a car that has sat for a while and found a mouse nest made of the fluffy pink fiberglass home insulation or something else. I've said it before and I'll say it again to everyone who parks one of these cars for the winter... Throw a mouse bait in an interior footwell on the floor mat, one in the trunk well, and one on top of air intake housing in the engine compartment. That is preventative maintenance as the last thing anyone wants is trying to diagnose problems caused by vermin chewing on wiring... There is nothing worse than that.