Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Stop Light Relay Actuator Stuck (C142571)
DESCRIPTION
The skid control ECU (brake actuator assembly) sends a stop light operation request signal to the stop light relay (semiconductor PWR integration ECU). If the skid control ECU (brake actuator assembly) detects a malfunction in the stop light relay (semiconductor PWR integration ECU) circuit, the forward recognition camera stores this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C142571 | Stop Light Relay Actuator Stuck | 3 seconds or more after the engine switch is turned on (IG), the forward recognition camera receives a stop light relay circuit malfunction signal from the skid control ECU (brake actuator assembly) for approximately 1 second or more. | Vehicle stability control system |
PROCEDURE
| 1. | GO TO VEHICLE STABILITY CONTROL SYSTEM |
HINT:
If DTC C142571 is output by the pre-collision system, perform troubleshooting for the vehicle stability control system.
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Vehicle Control History
VEHICLE CONTROL HISTORY NOTICE: Make sure to record any output Vehicle Control History codes before clearing them and checking the Vehicle Control History again. CHECK VEHICLE CONTROL HISTORY (PRE-COL ...
Lost Communication with ECM/PCM "A" Missing Message (U010087,U012587,U012687,U012987)
DESCRIPTION When a malfunction is detected between various ECUs and sensors, these DTCs are stored. DTC No. Detection Item DTC Detection Condition Trouble Area U010087 Lost Communicatio ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Integration Relay: On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT SEMICONDUCTOR POWER INTEGRATION ECU (SIGNAL READING CHECK) NOTICE: Both present and history signal readings will be cleared if the semiconductor power integration ECU is removed. Make sure not to remove it before inspection. HINT: The signal readings of the ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Charging System: Lost Communication with Alternator Missing Message (P161A87)
DESCRIPTION The ECM communicates with the generator assembly via LIN communication. If a LIN communication error is detected, the ECM stores this DTC. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory Note P161A87 Lost Communication with Alterna ...
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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