Hi , Am new member , just purchased GTV 2.0 T Spark . Having trouble with radio code . I have the code and I know its the right one .Just got the car back from the garage ,they did disconnect the battery .When I turned on the radio it displays -- -- -- -- . I pressed the Band button which displays the CODE IN . Unfortunately when I type in the code it returns to -- -- -- -- . I know you guys have big time experience so am hoping for U help.