2005 Lexus LS 430FACTORY OEM SERVICE PROCEDURE

Problem Symptoms Table

HINT:

If a normal system code is displayed during the DTC check but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting page.

PROBLEM SYMPTOMS TABLE - PRE-COLLISION SAFETY SYSTEM

Symptom Suspected Area
System operates even when there is not possibility of a collision.
  • 3. Check the installation condition of the millimeter wave radar sensor.
  • 4. The cruise control ECU assy (distance control ECU) may detect possible collision objects, and the system may activate even when the vehicle does not collide with the object.
System does not operate even when there is the possibility of a collision.
  1. Check the installation condition of the millimeter wave radar sensor.
  2. Check if the inoperative conditions of the system are met.
  3. As this system operates when the cruise control ECU assy (distance control ECU) determines that a collision is unavoidable, the system may not have any malfunction.
"PCS not Available Now" is displayed on the multi-information display.
  1. Radiator grille for millimeter wave radar sensor is not clean.
  2. Millimeter wave radar sensor can not detect possible collision objects because of bad weather.
  3. Overheating prevention function of the seat belt control ECU operates.
  • Neither the normal system code nor DTC is output.
  • System does not operate normally even when the normal system code in output and DTCs are not output.
  1. Power source circuit
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

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

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

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.