A:Answer Hi Adrian. Thank you for your great question. If you're wondering about using the DVD player built into an aftermarket radio, the answer is probably no. While the car is moving, the DVD player isn't meant to work because it's of course a big distraction. While the vehicle is in park, it should work perfectly. There may be ways to change settings and functionality, but we'd recommend keeping it stock for safety purposes. If you have any other questions on this, please let us know!