Before the youth begin building the robot, check page two of the building instruction manual to view part replacements. One part routinely causes problems in the building process; part 655826. Throughout the building guide the part is black, however; it has been replaced with a blue part in the kit.

In the basic robot configuration, it is important for the rear wheel (as described on pages 16-17 of the building instruction manual) to freely rotate. If the wheel does not rotate all the way around freely it might be on backwards or otherwise incorrectly built. Check the building instructions to correct the issue.

Make sure the battery is charged. The rechargeable battery is reliable and does last a long time (at least 15 hours) when charged, however; if the robot has been left unused for a long period of time or exposed to cold weather during transport or shipping the battery might be discharged.

Having AA batteries on hand may be helpful if the battery is not working properly.

When using the ultrasonic sensor remind the youth to not have their hands in front of the sensor when they press the orange button to start the program. The sensor will sense their hand and the robot will immediately travel backwards.

The ultrasonic sensor has also been known to act erratically because the sensor becomes corroded after two to three years. Replacing this sensor after two years of use is the only way to avoid this problem.

There are two ways to build the light sensor in the building manual. In one configuration the light sensor is pointing straight forward and in the other configuration the light sensor is pointing down. Make sure to select the correct configuration for the task.