Before purchasing, please check if the controller model number on the electric vehicle starts with "JR" or"HY" Operation Steps: Step 1: Insert two batteries into the remote control Step 2: Turn off the power of the children's electric toy car Step 3: Press and hold the"Up"and "down" keys for 3 seconds to start matching, when the first LED flashes, turn on the vehicle power switch The red indicator stops flashing and the match is successful.