You can access the bulb from the trunk area (from behind). Just remove and replace, should be straightforward.
How do you remove taillight cover on a T-100 toyota Truck
you dont
take it to the Toyota dealership and ask them to replace it
To replace the right taillight assembly on a 2012 Toyota Highlander, first, open the rear hatch and locate the access panel on the inside of the cargo area. Remove the panel to expose the taillight assembly screws, then unscrew and disconnect the wiring harness from the old taillight. Replace it with the new assembly by reconnecting the wiring harness and securing it with the screws, then replace the access panel. Finally, test the new taillight to ensure it’s functioning properly.
Pretty sure its the same as the 2000 Toyota echo, see related link.
when it breaks
about $1500 AU
$1500 to $2000
You can replace your 2003 Toyota Echo antenna. Remove the antenna retaining nut. Remove the cable from the bottom of the antenna. Reverse the process to install the new antenna.
$250-300
go to dealer
To replace the rear bulb in a Toyota 4Runner remove the plastic covers located in the trunk. Taking off the plastic covers will reveal the taillight housing and bulbs. Replace the bulbs.