Lexus NX: Problem Symptoms Table

Lexus NX Service Manual / Vehicle Exterior / Mirror (ext) / Power Mirror Control System (w/ Memory) / Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

NOTICE:

If the main body ECU (multiplex network body ECU) is replaced, refer to Registration.

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HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
If the auxiliary battery voltage becomes low, rear mirror heater operation is canceled to prioritize supplying power to the power steering system.
for Manual Tilt and Manual Telescopic Steering Column: Click here

for Power Tilt and Power Telescopic Steering Column: Click here

Power Mirror Control System

Symptom	Suspected Area	Link
Driver side power mirror cannot be adjusted with power mirror switch	Proceed to "Driver Side Power Mirror cannot be Adjusted with Power Mirror Switch"
Front passenger side power mirror cannot be adjusted with power mirror switch	Proceed to "Front Passenger Side Power Mirror cannot be Adjusted with Power Mirror Switch"
Power mirror cannot be adjusted with power mirror switch	Proceed to "Power Mirror cannot be Adjusted with Power Mirror Switch"
Mirror heater does not operate with rear defogger switch	Proceed to "Mirror Heater does not Operate with Rear Defogger Switch"
Mirror heater, rear window defogger and windshield deicer do not operate*	Power steering system (for Manual Tilt and Manual Telescopic Steering Column)
	Power steering system (for Power Tilt and Power Telescopic Steering Column)
Power retract mirrors do not operate with power retract mirror switch	Proceed to "Power Retract Mirrors do not Operate with Power Retract Mirror Switch"
AUTO power retract mirrors do not operate	Proceed to "AUTO Power Retract Mirrors do not operate"
Position memorization or recall of a memorized position is not possible	Proceed to "Power Mirror Surface Position is not Memorized"
Reverse shift-linked function of power mirrors does not operate	Proceed to "Reverse Shift-linked Function of Power Mirrors does not Operate"
Reverse shift-linked function of power mirrors does not return	Main body ECU (Multiplex network body ECU)
Driver side reverse shift-linked function of power mirrors does not return	Outer rear view mirror assembly LH
	Outer mirror control ECU assembly LH
Front passenger side reverse shift-linked function of power mirrors does not return	Outer rear view mirror assembly RH
	Outer mirror control ECU assembly RH
Memorization of the reverse shift-linked mirror position is not possible	Outer mirror control ECU assembly LH
	Outer mirror control ECU assembly RH
Wireless transmitter memory function does not operate	Smart access system with push-button start (for Entry Function)
	Power door lock control system
	Front power seat control system
	Main body ECU (Multiplex network body ECU)
Wireless-linked return function does not operate	Smart access system with push-button start (for Entry Function)
	Wireless door lock control system
	Front power seat control system
	Main body ECU (Multiplex network body ECU)
Automatic glare-resistant EC mirror does not operate	Inner rear view mirror assembly
	Outer mirror LH
	Outer mirror RH
	Outer mirror retractor LH
	Outer mirror retractor RH
	Outer mirror control ECU assembly LH
	Outer mirror control ECU assembly RH
	Harness or connector	-

*: w/ Windshield Deicer System

SEE MORE:

Reassembly

REASSEMBLY CAUTION / NOTICE / HINT NOTICE: Handle components indoors as much as possible to prevent foreign matter from entering and adhering to headlight assembly components. Do not reuse parts which have reduced fastening ability due to thread damage. When installing components, make sure t

Pattern Select Switch Eco Mode Circuit

DESCRIPTION When selecting ECO mode, the mode switch (integration control & panel assembly) operation signal is sent to the air conditioning amplifier assembly. Following this, ECO mode control is activated for the heater and air conditioning system. WIRING DIAGRAM PROCEDURE 1. READ VALUE

Lexus NX: Problem Symptoms Table

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Terminals Of Ecu

Data List / Active Test

Driver Side Power Mirror cannot be Adjusted with Power Mirror Switch

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Reassembly

Pattern Select Switch Eco Mode Circuit