Can primary physical custody be changed if the 17 year old requests?

Yes, primary physical custody can be changed if a 17-year-old requests it, but the process varies by jurisdiction. Courts typically consider the teenager's wishes, especially as they approach adulthood, along with the overall best interests of the child. The court may require evidence that the change would benefit the child's well-being and stability. Ultimately, any modification must be formally approved by the court.