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2005 TOYOTA ECHO
1.5L I4•FWD•AUTOMATIC•gas•1NZ-FE
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Repairs0Labor489Torque4190Fluid7DTC1073Battery1Maintenance0Recalls0
B0113low severityBody

Passive Entry System Malfunction

on 2005 Toyota Echo 1.5L I4 · FWD

What this code means

The passive/smart entry system that detects key fob proximity for hands-free entry is not functioning.

Symptoms

  • Must press key fob button to unlock
  • Touch-to-unlock door handles not working
  • Passive entry indicator not responding
  • Walk-away lock not working

Common causes

  • Low-frequency antenna failure
  • Key fob passive entry circuit fault
  • Door handle sensor failure
  • BCM passive entry module issue
  • Key fob battery too weak for passive mode

Diagnostic steps

  1. Check key fob battery voltage
  2. Test LF antenna at each door handle
  3. Scan BCM for passive entry codes
  4. Test door handle touch sensors
  5. Verify passive entry is enabled in settings

Repair notes

Replace LF antenna, key fob, or door handle antenna module. Check BCM configuration.

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