I have a C4 Cactus 130bhp petrol with S&S. I got an orange engine fault repair need message, I pulled over to check the engine just in case anything silly had happened but then the car would not start. Not even a click. Called the RAC who thought it was the starter motor. They jumped it & I took it to a garage to get the starter replaced at a hugely exorbitant price. A 100 miles later same thing happened. Its only done 31k & is an 18 plate. Any ideas?