Lexus RX III (2008-2012) headlight dimmer switch assembly Wiring diagrams

1 5 8 9 PNK WIRE 23 24 PNK CANH CANL WIRE 26 20 25 PNK IG WIRE AFS FUSE (ON LEFT SIDE OF ENGINE COMPT) AUTO TAIL BLK WIRE BLU WIRE BRN WIRE CANADA USA COMBINATION METER ASSEMBLY COMPUTER DATA INIT LINES SYSTEM COMPUTER DATA LINES SYSTEM D/L ALTB FUSE ECU- IG 1 FUSE ECU-ACC FUSE ECU-B 1 FUSE ECU-IG 1 3 FUSE ENGINE ROOM R/B ASSEMBLY FUSE GAUGE 2 FUSE GRN WIRE GRY WIRE HEAD HEAD CANL CANH COMPUTER DATA LINES SYSTEM HEADLIGHT DIMMER SWITCH ASSEMBLY HEADLIGHT SWIVEL ECU ASSEMBLY (LEFT END W/ DISPLAY W/O DISPLAY OF DASH) HID TYPE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INNER REAR VIEW MIRROR ASSEMBLY INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LEFT HEADLIGHT ASSEMBLY LH E LH- RH- SML LH+ LHM+ LIGHT CONTROL SWITCH LIN LT BLU WIRE LT GRN WIRE MAIN BODY ECU (BEHIND LEFT SIDE OF DASH) OFF DRL OFF ORG/ WIRE PNK WIRE RED WIRE RH E RHM + RIGHT HEADLIGHT ASSEMBLY RIGHT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY (AT RIGHT REAR SUSPENSION) SHB SHFL SBR SHRL SHG SHRR SMBL SMBR SMGL SMGL SMGR SMGR SML SMR SMR RH+ CANH CANL IGS IG SUSPENSION CONTROL ECU (RIGHT SIDE OF DASH) VIO WIRE W/ AIR SUSPENSION W/O AIR SUSPENSION WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 OUT 1 2 3 4 5 6 7 8 IG LR LL PNK WIRE 1 23 24 2 IG+ CANH CANL PNK WIRE 31 2 22 14 25 STPO AUTO BLK WIRE BLU WIRE BRN WIRE CANADA CANL CANH COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DRL OFF ECM (LEFT SIDE OF ENGINE COMPT) EL ER ENGINE ROOM GAUGE 2 FUSE GRN WIRE GRY WIRE HAZ FUSE HAZARD WARNING SIGNAL SWITCH ASSEMBLY HEAD HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES HOT IN ON OR START LEFT HEADLIGHT ASSEMBLY LIGHT CONTROL LT BLU WIRE LT GRN WIRE MARKER OFF PARKING PNK WIRE POWER MANAGEMENT CONTROL ECU (LEFT END OF DASH) RED WIRE RIGHT HEADLIGHT ASSEMBLY RIGHT OUTER MIRROR CONTROL ECU ASSEMBLY (IN RIGHT DOOR) RIGHT OUTER REAR VIEW MIRROR ASSEMBLY SIDE SIDE MARKER SKID CONTROL ECU W/ ACTUATOR ASSEMBLY (RIGHT REAR OF ENGINE COMPT) STOP FUSE R/B ASSEMBLY (LEFT FRONT FENDER APRON) STOP LIGHT CONTROL RELAY ASSEMBLY (LEFT END OF DASH) STP +B SWITCH SWITCH ASSEMBLY TAIL TOWING FUSE TRANSMISSION CONTROL ECU ASSEMBLY (LEFT FRONT OF ENGINE COMPT) TRN+ TRNI TURN TURN SIGNAL FLASHER SIGNAL ASSEMBLY (LEFT SIDE OF DASH) TURN SWITCH USA VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

10 9 8 7 6 5 4 3 2 1 TRNR AUTO BLK WIRE BLU WIRE BRN WIRE CANADA CTRS DRL OFF GRN WIRE GRY WIRE HAZARD WARNING SIGNAL SWITCH ASSEMBLY HEAD HEADLIGHT DIMMER SWITCH ASSEMBLY LEFT REAR LIGHT ASSEMBLY TAIL LH OFF LIGHT CONTROL LR CTLA CTLS CTLB LT BLU WIRE OFF ORG/ WIRE PNK WIRE RED WIRE RIGHT REAR LIGHT ASSEMBLY TAIL SWITCH TAIL TOWING CONVERTER (RIGHT SIDE OF LUGGAGE COMPT) TRAILER HITCH TTLA TTLS TTRS TURN SWITCH USA VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

BRN WIRE CERTIFICATION ECU ASSEMBLY CLEARANCE WARNING ECU ASSEMBLY COMBINATION METER ASSEMBLY CRANK POSITION SENSOR SHIELD FROM FUEL LID OPENER SWITCH GLOVE REMOTE BOX OPERATION LIGHT ASSEMBLY SWITCH HAZARD WARNING SIGNAL SWITCH ASSEMBLY HEADLIGHT DIMMER SWITCH ASSEMBLY HEADLIGHT DIMMER SWITCH ASSEMBLY POWER TILT MOTOR HEATER CONTROL PANEL (RADIO RECEIVER ASSEMBLY) HEIGHT CONTROL OFF SWITCH INTAKE MASS AIR FLOW METER SUB-ASSEMBLY SHIELD KNOCK CONTROL SENSOR (BANK 1, 2) SHIELD MAIN SWITCH ASSEMBLY MULTI DCM INFORMATION (TELEMATICS DISPLAY TRANSCEIVER) ASSEMBLY NCA WIRE OPTION CONNECTOR (REMOTE ENGINE STARTER) ORG/ WIRE OVERHEAD MODULE OXYGEN SENSOR (BANK 1 SENSOR 1) SHIELD OXYGEN SENSOR (BANK 1 SENSOR 2) SHIELD OXYGEN SENSOR (BANK 2 SENSOR 1) SHIELD OXYGEN SENSOR (BANK 2 SENSOR 2) SHIELD PARKING DOOR ASSIST CONTROL ECU SWITCH ASSEMBLY A/C AMPLIFIER ASSEMBLY POWER BACK DOOR MAIN SWITCH METER LIGHT MIRROR CONTROL SUB- RHEOSTAT ASSEMBLY RIGHT LEFT VISOR VISOR ASSEMBLY ASSEMBLY SATELLITE SWITCH SET SHIFT LOCK CONTROL ECU SUB-ASSEMBLY STEERING MAIN LOCK BODY ACTUATOR ECU ASSEMBLY STEERING SENSOR SUSPENSION CONTROL SWITCH THROTTLE W/ MOTOR BODY ASSEMBLY SHIELD TIRE PRESSURE WARNING RESET SWITCH VSC OFF SWITCH WATER TEMPERATURE SWITCH WHT WIRE WHT/BLK WIRE

1 2 3 4 5 6 HDLO 15 29 HRLY HEAD 2 1 PNK WIRE BLK WIRE BLK/ WHT WIRE BLU WIRE BRN WIRE ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) FRONT WASHER SWITCH FUSE H-LP CLN FUSE HDLO HEAD TAIL AUTO OFF (CANADA) DRL-OFF (USA) HEADLIGHT CLEANER CONTROL RELAY (BELOW RIGHT HEADLIGHT ASSEMBLY) HEADLIGHT CLEANER MOTOR, PUMP ASSEMBLY (BELOW RIGHT FRONT HEADLIGHT) HEADLIGHT CLEANER SWITCH ASSEMBLY HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES HOT IN ON OR START LIGHT SWITCH CONTROL LT BLU WIRE MAIN BODY ECU INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) PNK FRWA PB WIRE PNK WIRE RED WIRE VIO WIRE WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY

BLK WIRE BLU WIRE BRN WIRE CANN COMPUTER DATA LINES SYSTEM ECU-B 1 FUSE ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) FUSE GRN WIRE HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE MSW MULTIPLEX TILT, TELESCOPIC ECU (AT BASE OF STEERING COLUMN) ORG/ WIRE PNK WIRE POWER TILT MOTOR (ON STEERING COLUMN) RED WIRE TELESCO SHORT TELESCO STRETCH TELESCOPIC MOTOR TELESCOPIC SENSOR TEM+ TEM- TI, TE FUSE TILT DOWN TILT UP TILT, TELESCOPIC STRETCH TIM TIS VCE TES VCI WHT WIRE WHT/BLK WIRE YEL WIRE