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Home >> Lexus >> 2018 >> GX 460 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System / Washer System (With Rain Sensor) (Diagnostics & Circuit Tests) >> WIPER AND WASHER SYSTEM (w/ Rain Sensor) >> Problem Symptoms Table [08/2015 - 08/2019] >> Problem Symptoms Table [08/2015 - 08/2019]
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Problem Symptoms Table [08/2015 - 08/2019]

HINT: 

FRONT WIPER AND WASHER

Symptom Suspected Area Refer To
Front wipers do not operate at all Windshield wiper switch assembly Refer to INSPECTION [08/2015 - 08/2019]
Harness or connector -
Front wipers do not operate in AUTO LIN communication system Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 08/2019]
Rain sensor Refer to OPERATION CHECK [08/2015 - ] 
Map light assembly Refer to INSPECTION [08/2015 - ]
Windshield wiper motor assembly Refer to INSPECTION [08/2015 - ]
Windshield wiper switch assembly Refer to INSPECTION [08/2015 - 08/2019]
Harness or connector -
Front wiper system does not operate Windshield wiper motor assembly Refer to INSPECTION [08/2015 - ]
Windshield wiper switch assembly Refer to INSPECTION [08/2015 - 08/2019]
Harness or connector -
Front washer system does not operate Windshield washer motor and pump assembly Refer to INSTALLATION [08/2015 - 08/2019]
Windshield wiper switch assembly Refer to INSPECTION [08/2015 - 08/2019]
Harness or connector -
Front wipers do not operate when front washer switch is on Windshield wiper motor assembly Refer to INSPECTION [08/2015 - ]
Windshield wiper switch assembly Refer to INSPECTION [08/2015 - 08/2019]
Harness or connector -
When front wiper switch is off, wiper blades do not park or park in wrong position Front wiper arm installation position -
Windshield wiper motor assembly Refer to INSPECTION [08/2015 - ]
REAR WIPER AND WASHER

Symptom Suspected Area Refer To
Rear wiper and washer system does not operate Windshield wiper switch assembly Refer to INSPECTION [08/2015 - 08/2019]
Harness or connector -
Rear wiper system does not operate Proceed to "Rear Wiper does not Operate" Refer to Rear Wiper does not Operate [08/2015 - 08/2019] 
Rear washer system does not operate Rear washer motor and pump assembly Refer to INSPECTION [08/2015 - ]
Windshield wiper switch assembly Refer to INSPECTION [08/2015 - 08/2019]
Harness or connector -
Rear wiper arm does not return to its original position when wiper switch is turned off Rear wiper motor assembly Refer to INSPECTION [08/2015 - ]
Harness or connector -
HEADLIGHT CLEANER SYSTEM (W/ HEADLIGHT CLEANER SYSTEM)

Symptom Suspected Area Refer To
Headlight cleaner system does not operate when headlight cleaner switch is operated Proceed to "Headlight Cleaner Motor and Relay Circuit" Refer to Headlight Cleaner Motor and Relay Circuit [08/2015 - 08/2019] 
Proceed to "Headlight Cleaner Switch Circuit" Refer to Headlight Cleaner Switch Circuit [08/2015 - 08/2019] 
Headlight cleaner control relay -
Main body ECU (Multiplex network body ECU) -
Headlight cleaner system does not operate when headlight cleaner switch is operated* Proceed to "Headlight Cleaner Motor and Relay Circuit" Refer to Headlight Cleaner Motor and Relay Circuit [08/2015 - 08/2019] 
Proceed to "Washer Signal Circuit" Refer to Washer Signal Circuit [08/2015 - 08/2019] 
Proceed to "Headlight Signal Circuit" Refer to Headlight Signal Circuit [08/2015 - 08/2019] 
Headlight cleaner control relay -
  1. *: The headlight cleaner system operates when the windshield wiper switch (front washer switch) is first operated with the low beam headlights on after the engine switch is turned on (IG).
OTHER

Symptom Suspected Area Refer To
Washer fluid level warning system does not operate Proceed to "Washer Fluid Level Warning Switch Circuit" Refer to Washer Fluid Level Warning Switch Circuit [08/2015 - 08/2019] 
Combination meter assembly Refer to REMOVAL [08/2015 - 08/2019]