2004 Mitsubishi Lancer EvolutionFACTORY OEM SERVICE PROCEDURE

Enabling/Disabling The Horn ANSWERBACK Function

WARNING: This page is about a different car, the 2004 Mitsubishi Eclipse. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the ignition key from ignition key cylinder.
  2. Push the transmitter "UNLOCK" switch while holding the "LOCK" switch pushed for four to ten seconds.
  3. If the transmitter "LOCK" switch and "UNLOCK" switch are released at the same time, the ETACS-ECU tone alarm will sound, indicating that the horn answerback function can be enabled or disabled.
  • Enable the horn answerback function: The ETACS-ECU tone alarm will sound once.Β 
  • Disable the horn answerback function: The ETACS-ECU tone alarm will sound twice.Β 
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.