double check parameters 18,31,32 if thats won't do it, go thru every parameter and verify. maybe a car call lockout parameter, how are you giving it a car call thru the tool? I've seen the car call option, on the laptop version, but have yet to find software that will accept a car call from the tool. as far as the DZR fault there is a little reed switch on the selector assy that causes this problem did you replace that, you may need to after you get this problem solved. sure sounds like a parameter problem, you may need to also go thru every clc variable and make sure they are in correct state. maybe you will find a clue there.