Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Fail-Safe Chart
HINT:
The pre-collision system fail-safe function and details are indicated in the table below.
| 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 CURRENTLY AVAILABLE" | Depending on malfunction part, pre-collision seat belt or brake assist system may stop operating | Repair malfunctioning part |
| Radiator grille or millimeter wave radar sensor is dirty | "PCS NOT CURRENTLY AVAILABLE" | 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 objects because of bad weather, such as snow | "PCS NOT CURRENTLY AVAILABLE" | Depending on dirty part, pre-collision seat belt or brake assist system may stop operating*2 | Sensor can detect objects |
| Overheating prevention function of seat belt control ECU operates*1 | "PCS NOT CURRENTLY AVAILABLE" | 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 with sudden braking or it is determined that there is a high probability that the vehicle cannot be controlled.
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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.