The IS300, Lexus' sport sedan, comes equipped with a standard stereo deck that includes an in-dash CD player, or optional deck that is capable of receiving satellite radio. Lexus owners can upgrade their factory head unit or replace their stock deck with an aftermarket model. You can pay for a professional installation by a car audio technician, or you can install the new audio unit yourself to save time and money.
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Things you need
- Trim panel removal tool
- Phillips-head screwdriver
- Wiring harness adaptor
- 10mm socket and drive
- Faceplate adaptor
Lift the Lexus' bonnet and loosen the bolt that holds the grounding cable to the battery. Remove the cable from the battery and set it aside. Move to the inside of the vehicle.
Remove the dashboard panel below the stereo with a trim panel removal tool. Remove the two bolts behind the panel (under the stereo unit) with a 10mm socket and drive. Pry the access panel from the top of the dashboard above the stereo with a trim panel removal tool. Remove the two screws under the panel with a Phillips-head screwdriver. Grab the panel at the top of the stereo and pull it away from the Lexus' dashboard.
Remove the two bolts at the top of the stereo assembly with a 10mm socket and drive. Slide the factory stereo from the dashboard and disconnect the stereo wiring and antenna cables from the backside of the unit.
Slide the faceplate adaptor into the Lexus' stereo mounting dock. Pull the stereo wiring and antenna cable from the back of the stereo dock to the front of the IS300's dashboard.
Plug the stereo wiring connectors into the wiring harness adaptor leads. Plug the wiring harness adaptor lead connectors into the outlets on the backside of the new audio unit. Insert the antenna cable into the FM antenna outlet on the rear panel of the new head unit.
Slide the new stereo into the faceplate adaptor until it snaps into place within the dashboard dock. Replace the two screws at the top of the stereo unit with the socket and drive. Replace the panel at the top of the Lexus' dashboard and screw in the two screws with a screwdriver.
Align the access panel at the top of the dashboard and pressed firmly against it to snap it back into place. Replace the small panel under the stereo and press firmly against it to snap it back onto the dashboard. Return to the Lexus' battery.
Place the grounding cable clamp on to the negative battery terminal. Tighten the bolt on the ground and cable with the wrench and close the Lexus' bonnet.
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