It is alway best to have your AVAS system serviced by the original dealership you purchased your vehicle from. All of our approved dealerships are trained to install, service and replace the AVAS system. Taking your AVAS system to be serviced at any location other than our approved dealerships may result in the system's power disconnection, damaging of your AVAS system and could potentially violate your limited warranty. For any further information regarding this, please reach out to our support team by submitting a support ticket through the support form within the app or our support page at https://support.myavas.com/.