i know the answer to this question i had the same problem here
1) turn on your transmitter
2) leave your car off
3) press the scroll key until "TDB" appears on the screen
4) on the screen it should show L/F if you press the throttle and R/B if you brake its set on R/B
5)Press the decrease key until the current value is on 0% ( on L/F)
6) after that set up your ESC again and thats it your readdy for run
HOPE THIS HELPS