I have a 2007 SRT-6. The car locks fine and I get the 3 flashes when I test the system however when I'm in the car it sounds like the pump in the boot is going for quite a while after. Even though my car is still locking I'm concerned that the pump will be working more than it should due to perhaps a problem with the vacuum system. Lady owner, so any helpful suggestions welcome before I get ripped off by a garage ! thanks