Repair Review Car

How to Install an Audio in an Audi S4

1. Push Audi stereo removal keys into the slots on the side on the radio. The keys can be purchased from an Audi dealer or a car audio retailer. Push the keys in until they click into place. Using the keys, pull the radio out of the housing in the dashboard. Unplug the black radio antenna cable. Disconnect the radio wire harness by pushing the tab on the side and pulling the connections apart.
2. Install the face plate adapter. Audi S4s come with a double DIN-sized radio, and a basic aftermarket stereo is too small for the vacated space. A face plate adapter for the Audi can solve this problem and is available from car audio retailers. Click the face plate adapter into the slots vacated by the factory-issue stereo.
3. Attach the wiring. Connect the wire harness adapter to the wire harness of the car. Push the connections together until they click into place. Connect the other end of the wire harness adapter to the aftermarket stereo wire harness. Plug the black radio antenna cable into the radio antenna port on the rear of the aftermarket stereo.
4. Slide the aftermarket stereo into the port of the face plate adapter. Slide it is as far as it can go, taking care not to trap any of the wires. Turn on the unit to test the installation.