Window Defogger System - Repair
Clean the broken wire tips with a grease, wax and silicone remover.
Window Defogger System - On-Vehicle Inspection
When the engine switch is turned on (IG) and the defogger switch is pressed, check that the rear window defogger operates.
Window Defogger System - Data List / Active Test
Connect the intelligent tester (with CAN VIM) to the DLC3.
Window Defogger System - Diagnosis System
The defogger system data can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the intelligent tester to check for malfunctions and perform repairs.
Window Defogger System - Terminals Of Ecu
Measure the voltage and resistance of each terminal of the connectors.
Window Defogger System - Problem Symptoms Table
Lexus IS250 IS220d GSE20 ALE20 WINDSHIELD / WINDOWGLASS
Window Defogger System - How To Proceed With Troubleshooting
If the voltage is below 11 V, recharge or replace the battery before proceeding.
Window Defogger System - System Description
The defogger system's thin heater wires are attached to the inside of the rear window and defog the window surface quickly. The indicator light illuminates while the system is operating. The system automatically turns off after approximately 15 minutes.
Window Defogger System - System Diagram
Lexus IS250 IS220d GSE20 ALE20 WINDSHIELD / WINDOWGLASS
Window Defogger System - Parts Location
Lexus IS250 IS220d GSE20 ALE20 WINDSHIELD / WINDOWGLASS