The last thing I do every night before I go to bed (come rain, snow, wind or sun) is go and check that the cars are locked on our drive. Surprisingly enough about four times a year I find that one of them have been left unlocked! Anyway I've noticed that once I've pulled the handle on the RRS as I walk away from it less than 5 seconds later I always without fail here a click coming from what sounds like the back underneath the car? Anybody know what this is? The car hasn't been running for several hours and sometimes not even that day at all But I always hear that small click as I walk away from it after I've checked the handles?  Cheers Laurence.