Component Description

WARNING: This page is about a different car, the 2012 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

BCM

Detects rear window defogger switch signal and transmits rear window defogger control signal to IPDM E/R.
Performs the timer control of rear window defogger.

IPDM E/R

Rear window defogger relay is installed.
Receives rear window defogger control signal from BCM and transmits rear window defogger control signal to AV control unit via CAM communication.
Controls rear window defogger relay to operate rear window defogger, door mirror defogger and wiper deicer relay⁽¹⁾.

Multifunction switch

The rear window defogger switch is installed.
Turns the indicator lamp ON when detecting the operation of rear window defogger.

AV control unit

Transmits rear window defogger switch signal to BCM via CAN communication.
Transmits rear window defogger feedback signal to multifunction switch.
Displays rear window defogger ON to the display when detecting the operation of rear window defogger

Rear window defogger

Heats the heating wire with the power supply from the rear window defogger relay to prevent the rear window from fogging up.

Door mirror defogger

Heats the heating wire with the power supply from the rear window defogger relay to prevent the door mirror from fogging up.

Wiper deicer⁽¹⁾

Heats the heating wire with the power supply from the wiper deicer relay to thaw the frozen wiper blade and glass.

Wiper deicer relay⁽¹⁾

Power is supplied to the wiper deicer with rear window defogger relay control.

⁽¹⁾	For models with wiper deicer