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Problem Symptoms Table

WARNING: This page is about a different car, the 2004 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
PROBLEM SYMPTOMS TABLE - WIRELESS DOOR LOCK CONTROL SYSTEM

Problem Symptom Suspected Area
Wireless door lock tuner circuit.
  1. Inner rear view mirror assy (door control receiver)
  2. Wire harness
  3. Theft warning ECU
Only wireless control function is inoperative.
  1. Inner rear view mirror assy (door control receiver)
  2. Transmitter battery
  3. Transmitter module set
  4. Wire harness
  5. Theft warning ECU
Buzzer control circuit.
  1. Wireless door lock buzzer
  2. Wire harness
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