Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: System Description
SYSTEM DESCRIPTION
GENERAL
The windshield deicer system uses thin heater wires attached to the inside of the windshield glass to help deice the window surface more quickly. An indicator light illuminates while the system is operating. This system automatically turns off after approximately 15 minutes.
NOTICE:
If the battery voltage is low, the windshield deicer system may not operate. When "Operation of Electrical Items Restricted." is not displayed on the multi-information display in the combination meter assembly, check the Data List item "Battery Control Count (Body ECU)".
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FUNCTION OF MAIN COMPONENT
| Component | Outline |
|---|---|
| Front Wiper Deicer Switch (Multi Display Assembly) | Sends signals to the air conditioning amplifier assembly to operate the windshield deicer system. |
| Air Conditioning Amplifier Assembly | Sends windshield deicer activation request signals to the semiconductor pwr integration ECU. |
| Semiconductor Pwr Integration ECU | Receives windshield deicer activation request signals from the air conditioning amplifier assembly and supplies power to the windshield deicer wire (windshield glass). |
| Windshield Deicer Wire (Windshield Glass) | Receives power from the semiconductor pwr integration ECU and heats the windshield deicer wire (windshield glass). |
System Diagram
SYSTEM DIAGRAM Sender Receiver Signal Communication Method Radio Receiver Assembly Air Conditioning Amplifier Assembly Front wiper deicer switch signal CAN ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the windshield deicer system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
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Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Combination Meter: Removal
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during combination meter assembly removal/installation are shown below. Necessary Procedures After Parts Remove ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Vehicle Stability Control System: ABS Pump Motor Actuator Stuck (C142771)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area C142771 ABS Pump Motor Actuator Stuck Actuator pump motor does not operate properly.
Wire harness and connector
Brake actuator assembly (Pump motor)
Brake actuator assembly (Pump motor circuit)
WI ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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