SYSTEM DESCRIPTION GENERAL (a) The rear window defogger wire (back window glass) is attached to the inside of the rear window and defogs the window surface quickly when the rear window defogger switch is pressed. The indicator light on the switch illuminates while the system is operating. This system automatically turns off after approximately 15 minutes. NOTICE: If the auxiliary battery voltage becomes low, auxiliary battery load control will operate in order to ensure sufficient power is supplied to the power steering system. In this case, the window defogger system may not operate. HINT: The window defogger system is linked with the mirror heater function. FUNCTION OF MAIN COMPONENT
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Safety Connect System(for Hv Model): Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Safety Connect System DTC No. Detection Item Link B1536 Short in Telephone SUB Antenna Circuit B1537 Open in Telephone SUB Antenna Circuit B1570 Manual (SOS) Switch Red Indicator Malfunction B1571 Manual (SOS) Switch Green Indicator Malfunction B1572 Telephone Microphon ...
