Q: How do you remove and install the radio, navigation receiver, speakers, and rear seat entertainment system on Toyota Tundra?
A: On 2015 and later models equipped with a navigation system or rear seat entertainment system, wait at least 1 minute after turning the ignition switch to the OFF position before disconnecting the cable from the negative battery terminal to prevent damage to the navigation system. Begin by detaching the cable from the negative terminal of the battery. Next, remove the driver's side lower trim panel, instrument cluster trim panel, lower instrument trim panel, and cup holder panel. For floor shift models, turn the shift knob counterclockwise to remove it, then take off the console trim shift panels. On 2014 and later models, the air conditioning control assembly should also be removed. Proceed to remove the radio fasteners, including mounting bolts, detach the radio from the instrument panel, and disconnect the electrical connectors and antenna lead before pulling the radio out. The installation process is the reverse of removal. For the navigation receiver, repeat the removal of the driver's side lower trim panel, instrument cluster trim panel, lower instrument trim panel, and cup holder panel, followed by the shift knob and console trim shift panels for floor shift models. Remove the air conditioning control assembly on 2014 and later models, then take out the navigation receiver fasteners, pull out the receiver and bracket assembly, and disconnect the antenna lead and electrical connector. Remove the receiver and bracket assembly from the instrument panel, detach the bracket fasteners, and separate the bracket from the receiver, with installation being the reverse of removal. For door speakers, all models have at least one speaker in each door, with Tundra (Crew Max) or Sequoia models featuring a pair of rear speakers. To remove a door-mounted speaker, take off the door trim panel, remove retaining screws for the lower speaker, and disengage the three mounting clips for the upper speaker on Crew Max and Sequoia models. Disconnect the electrical connector and remove the speaker(s), with installation being the reverse of removal. For dash-mounted speakers, remove the A-pillar trim panel, pry up the speaker grille, take out the speaker retaining screws, unplug the electrical connector, and remove the speaker from the dash, with installation being the reverse of removal. For floor-mounted speakers in CrewMax models, remove the rear seats, then take off the back panel fasteners and pry the panel out, starting with the right side due to overlapping panels. Remove the speaker box retaining bolts, unplug the electrical connector, and take out the speakers, with installation being the reverse of removal. For rear seat entertainment in Sequoia models, use a plastic trim stick to disengage the four clips of the overhead light assembly, disconnect the electrical connector, and remove the assembly. Disengage the wiring harness retainer, disconnect the electrical connector to the video display assembly, and move the harness out of the way. Support the rear video display while removing the four mounting bolts, then disengage the retaining clips and remove the display assembly. If necessary, remove the video display assembly mounting bracket by taking off the four mounting bolts and disengaging the retaining clips. Installation is the reverse of removal, ensuring that the mounting bolts are tightened securely.