We purchased a 2015 SRX from the dealer in March 2015. The ACC has never worked...keep getting message "Adaptive Cruise Temporarily Unavailable"...we've taked it back to the dealer for service, they thought it was a sensor and replaced it...wasn't the sensor. I have tried talking to our Cadillac Ambassador to no avail...I've emailed Cadillac who tells me the system is working exactly as it was designed to...I guess it was designed to never work!! We regret purchasing this Cadillac....paid Cadillac price and received a Honda....All we want is for the cruise to work!!! Any suggestions????