...installation? Circuit City tried to install a 571 remote starter in my 2007 Santa Fe . But each of the 7 times they tried to do so , after a day or two , the door locks started to not open . So they just took the system out and refunded my money .Anybody have any idea why this problem ocured and what could be done to solve the problem ?They used two seperate units , neither one worked . They got some advice from the manufacturer but that didn't help . But the Manufacturer said the unit should work in the Santa Fe . No one seems to know what is wrong !The door locks would gradually stop opening with the remote . Maybe not work once the first day , a couple times the next day , and they would usually reach a point where they would not open 95% of the time with the remotes . They would open using the key ,( and the interior open / lock boton worked OK . but then the horn would go off untill you relocked and reopened the locks with the key in order to turn off the factory security . Strange thing is that the remote worked fine for remote starting the car and locking the doors . It was just opening them thet it would develope this problem .