Q: How to replace the Antenna Cable Sub-ASSY on 2003 Toyota Highlander?
A: Before starting the Antenna Cord Sub-ASSY replacement process you must disconnect the battery negative terminal while implementing safety precautions. First position the front wheels in a straight direction and remove the horn button assembly and steering wheel assembly by using Special Service Tool: 09950-50013 (09951-05010, 09952-05010, 09953-05020, 09954-05021). Next, remove the lower and upper steering column covers, headlamp dimmer switch assembly, windshield wiper switch assembly, instrument cluster finish panel sub-assembly center, control & panel assembly integration, instrument panel finish panel lower, instrument cluster finish panel assembly, instrument cluster finish panel garnish, combination meter assembly, instrument panel finish panel sub-assembly lower, instrument panel insert sub-assembly lower LH, instrument cluster finish panel assembly center, floor carpet cover center RH, floor carpet cover center LH, instrument panel finish panel lower center, glove compartment door assembly, and instrument panel finish panel lower No.2. The removal sequence requires disconnecting the passenger Air Bag connector followed by removing front pillar garnishes RH and LH, front door scuff plates RH and LH, cowl side trim sub-assemblies RH and LH, instrument panel safety pad sub-assembly, instrument cluster finish panel garnish No.2, automatic light control sensor, cooler (solar sensor) thermistor, defroster nozzle assembly, side defroster nozzle ducts No.1 and No.2, heater to register ducts No.1 and No.4, and heater to register center sub duct. Finishing the installation requires the removal of antenna cord sub-assembly clamps followed by installation of an instrument panel safety pad sub-assembly and spiral cable centering before adding the steering wheel assembly while checking for wheel centering and examining the horn button assembly before final installation of the SRS warning light.