[Seven11]

I have been using launch control (LC) since the day i got the car. Very easy to active. Used during spontaneous races from a stop light.

try this,

Sport Plus Mode
Transmission shifter moved to the right so its in S1
One press of the traction control button
Press the brake to the floor
Press the gas to the floor (not lightly but press the gas ALL THE WAY)
it should show Launch Control Active in the gauge cluster.
Let go of the brake.

Works for me anytime i try this.

if this doesn't work maybe some other factors at play. maybe the steering wheel is not straight or it's raining (rain sensor) or too cold. I am not sure if any of those things I listed actually affect Launch Control but just a thought.