LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2008 >> IS F >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Pre-Collision >> Pre-Collision System >> Fail-Safe Chart
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Fail-Safe Chart

HINT:

The pre-collision system fail-safe function and details are indicated in the table below.

FAIL-SAFE CHART

Cause Warning Message Fail-safe Operation Conditions to Return to Normal Condition
A malfunction exists in part of pre-collision system "CHECK PCS SYSTEM" to "PCS NOT AVAILABLE NOW" Depending on malfunction part, pre-collision seat belt or brake assist system may stop operating(2) Repair malfunctioning part
Radiator grille or millimeter wave radar sensor is dirty "PCS NOT AVAILABLE NOW" Depending on dirty part, pre-collision seat belt or brake assist system may stop operating(2) Clean radiator grille or millimeter wave radar sensor
Pre-collision sensor cannot detect possible crash object because of bad weather, such as snow "PCS NOT AVAILABLE NOW" Depending on dirty part, pre-collision seat belt or brake assist system may stop operating(2) Sensor can detect an object
Overheating prevention function of seat belt control ECU operates(1) "PCS NOT AVAILABLE NOW" Pre-collision seat belt may stop operating Temperature of seat belt goes down, and seat belt control ECU becomes operative
(1) The overheating prevention function operates when the seat belt control ECU detects a rise in seat belt temperature because of excessive seat belt operation
(2) The pre-collision seat belts operate only with sudden braking.