Problem Symptoms Table

WARNING: This page is about a different car, the 2004 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

PROBLEM SYMPTOMS CHART

Symptom	Suspected Area	See
Rear sunshade does not operate in manual operation.	RR S/SHADE Relay Rear sunshade switch (Front side) Rear sunshade switch (Rear side) Luggage room J/B ECU Rear sunshade Rear sunshade control relay Wire harness	INSPECTION INSPECTION INSPECTION INSPECTION INSPECTION - -
Rear sunshade does not operate automatically only when shift lever is moved into R position.	Luggage room J/B ECU Rear sunshade control relay Wire harness	INSPECTION - -

HINT:

The rear sunshade system is part of the large-scale multiplex communication system. This system features shared communication wiring that reduces the wiring complexity of the communication lines. The first step in any repair is to confirm the proper operation of the communication system. Proceed with troubleshooting after the communication has been verified (See Multiplex Communication System).