Please make sure there is only 1 wireless receiver plugged into your track.  This receiver should be plugged in to either the 1^st or 2^nd tower on your control unit.

Step 1- Take all the cars off of the track

Take controller 1 and hit the set button on the receiver, when you see the #1, press the black button on top of your controller

Take the car 1 and put it on the track.

Press the code button once and then press the trigger on your controller.  Car 1 should now be coded to controller 1.

Step 2-

Take car 1 off the track

Take controller 2 and hit the set button twice on the receiver, when you see the #2, press the black button on top of your controller. 

Take the car 2 and put it on the track.

Press the code button once and then press the trigger on your controller.  Car 2 should now be coded to controller 2.

Step 3 -

Take car 2 off the track

Take controller 3 and hit the set button twice on the receiver, when you see the #3, press the black button on top of your controller. 

Take the car 3 and put it on the track.

Press the code button once and then press the trigger on your controller.  Car 3 should now be coded to controller 3.

Follow the same steps for the remaining cars/controllers.

You will not need to do this before every race; each car will stay coded to its controller.  You should now be set to race