Rear Acceleration Sensor: Removal

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
REMOVE REAR ACCELERATION SENSOR ASSEMBLY
1. Fold back the upper part of the luggage compartment trim cover inner.
2. Disconnect the sensor connector.
3. Remove the bolt and sensor.
  
  Fig 1: Locating Rear Acceleration Sensor Nut
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE REAR ACCELERATION SENSOR
1. Remove the nut and sensor from the bracket.
  
  Fig 2: Locating Rear Acceleration Sensor Bracket Nut
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002