Lexus ES: 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 becomes low, battery load control will operate in order to ensure sufficient power is supplied to the power steering system. In this case, the windshield deicer system may not operate.
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 DEICER relay. |
| DEICER Relay | 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 DEICER Relay and heats the windshield deicer wire (windshield glass). |
READ NEXT:
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
NEXT
Operation Check
OPERATION CHECK CHECK WINDSHIELD DEICER SYSTEM (a) Turn the engine switch on (IG). (b) Check that the windshield deicer wire (windshield glass) becomes warm by operating the front wiper deicer switch.
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE:
If the battery voltage becomes low, battery load control will operate in order to ensure sufficient power is supplied to the power steering system. In this case, the
SEE MORE:
Remote Engine Starter does not Operate
WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Before replacing the DCM (telematics transceiver), refer to Registration. Click here PROCEDURE 1. CHECK SMART KEY SYSTEM (for Start Function) (a) Check that the engine can be started by pressing the engine switch. Result Proceed to
Abnormal Noise is Heard from the Engine Compartment when Depressing the Brake Pedal
DESCRIPTION Troubleshooting for when abnormal sound occurs from the engine compartment due to air when the brake pedal is depressed. CAUTION / NOTICE / HINT NOTICE: After replacing the brake booster with master cylinder assembly, perform linear solenoid valve offset learning, ABS holding solenoid va
