The vehicles feature a wire grid-type antenna attached to the rear window glass. If radio reception issues arise, assess the antenna wires by checking for continuity using an ohmmeter. Wrap aluminum foil around your ohmmeter probes' tips and touch them to the antenna grid wires. Starting with one probe at an antenna terminal, move the other along the wire to detect continuity until a break is identified. If a break is found, the wire can be fixed in the same way as a rear window defogger wire.