Step by step activation of F30 Launch Control. 1. Ensure car has no fault codes or CEL warning. 2. Car must be warmed up. LC won't work on cold starts 3. Put to Sports+ 4. Shift gear lever to S 5. Left foot FIRMLY on brakes. 6. Right foot to floor the accelerator till click point. Do it swiftly. Don't hesitate. This is where people usually get it wrong. 7. Release the brakes. Have an orgasm.