To remove the antenna motor, first take off the antenna mast-retaining nut using snap-ring pliers or an antenna tool, and apply masking tape around the antenna mount to prevent paint scratches. Next, in the trunk, pry out the plastic clips that hold the passenger side trunk finishing panels to access the antenna motor. Detach the motor retaining screws, pull the antenna motor out, disconnect the electrical connector, and remove the motor from the vehicle. For installation, follow the reverse order of removal. To remove the antenna mast, at least two people are needed; one should control the ignition switch while the other holds the antenna mast. Remove the antenna mast-retaining nut, then with the ignition key and radio in the ON position, guide the antenna mast and toothed drive cable out of the motor assembly. When installing the new antenna mast, insert the antenna cable with the teeth facing the rear of the vehicle, and have your assistant turn the ignition key and radio to the ON position to wind the mast back into the motor assembly. The rest of the installation follows the reverse of removal. Most models feature a wire-grid antenna in the rear window alongside the mast antenna, while later models may only have the antenna grid. The antenna grid is located in the upper portion of the rear window, with the rear window defogger grid below it. Continuity testing of the antenna grid can be performed similarly to the rear defogger grid, and any breaks in the grid can be repaired in the same way.