Hi all I am looking for some assistance. I just purchased my 2014 GSR, and I have the ASC light on. Because the car was a left over, I took it to the dealership, and had them change the oil, and inspect the car. They assured me all is well, and i went on about my way. I have searched, but all the other criteria does not match what I am experiencing. I installed a turbo inlet pipe yesterday afternoon, and went for a ride. 3-5 miles into the drive I notice the light. There was no major acceleration going on. The light came on at cruising speeds 45 mph. When key cycled it will go away, but come back on in about 3-5 miles again. I checked for unplugged wires, vacuum lines etc. but to no avail. I re-installed the stock turbo inlet pipe, and tested again with unfortunately the same results. Any help is appreciated as this is driving me nuts, and I would rather not make another visit to the dealer this soon.

 

New development was noticed. Even though a power cycle clears the light from the dash, the cruise will still not work at all. I did install LED light bulbs, and am now reading the lower voltage draw could be affecting the CAN bus system causing the issue. I will remove the bulbs, and report back.

 

After removing all LED exterior bulbs from the car, and pulling the battery cables off for a half hour, this fixed the issue. I hope someone else finds this information useful in the future.