When you're working with the hazard warning switch for Camry models, start by disconnecting the cable from the negative battery terminal, gently pry the registers loose in the center of the instrument panel, disconnect the electrical connector on the back of the switch, take out the screws, and detach the switch from the panel. Installation is just the opposite of removal. Pull the power mirror control switch out from the trim panel, then detach the electrical cable, and reverse these steps to reassemble. The control switch for the defroster and A/C must be replaced in its entirety. To replace the instrument panel lighting rheostat, first remove the driver's side trim panel. Next, carefully peel the switch away from its instrument panel position using a screwdriver blade taped to keep the surface scratch-free. Disconnect its electrical cord, then pull the switch out, following the same steps for putting it back. To get power outlets on cars with seat heaters, lift up and pull away the heater switch base to reach the power outlets. Then disconnect the electrical cable, push down the small locks, push the outlet back through the panel. Install the outlet by doing these actions in reverse order. To get to the engine switch on smart key models, carefully take out the driver's side trim panel, disconnect the engine switch wiring harness connectors, pull back the two metal clips, and pull the switch out of its control assembly. When it's time to put it back in, do all those steps in reverse order.