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Home >> Lexus >> 2012 >> LS 460L AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 53 (Power Mirror Control System (Diagnostics & Symptom Tests)) >> Power Mirror Control System >> Symptom Tests >> Mirror Heater does not Operate with Rear Defogger Switch >> System Description

System Description

WARNING: This page is about a different car, the 2012 Lexus LS 460. However, it is still accessible from the selected car via links, so may be relevant.

The mirror heater operates when the following conditions are met: 1) the air conditioning amplifier sends a rear defogger switch signal through the CAN (can communication) line to the front door ECU LH and RH, and 2) the defogger operates.

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