V5 system

Hey everyone, my team has recently gotten the v5 system attached and are testing it, Unfortunately after we have driven it for a few minutes the whole system stops working and just does this ear piercing screeching sound. We have tried to stop using it for awhile, unplugged the battery, turned the system off, and even went as far as resetting the Controller. We are unsure if this is a coding problem, the system, or us. We have our first competition in four days so if anyone has any idea how to fix this issue please let me know. Thanks so much!

Was everything update to latest firmware ? (V1.0.5)
What is the source of the sound ? The V5 brain ? A motor ?

Everything does have the latest firmware but all the motors and the brain make that sound.