Q: How to service the antenna cable on 2006 Scion tC?
A: Service the antenna cable by disconnecting it from the negative battery terminal before waiting for at least 90 seconds to avoid activating Air Bag and seat belt pretensioners. Proceed by removing the tonneau cover assembly, deck board sub-assembly, back door scuff plate, deck floor boxes (LH and RH), rope hook assembly, rear No.1 floor board, seat track bracket covers (outer and inner RH), front seat assembly RH, rear seat cushion assembly, rear seatback assembly RH, lap belt outer anchor cover, front seat outer belt assembly RH, front door scuff plate RH, luggage compartment trim hooks (No.1 and No.2), side trim assembly RH, deck trim side panel assembly RH, shift lever knob sub-assembly (for Manual Transaxle), upper console panel, console upper rear panel sub-assembly, console box rear assembly, and instrument cluster finish panel assembly. Remove the antenna cord sub-assembly through the process of bolt disassembly and complete clamp detachment. For installation, attach all clamps and install the antenna cord sub-assembly with the bolt, followed by the instrument cluster finish panel assembly, rear console box assembly, console upper rear panel sub-assembly, upper console panel, shift lever knob sub-assembly (for Manual Transaxle), deck trim side panel assembly RH, luggage compartment trim hooks (No.2 and No.1), side trim assembly RH, front door scuff plate RH, front seat outer belt assembly RH, lap belt outer anchor cover, rear seatback assembly RH, rear seat cushion assembly, front seat assembly, seat track bracket covers (inner and outer RH), rear No.1 floor board, rope hook assembly, deck floor boxes (RH and LH), back door scuff plate, deck board sub-assembly, and finally connect the cable to the negative battery terminal. Running initialization becomes necessary because some systems need system reset after removing and reconnecting the cable fastened to the negative battery post.