Lexus NX: Parts Location

PARTS LOCATION

ILLUSTRATION

*A

w/ Rear Seat Heater

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*1

AIR CONDITIONING CONTROL ASSEMBLY

*2

SEAT HEATER SWITCH (for Driver Side)

*3

SEAT HEATER SWITCH (for Front Passenger Side)

*4

NO. 3 RELAY BLOCK

  • - RR S-HTR RELAY (w/ Rear Seat Heater)

*5

REFRESHING SEAT SWITCH

*6

AIR CONDITIONING AMPLIFIER ASSEMBLY

*7

DLC3

*8

INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

  • - S/HTR F/L FUSE
  • - ECU-IG NO.1 FUSE
  • - ECU-IG NO.2 FUSE (w/ Rear Seat Heater)

*9

COMBINATION METER ASSEMBLY

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ILLUSTRATION

*1

SEPARATE TYPE FRONT SEAT CUSHION COVER RH

*2

SEPARATE TYPE FRONT SEAT CUSHION COVER LH

*3

SEPARATE TYPE FRONT SEATBACK COVER LH

*4

SEPARATE TYPE FRONT SEATBACK COVER RH

*5

SEAT HEATER CONTROL SUB-ASSEMBLY RH

*6

SEAT HEATER CONTROL SUB-ASSEMBLY LH

ILLUSTRATION

*A

w/ Rear Seat Heater

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-

*1

BENCH TYPE REAR SEAT CUSHION COVER

*2

SEPARATE TYPE REAR SEATBACK COVER LH

*3

SEPARATE TYPE REAR SEATBACK COVER RH

*4

SEAT HEATER CONTROL SUB-ASSEMBLY RH

*5

SEAT HEATER CONTROL SUB-ASSEMBLY LH

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ILLUSTRATION

*1

NO. 2 ENGINE ROOM RELAY BLOCK

  • - S/HTR F/R FUSE
  • - ECU-B NO.2 FUSE

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READ NEXT:

 System Diagram

SYSTEM DIAGRAM for Front: for Rear (w/ Rear Seat Heater):

 System Description

SYSTEM DESCRIPTION FRONT SEAT HEATER (a) By operating the seat heater switch on the air conditioning control assembly, the temperature can be controlled within the range of 32 to 43°C (89 to 109°F).

 How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: Use the following procedure to troubleshoot the seat heater system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT

SEE MORE:

 Installation

INSTALLATION PROCEDURE 1. INSTALL CONSOLE BOX ILLUMINATION LIGHT ASSEMBLY (w/ Wireless Charger) (a) Attach the 2 claws to install the console box illumination light assembly. (b) Connect the connector. 2. INSTALL REAR CONSOLE END PANEL SUB-ASSEMBLY (w/ Wireless Charger) Click here

 ECM Power Source Circuit

DESCRIPTION When the power switch is turned on (IG), auxiliary battery voltage is applied to the IGSW terminal of the ECM. The output signal from the MREL terminal of the ECM causes current to flow to the coil of the EFI-MAIN relay, closing the contacts of the EFI-MAIN relay and supplying power to t

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