Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Diagnosis System
DIAGNOSIS SYSTEM
FUNCTION OF WARNING INDICATOR AND MESSAGE
(a) If the pre-collision system is not functioning properly, the driver is warned by the PCS warning light and a warning message is displayed on the multi-information display.
| *a | PCS Warning Light |
| PCS warning light | Warning Message | Detail | DTC/RoB |
|---|---|---|---|
| Illuminates | "Pre-Collision System Malfunction Visit Your Dealer" | Pre-collision system malfunctioning | Stored |
| Illuminates | "Pre-Collision System Unavailable" |
| Stored |
| Illuminates | "Pre-Collision System Unavailable Clean Sensor" | Foreign matter attached to millimeter wave radar sensor assembly | Stored |
| Illuminates | "Front Camera Unavailable" |
| Stored |
| Illuminates | "Front Camera Unavailable See Owner's Manual" | Front of forward recognition camera or windshield glass is dirty or fogged | Stored |
| Illuminates | "VSC Turned Off Pre-Collision Brake System Unavailable" | VSC system is disabled | Not stored |
| PCS Warning Light | Condition |
|---|---|
| Illuminates | Pre-collision system malfunctioning (DTC stored) |
| Pre-collision system temporarily disabled | |
| Pre-collision system disabled | |
| VSC system disabled | |
| Not illuminated | Other |
INITIAL CHECK
(a) An initial check is performed when the engine switch is off for more than 2 seconds and then turned on (IG). The initial check consists of a pre-collision system diagnostic check with a duration of approximately 3 seconds.
(b) If a malfunction is detected during the initial check, the PCS warning light in the combination meter assembly will illuminate and a warning message indicating the pre-collision system is malfunctioning or disabled will be displayed on the multi-information display.
CONSTANT CHECK
(a) The forward recognition camera constantly monitors the pre-collision system for malfunctions after the engine switch is turned on (IG) and the initial check (approximately 3 seconds) has completed.
(b) If a malfunction is detected during the constant check, the PCS warning light in the combination meter assembly will illuminate and a warning message indicating the pre-collision system is malfunctioning or disabled will be displayed on the multi-information display.
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Inspect the fuses and relays related to this system before inspecting the suspected areas below. Pre-Collision System Symptom Suspected Area Link "VSC Turned OF ...
Terminals Of Ecu
TERMINALS OF ECU NOTICE:
DTCs may be output when connectors are disconnected during inspection. Therefore, be sure to clear the DTCs using the Techstream once the inspection has been completed.
D ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Lighting System: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE: Before replacing the main ECU (multiplex network body ECU), refer to Service Bulletin. HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probabi ...
Lexus RX (RX 350L, RX450h) 2016-2025 Owners Manual > For safe use: For safe driving
For safe driving, adjust the seat and mirror to an appropriate position
before
driving.
Correct driving posture
Adjust the angle of the seatback so
that you are sitting straight up and so
that you do not have to lean forward
to steer.
Adjust the seat so that you can
depress the pe ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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